sync: Refactor to use _RunOneGC and fix config leakage

Extract _RunOneGC to handle GC on a single project. This refactoring
makes it easier to invoke GC from parallel worker tasks.

Also, avoid modifying the passed-in config dictionary in _RunOneGC by
creating a local copy, preventing unintended side effects on other
commands sharing the same config.

Bug: 498290329
Change-Id: I7b77ed6629b14b5ee3322870b9c6c8ce2bfd6ea2
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/574923
Reviewed-by: Becky Siegel <beckysiegel@google.com>
Tested-by: Gavin Mak <gavinmak@google.com>
Commit-Queue: Gavin Mak <gavinmak@google.com>

.flake8

@@ -12,5 +12,6 @@ extend-ignore =
     # E731: do not assign a lambda expression, use a def
     E731,
 exclude =
+    .venv,
     venv,
     .tox,

.github/workflows/black.yml

@@ -0,0 +1,16 @@
+# GitHub actions workflow.
+# https://help.github.com/en/actions/automating-your-workflow-with-github-actions/workflow-syntax-for-github-actions
+# https://black.readthedocs.io/en/stable/integrations/github_actions.html
+
+name: Format
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: psf/black@stable

.github/workflows/close-pull-request.yml

@@ -18,5 +18,5 @@ jobs:
           Thanks for your contribution!
           Unfortunately, we don't use GitHub pull requests to manage code
           contributions to this repository.
-          Instead, please see [README.md](../blob/HEAD/SUBMITTING_PATCHES.md)
+          Instead, please see [README.md](../blob/HEAD/CONTRIBUTING.md)
           which provides full instructions on how to get involved.

.github/workflows/test-ci.yml

@@ -27,6 +27,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install tox tox-gh-actions
+        python -m pip install pytest
-    - name: Test with tox
+    - name: Run tests
-      run: tox
+      run: python -m pytest

.isort.cfg

@@ -1,41 +0,0 @@
-# Copyright 2023 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Config file for the isort python module.
-# This is used to enforce import sorting standards.
-#
-# https://pycqa.github.io/isort/docs/configuration/options.html
-
-[settings]
-# Be compatible with `black` since it also matches what we want.
-profile = black
-
-line_length = 80
-length_sort = false
-force_single_line = true
-lines_after_imports = 2
-from_first = false
-case_sensitive = false
-force_sort_within_sections = true
-order_by_type = false
-
-# Ignore generated files.
-extend_skip_glob = *_pb2.py
-
-# Allow importing multiple classes on a single line from these modules.
-# https://google.github.io/styleguide/pyguide#s2.2-imports
-single_line_exclusions =
-    abc,
-    collections.abc,
-    typing,

.pydevproject

@@ -5,6 +5,5 @@
 <pydev_pathproperty name="org.python.pydev.PROJECT_SOURCE_PATH">
 <path>/git-repo</path>
 </pydev_pathproperty>
-<pydev_property name="org.python.pydev.PYTHON_PROJECT_VERSION">python 2.7</pydev_property>
 <pydev_property name="org.python.pydev.PYTHON_PROJECT_INTERPRETER">Default</pydev_property>
 </pydev_project>

CONTRIBUTING.md

@@ -43,17 +43,12 @@ probably need to split up your commit to finer grained pieces.
 
 Lint any changes by running:
 ```sh
-$ tox -e lint -- file.py
+$ flake8
 ```
 
 And format with:
 ```sh
-$ tox -e format -- file.py
+$ black file.py
-```
-
-Or format everything:
-```sh
-$ tox -e format
 ```
 
 Repo uses [black](https://black.readthedocs.io/) with line length of 80 as its
@@ -73,15 +68,11 @@ the entire project in the included `.flake8` file.
 [PEP 8]: https://www.python.org/dev/peps/pep-0008/
 [flake8 documentation]: https://flake8.pycqa.org/en/3.1.1/user/ignoring-errors.html#in-line-ignoring-errors
 
+
 ## Running tests
 
-We use [pytest](https://pytest.org/) and [tox](https://tox.readthedocs.io/) for
+We use [pytest](https://pytest.org/) for running tests.  You should make sure to
-running tests.  You should make sure to install those first.
+install that first.
-
-To run the full suite against all supported Python versions, simply execute:
-```sh
-$ tox -p auto
-```
 
 We have [`./run_tests`](./run_tests) which is a simple wrapper around `pytest`:
 ```sh
@@ -143,7 +134,7 @@ they have right to redistribute your work under the Apache License:
 
 Ensure you have obtained an HTTP password to authenticate:
 
-  https://gerrit-review.googlesource.com/new-password
+  https://www.googlesource.com/new-password
 
 Ensure that you have the local commit hook installed to automatically
 add a ChangeId to your commits:

README.md

@@ -14,7 +14,7 @@ that you can put anywhere in your path.
 * Docs: <https://source.android.com/source/using-repo.html>
 * [repo Manifest Format](./docs/manifest-format.md)
 * [repo Hooks](./docs/repo-hooks.md)
-* [Submitting patches](./SUBMITTING_PATCHES.md)
+* [Contributing](./CONTRIBUTING.md)
 * Running Repo in [Microsoft Windows](./docs/windows.md)
 * GitHub mirror: <https://github.com/GerritCodeReview/git-repo>
 * Postsubmit tests: <https://github.com/GerritCodeReview/git-repo/actions>

color.py

@@ -210,6 +210,7 @@ class Coloring:
                 if have_fg:
                     bg = a
                 else:
+                    have_fg = True
                     fg = a
             elif is_attr(a):
                 attr = a

command.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import contextlib
 import multiprocessing
 import optparse
 import os
@@ -70,6 +71,14 @@ class Command:
     # migrated subcommands can set it to False.
     MULTI_MANIFEST_SUPPORT = True
 
+    # Shared data across parallel execution workers.
+    _parallel_context = None
+
+    @classmethod
+    def get_parallel_context(cls):
+        assert cls._parallel_context is not None
+        return cls._parallel_context
+
     def __init__(
         self,
         repodir=None,
@@ -242,9 +251,39 @@ class Command:
         """Perform the action, after option parsing is complete."""
         raise NotImplementedError
 
-    @staticmethod
+    @classmethod
+    @contextlib.contextmanager
+    def ParallelContext(cls):
+        """Obtains the context, which is shared to ExecuteInParallel workers.
+
+        Callers can store data in the context dict before invocation of
+        ExecuteInParallel. The dict will then be shared to child workers of
+        ExecuteInParallel.
+        """
+        assert cls._parallel_context is None
+        cls._parallel_context = {}
+        try:
+            yield
+        finally:
+            cls._parallel_context = None
+
+    @classmethod
+    def _InitParallelWorker(cls, context, initializer):
+        cls._parallel_context = context
+        if initializer:
+            initializer()
+
+    @classmethod
     def ExecuteInParallel(
-        jobs, func, inputs, callback, output=None, ordered=False
+        cls,
+        jobs,
+        func,
+        inputs,
+        callback,
+        output=None,
+        ordered=False,
+        chunksize=WORKER_BATCH_SIZE,
+        initializer=None,
     ):
         """Helper for managing parallel execution boiler plate.
 
@@ -269,6 +308,9 @@ class Command:
             output: An output manager. May be progress.Progess or
                 color.Coloring.
             ordered: Whether the jobs should be processed in order.
+            chunksize: The number of jobs processed in batch by parallel
+                workers.
+            initializer: Worker initializer.
 
         Returns:
             The |callback| function's results are returned.
@@ -278,12 +320,16 @@ class Command:
             if len(inputs) == 1 or jobs == 1:
                 return callback(None, output, (func(x) for x in inputs))
             else:
-                with multiprocessing.Pool(jobs) as pool:
+                with multiprocessing.Pool(
+                    jobs,
+                    initializer=cls._InitParallelWorker,
+                    initargs=(cls._parallel_context, initializer),
+                ) as pool:
                     submit = pool.imap if ordered else pool.imap_unordered
                     return callback(
                         pool,
                         output,
-                        submit(func, inputs, chunksize=WORKER_BATCH_SIZE),
+                        submit(func, inputs, chunksize=chunksize),
                     )
         finally:
             if isinstance(output, progress.Progress):
@@ -353,7 +399,7 @@ class Command:
         result = []
 
         if not groups:
-            groups = manifest.GetGroupsStr()
+            groups = manifest.GetManifestGroupsStr()
         groups = [x for x in re.split(r"[,\s]+", groups) if x]
 
         if not args:
@@ -501,7 +547,3 @@ class MirrorSafeCommand:
     """Command permits itself to run within a mirror, and does not require a
     working directory.
     """
-
-
-class GitcClientCommand:
-    """Command that requires the local client to be a GITC client."""

completion.bash

@@ -1,4 +1,4 @@
-# Copyright 2021 The Android Open Source Project
+# Copyright (C) 2021 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

constraints.txt

@@ -0,0 +1,2 @@
+# NB: Keep in sync with run_tests.vpython3.
+black<26

docs/internal-fs-layout.md

@@ -141,7 +141,7 @@ Instead, you should use standard Git workflows like [git worktree] or
     (e.g. a local mirror & a public review server) while avoiding duplicating
     the content.  However, this can run into problems if different remotes use
     the same path on their respective servers.  Best to avoid that.
-*   `subprojects/`: Like `projects/`, but for git submodules.
+*   `modules/`: Like `projects/`, but for git submodules.
 *   `subproject-objects/`: Like `project-objects/`, but for git submodules.
 *   `worktrees/`: Bare checkouts of every project synced by the manifest.  The
     filesystem layout matches the `<project name=...` setting in the manifest

docs/manifest-format.md

@@ -51,6 +51,7 @@ following DTD:
   <!ATTLIST default dest-branch CDATA #IMPLIED>
   <!ATTLIST default upstream    CDATA #IMPLIED>
   <!ATTLIST default sync-j      CDATA #IMPLIED>
+  <!ATTLIST default sync-j-max  CDATA #IMPLIED>
   <!ATTLIST default sync-c      CDATA #IMPLIED>
   <!ATTLIST default sync-s      CDATA #IMPLIED>
   <!ATTLIST default sync-tags   CDATA #IMPLIED>
@@ -59,7 +60,7 @@ following DTD:
   <!ATTLIST manifest-server url CDATA #REQUIRED>
 
   <!ELEMENT submanifest EMPTY>
-  <!ATTLIST submanifest name           ID #REQUIRED>
+  <!ATTLIST submanifest name           ID    #REQUIRED>
   <!ATTLIST submanifest remote         IDREF #IMPLIED>
   <!ATTLIST submanifest project        CDATA #IMPLIED>
   <!ATTLIST submanifest manifest-name  CDATA #IMPLIED>
@@ -72,18 +73,19 @@ following DTD:
                      project*,
                      copyfile*,
                      linkfile*)>
-  <!ATTLIST project name        CDATA #REQUIRED>
+  <!ATTLIST project name          CDATA #REQUIRED>
-  <!ATTLIST project path        CDATA #IMPLIED>
+  <!ATTLIST project path          CDATA #IMPLIED>
-  <!ATTLIST project remote      IDREF #IMPLIED>
+  <!ATTLIST project remote        IDREF #IMPLIED>
-  <!ATTLIST project revision    CDATA #IMPLIED>
+  <!ATTLIST project revision      CDATA #IMPLIED>
-  <!ATTLIST project dest-branch CDATA #IMPLIED>
+  <!ATTLIST project dest-branch   CDATA #IMPLIED>
-  <!ATTLIST project groups      CDATA #IMPLIED>
+  <!ATTLIST project groups        CDATA #IMPLIED>
-  <!ATTLIST project sync-c      CDATA #IMPLIED>
+  <!ATTLIST project sync-c        CDATA #IMPLIED>
-  <!ATTLIST project sync-s      CDATA #IMPLIED>
+  <!ATTLIST project sync-s        CDATA #IMPLIED>
-  <!ATTLIST project sync-tags   CDATA #IMPLIED>
+  <!ATTLIST project sync-tags     CDATA #IMPLIED>
-  <!ATTLIST project upstream CDATA #IMPLIED>
+  <!ATTLIST project upstream      CDATA #IMPLIED>
-  <!ATTLIST project clone-depth CDATA #IMPLIED>
+  <!ATTLIST project clone-depth   CDATA #IMPLIED>
-  <!ATTLIST project force-path CDATA #IMPLIED>
+  <!ATTLIST project force-path    CDATA #IMPLIED>
+  <!ATTLIST project sync-strategy CDATA #IMPLIED>
 
   <!ELEMENT annotation EMPTY>
   <!ATTLIST annotation name  CDATA #REQUIRED>
@@ -95,26 +97,30 @@ following DTD:
   <!ATTLIST copyfile dest CDATA #REQUIRED>
 
   <!ELEMENT linkfile EMPTY>
-  <!ATTLIST linkfile src CDATA #REQUIRED>
+  <!ATTLIST linkfile src  CDATA #REQUIRED>
   <!ATTLIST linkfile dest CDATA #REQUIRED>
 
-  <!ELEMENT extend-project EMPTY>
+  <!ELEMENT extend-project (annotation*,
-  <!ATTLIST extend-project name CDATA #REQUIRED>
+                            copyfile*,
-  <!ATTLIST extend-project path CDATA #IMPLIED>
+                            linkfile*)>
-  <!ATTLIST extend-project dest-path CDATA #IMPLIED>
+  <!ATTLIST extend-project name        CDATA #REQUIRED>
-  <!ATTLIST extend-project groups CDATA #IMPLIED>
+  <!ATTLIST extend-project path        CDATA #IMPLIED>
-  <!ATTLIST extend-project revision CDATA #IMPLIED>
+  <!ATTLIST extend-project dest-path   CDATA #IMPLIED>
-  <!ATTLIST extend-project remote CDATA #IMPLIED>
+  <!ATTLIST extend-project groups      CDATA #IMPLIED>
+  <!ATTLIST extend-project revision    CDATA #IMPLIED>
+  <!ATTLIST extend-project remote      CDATA #IMPLIED>
   <!ATTLIST extend-project dest-branch CDATA #IMPLIED>
-  <!ATTLIST extend-project upstream CDATA #IMPLIED>
+  <!ATTLIST extend-project upstream    CDATA #IMPLIED>
+  <!ATTLIST extend-project base-rev    CDATA #IMPLIED>
 
   <!ELEMENT remove-project EMPTY>
   <!ATTLIST remove-project name     CDATA #IMPLIED>
   <!ATTLIST remove-project path     CDATA #IMPLIED>
   <!ATTLIST remove-project optional CDATA #IMPLIED>
+  <!ATTLIST remove-project base-rev CDATA #IMPLIED>
 
   <!ELEMENT repo-hooks EMPTY>
-  <!ATTLIST repo-hooks in-project CDATA #REQUIRED>
+  <!ATTLIST repo-hooks in-project   CDATA #REQUIRED>
   <!ATTLIST repo-hooks enabled-list CDATA #REQUIRED>
 
   <!ELEMENT superproject EMPTY>
@@ -123,7 +129,7 @@ following DTD:
   <!ATTLIST superproject revision CDATA #IMPLIED>
 
   <!ELEMENT contactinfo EMPTY>
-  <!ATTLIST contactinfo bugurl  CDATA #REQUIRED>
+  <!ATTLIST contactinfo bugurl CDATA #REQUIRED>
 
   <!ELEMENT include EMPTY>
   <!ATTLIST include name     CDATA #REQUIRED>
@@ -209,7 +215,9 @@ can be found.  Used when syncing a revision locked manifest in
 -c mode to avoid having to sync the entire ref space. Project elements
 not setting their own `upstream` will inherit this value.
 
-Attribute `sync-j`: Number of parallel jobs to use when synching.
+Attribute `sync-j`: Number of parallel jobs to use when syncing.
+
+Attribute `sync-j-max`: Maximum number of parallel jobs to use when syncing.
 
 Attribute `sync-c`: Set to true to only sync the given Git
 branch (specified in the `revision` attribute) rather than the
@@ -229,26 +237,7 @@ At most one manifest-server may be specified. The url attribute
 is used to specify the URL of a manifest server, which is an
 XML RPC service.
 
-The manifest server should implement the following RPC methods:
+See the [smart sync documentation](./smart-sync.md) for more details.
-
-    GetApprovedManifest(branch, target)
-
-Return a manifest in which each project is pegged to a known good revision
-for the current branch and target. This is used by repo sync when the
---smart-sync option is given.
-
-The target to use is defined by environment variables TARGET_PRODUCT
-and TARGET_BUILD_VARIANT. These variables are used to create a string
-of the form $TARGET_PRODUCT-$TARGET_BUILD_VARIANT, e.g. passion-userdebug.
-If one of those variables or both are not present, the program will call
-GetApprovedManifest without the target parameter and the manifest server
-should choose a reasonable default target.
-
-    GetManifest(tag)
-
-Return a manifest in which each project is pegged to the revision at
-the specified tag. This is used by repo sync when the --smart-tag option
-is given.
 
 
 ### Element submanifest
@@ -302,7 +291,7 @@ should be placed.  If not supplied, `revision` is used.
 
 `path` may not be an absolute path or use "." or ".." path components.
 
-Attribute `groups`: List of additional groups to which all projects
+Attribute `groups`: Set of additional groups to which all projects
 in the included submanifest belong. This appends and recurses, meaning
 all projects in submanifests carry all parent submanifest groups.
 Same syntax as the corresponding element of `project`.
@@ -370,7 +359,7 @@ When using `repo upload`, changes will be submitted for code
 review on this branch. If unspecified both here and in the
 default element, `revision` is used instead.
 
-Attribute `groups`: List of groups to which this project belongs,
+Attribute `groups`: Set of groups to which this project belongs,
 whitespace or comma separated.  All projects belong to the group
 "all", and each project automatically belongs to a group of
 its name:`name` and path:`path`.  E.g. for
@@ -401,6 +390,22 @@ rather than the `name` attribute.  This attribute only applies to the
 local mirrors syncing, it will be ignored when syncing the projects in a
 client working directory.
 
+Attribute `sync-strategy`: Set the sync strategy used when fetching this
+project.  Currently the only supported value is `stateless`.  When set to
+`stateless`, repo will run a reflog expiration and aggressive garbage collection
+at the end of the sync process.  This is useful for projects that contain
+large binary files and use `clone-depth="1"`, where garbage can accumulate
+as binaries are added, deleted, or modified across successive syncs.
+
+During a stateless sync, repo checks the following before cleaning up:
+1. The project does not share an object directory with other projects.
+2. The working tree is clean (no uncommitted changes, no untracked files).
+3. There are no unpushed local commits.
+4. There is no Git stash.
+
+If any of these conditions are not met, repo falls back to a standard
+sync without garbage collection.
+
 ### Element extend-project
 
 Modify the attributes of the named project.
@@ -410,6 +415,11 @@ attributes of an existing project without completely replacing the
 existing project definition.  This makes the local manifest more robust
 against changes to the original manifest.
 
+The `extend-project` element can also contain `annotation`, `copyfile`, and
+`linkfile` child elements. These are added to the project's definition. A
+`copyfile` or `linkfile` with a `dest` that already exists in the project
+will overwrite the original.
+
 Attribute `path`: If specified, limit the change to projects checked out
 at the specified path, rather than all projects with the given name.
 
@@ -418,7 +428,7 @@ of the repo client where the Git working directory for this project
 should be placed.  This is used to move a project in the checkout by
 overriding the existing `path` setting.
 
-Attribute `groups`: List of additional groups to which this project
+Attribute `groups`: Set of additional groups to which this project
 belongs.  Same syntax as the corresponding element of `project`.
 
 Attribute `revision`: If specified, overrides the revision of the original
@@ -433,22 +443,31 @@ project.  Same syntax as the corresponding element of `project`.
 Attribute `upstream`: If specified, overrides the upstream of the original
 project.  Same syntax as the corresponding element of `project`.
 
+Attribute `base-rev`: If specified, adds a check against the revision
+to be extended. Manifest parse will fail and give a list of mismatch extends
+if the revisions being extended have changed since base-rev was set.
+Intended for use with layered manifests using hash revisions to prevent
+patch branches hiding newer upstream revisions. Also compares named refs
+like branches or tags but is misleading if branches are used as base-rev.
+Same syntax as the corresponding element of `project`.
+
 ### Element annotation
 
 Zero or more annotation elements may be specified as children of a
-project or remote element. Each element describes a name-value pair.
+project element, an extend-project element, or a remote element. Each
-For projects, this name-value pair will be exported into each project's
+element describes a name-value pair. For projects, this name-value pair
-environment during a 'forall' command, prefixed with `REPO__`.  In addition,
+will be exported into each project's environment during a 'forall'
-there is an optional attribute "keep" which accepts the case insensitive values
+command, prefixed with `REPO__`.  In addition, there is an optional
-"true" (default) or "false".  This attribute determines whether or not the
+attribute "keep" which accepts the case insensitive values "true"
+(default) or "false". This attribute determines whether or not the
 annotation will be kept when exported with the manifest subcommand.
 
 ### Element copyfile
 
 Zero or more copyfile elements may be specified as children of a
-project element. Each element describes a src-dest pair of files;
+project element, or an extend-project element. Each element describes a
-the "src" file will be copied to the "dest" place during `repo sync`
+src-dest pair of files; the "src" file will be copied to the "dest"
-command.
+place during `repo sync` command.
 
 "src" is project relative, "dest" is relative to the top of the tree.
 Copying from paths outside of the project or to paths outside of the repo
@@ -459,10 +478,14 @@ Intermediate paths must not be symlinks either.
 
 Parent directories of "dest" will be automatically created if missing.
 
+The files are copied in the order they are specified in the manifests.
+If multiple elements specify the same source and destination, they will
+only be applied as one, based on the first occurence. Files are copied
+before any links specified via linkfile elements are created.
+
 ### Element linkfile
 
-It's just like copyfile and runs at the same time as copyfile but
+It's just like copyfile, but instead of copying it creates a symlink.
-instead of copying it creates a symlink.
 
 The symlink is created at "dest" (relative to the top of the tree) and
 points to the path specified by "src" which is a path in the project.
@@ -472,6 +495,11 @@ Parent directories of "dest" will be automatically created if missing.
 The symlink target may be a file or directory, but it may not point outside
 of the repo client.
 
+The links are created in the order they are specified in the manifests.
+If multiple elements specify the same source and destination, they will
+only be applied as one, based on the first occurence. Links are created
+after any files specified via copyfile elements are copied.
+
 ### Element remove-project
 
 Deletes a project from the internal manifest table, possibly
@@ -496,6 +524,14 @@ name. Logic otherwise behaves like both are specified.
 Attribute `optional`: Set to true to ignore remove-project elements with no
 matching `project` element.
 
+Attribute `base-rev`: If specified, adds a check against the revision
+to be removed. Manifest parse will fail and give a list of mismatch removes
+if the revisions being removed have changed since base-rev was set.
+Intended for use with layered manifests using hash revisions to prevent
+patch branches hiding newer upstream revisions. Also compares named refs
+like branches or tags but is misleading if branches are used as base-rev.
+Same syntax as the corresponding element of `project`.
+
 ### Element repo-hooks
 
 NB: See the [practical documentation](./repo-hooks.md) for using repo hooks.
@@ -561,13 +597,16 @@ the manifest repository's root.
 "name" may not be an absolute path or use "." or ".." path components.
 These restrictions are not enforced for [Local Manifests].
 
-Attribute `groups`: List of additional groups to which all projects
+Attribute `groups`: Set of additional groups to which all projects
 in the included manifest belong. This appends and recurses, meaning
 all projects in included manifests carry all parent include groups.
+This also applies to all extend-project elements in the included manifests.
 Same syntax as the corresponding element of `project`.
 
 Attribute `revision`: Name of a Git branch (e.g. `main` or `refs/heads/main`)
-default to which all projects in the included manifest belong.
+default to which all projects in the included manifest belong. This recurses,
+meaning it will apply to all projects in all manifests included as a result of
+this element.
 
 ## Local Manifests {#local-manifests}
 

docs/python-support.md

@@ -33,9 +33,8 @@ you have newer versions installed, your choices are:
 
 *   Modify the [repo launcher]'s shebang to suite your environment.
 *   Download an older version of the [repo launcher] and don't upgrade it.
-    Be aware that there is no guarantee old repo launchers are WILL work with
+    Be aware that we do not guarantee old repo launchers will work with current
-    current versions of repo.  Bug reports using old launchers will not be
+    versions of repo.  Bug reports using old launchers will not be accepted.
-    accepted.
 
 ## When to drop support
 

docs/release-process.md

@@ -96,6 +96,9 @@ If that tag is valid, then repo will warn and use that commit instead.
 
 If that tag cannot be verified, it gives up and forces the user to resolve.
 
+If env variable `REPO_SKIP_SELF_UPDATE` is defined, this will
+bypass the self update algorithm.
+
 ### Force an update
 
 The `repo selfupdate` command can be used to force an immediate update.
@@ -202,7 +205,7 @@ still support them.
 Things in italics are things we used to care about but probably don't anymore.
 
 |   Date   |     EOL      | [Git][rel-g] | [Python][rel-p] | [SSH][rel-o] | [Ubuntu][rel-u] / [Debian][rel-d] | Git | Python | SSH |
-|:--------:|:------------:|:------------:|:---------------:|:------------:|-----------------------------------|-----|--------|-----|
+|:--------:|:------------:|:------------:|:---------------:|:------------:|-----------------------------------|:---:|:------:|:---:|
 | Apr 2008 |              |              |                 | 5.0          |
 | Jun 2008 |              |              |                 | 5.1          |
 | Oct 2008 | *Oct 2013*   |              | 2.6.0           |              | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
@@ -241,7 +244,7 @@ Things in italics are things we used to care about but probably don't anymore.
 | Feb 2014 | *Dec 2014*   | **1.9.0**    |                 |              | *14.04 Trusty* |
 | Mar 2014 | *Mar 2019*   |              | *3.4.0*         |              | *14.04 Trusty* - 15.10 Wily / *Jessie* |
 | Mar 2014 |              |              |                 | 6.6          | *14.04 Trusty* - 14.10 Utopic |
-| Apr 2014 | *Apr 2022*   |              |                 |              | *14.04 Trusty*       | 1.9.1    | 2.7.5 3.4.0  | 6.6 |
+| Apr 2014 | *Apr 2024*   |              |                 |              | *14.04 Trusty*       | 1.9.1    | 2.7.5 3.4.0  | 6.6 |
 | May 2014 | *Dec 2014*   | 2.0.0        |
 | Aug 2014 | *Dec 2014*   | *2.1.0*      |                 |              | 14.10 Utopic - 15.04 Vivid / *Jessie* |
 | Oct 2014 |              |              |                 | 6.7          | 15.04 Vivid |
@@ -262,7 +265,7 @@ Things in italics are things we used to care about but probably don't anymore.
 | Jan 2016 | *Jul 2017*   | *2.7.0*      |                 |              | *16.04 Xenial* |
 | Feb 2016 |              |              |                 | 7.2          | *16.04 Xenial* |
 | Mar 2016 | *Jul 2017*   | 2.8.0        |
-| Apr 2016 | *Apr 2024*   |              |                 |              | *16.04 Xenial*       | 2.7.4    | 2.7.11 3.5.1 | 7.2 |
+| Apr 2016 | *Apr 2026*   |              |                 |              | *16.04 Xenial*       | 2.7.4    | 2.7.11 3.5.1 | 7.2 |
 | Jun 2016 | *Jul 2017*   | 2.9.0        |                 |              | 16.10 Yakkety |
 | Jul 2016 |              |              |                 | 7.3          | 16.10 Yakkety |
 | Sep 2016 | *Sep 2017*   | 2.10.0       |
@@ -312,14 +315,33 @@ Things in italics are things we used to care about but probably don't anymore.
 | Oct 2020 |              |              |                 |              | 20.10 Groovy         | 2.27.0   | 2.7.18 3.8.6 | 8.3 |
 | Oct 2020 | **Oct 2025** |              | 3.9.0           |              | 21.04 Hirsute / **Bullseye** |
 | Dec 2020 | *Mar 2021*   | 2.30.0       |                 |              | 21.04 Hirsute / **Bullseye** |
-| Mar 2021 |              | 2.31.0       |
+| Mar 2021 |              | 2.31.0       |                 | 8.5          |
-| Mar 2021 |              |              |                 | 8.5          |
 | Apr 2021 |              |              |                 | 8.6          |
 | Apr 2021 | *Jan 2022*   |              |                 |              | 21.04 Hirsute        | 2.30.2   | 2.7.18 3.9.4 | 8.4 |
 | Jun 2021 |              | 2.32.0       |
-| Aug 2021 |              | 2.33.0       |
+| Aug 2021 |              | 2.33.0       |                 | 8.7          |
-| Aug 2021 |              |              |                 | 8.7          |
 | Aug 2021 | **Aug 2026** |              |                 |              | **Debian 11 Bullseye** | 2.30.2 | 2.7.18 3.9.2 | 8.4 |
+| Sep 2021 |              |              |                 | 8.8          |
+| Oct 2021 |              | 2.34.0       | 3.10.0          |              | **22.04 Jammy** |
+| Jan 2022 |              | 2.35.0       |
+| Feb 2022 |              |              |                 | 8.9          | **22.04 Jammy** |
+| Apr 2022 |              | 2.36.0       |                 | 9.0          |
+| Apr 2022 | **Apr 2032** |              |                 |              | **22.04 Jammy**      | 2.34.1 | 2.7.18 3.10.6 | 8.9 |
+| Jun 2022 |              | 2.37.0       |
+| Oct 2022 |              | 2.38.0       |                 | 9.1          |
+| Oct 2022 |              |              | 3.11.0          |              | **Bookworm** |
+| Dec 2022 |              | 2.39.0       |                 |              | **Bookworm** |
+| Feb 2023 |              |              |                 | 9.2          | **Bookworm** |
+| Mar 2023 |              | 2.40.0       |                 | 9.3          |
+| Jun 2023 |              | 2.41.0       |
+| Jun 2023 | **Jun 2028** |              |                 |              | **Debian 12 Bookworm** | 2.39.2 | 3.11.2 | 9.2 |
+| Aug 2023 |              | 2.42.0       |                 | 9.4          |
+| Oct 2023 |              |              | 3.12.0          | 9.5          |
+| Nov 2022 |              | 2.43.0       |
+| Dec 2023 |              |              |                 | 9.6          |
+| Feb 2024 |              | 2.44.0       |
+| Mar 2024 |              |              |                 | 9.7          |
+| Oct 2024 |              |              | 3.13.0          |
 | **Date** |   **EOL**    | **[Git][rel-g]** | **[Python][rel-p]** | **[SSH][rel-o]** | **[Ubuntu][rel-u] / [Debian][rel-d]** | **Git** | **Python** | **SSH** |
 
 
@@ -328,7 +350,7 @@ Things in italics are things we used to care about but probably don't anymore.
 [rel-g]: https://en.wikipedia.org/wiki/Git#Releases
 [rel-o]: https://www.openssh.com/releasenotes.html
 [rel-p]: https://en.wikipedia.org/wiki/History_of_Python#Table_of_versions
-[rel-u]: https://en.wikipedia.org/wiki/Ubuntu_version_history#Table_of_versions
+[rel-u]: https://wiki.ubuntu.com/Releases
 [example announcement]: https://groups.google.com/d/topic/repo-discuss/UGBNismWo1M/discussion
 [repo-discuss@googlegroups.com]: https://groups.google.com/forum/#!forum/repo-discuss
 [go/repo-release]: https://goto.google.com/repo-release

docs/repo-hooks.md

@@ -133,3 +133,43 @@ def main(project_list, worktree_list=None, **kwargs):
       kwargs: Leave this here for forward-compatibility.
     """
 ```
+
+### post-sync
+
+This hook runs when `repo sync` completes without errors.
+
+Note: This includes cases where no actual checkout may occur. The hook will still run.
+For example:
+- `repo sync -n` performs network fetches only and skips the checkout phase.
+- `repo sync <project>` only updates the specified project(s).
+- Partial failures may still result in a successful exit.
+
+This hook is useful for post-processing tasks such as setting up git hooks,
+bootstrapping configuration files, or running project initialization logic.
+
+The hook is defined using the existing `<repo-hooks>` manifest block and is
+optional. If the hook script fails or is missing, `repo sync` will still
+complete successfully, and the error will be printed as a warning.
+
+Example:
+
+```xml
+<project name="myorg/dev-tools" path="tools" revision="main" />
+<repo-hooks in-project="myorg/dev-tools" enabled-list="post-sync">
+  <hook name="post-sync" />
+</repo-hooks>
+```
+
+The `post-sync.py` file should be defined like:
+
+```py
+def main(repo_topdir=None, **kwargs):
+    """Main function invoked directly by repo.
+
+    We must use the name "main" as that is what repo requires.
+
+    Args:
+      repo_topdir: The absolute path to the top-level directory of the repo workspace.
+      kwargs: Leave this here for forward-compatibility.
+    """
+```

docs/smart-sync.md

@@ -0,0 +1,129 @@
+# repo Smart Syncing
+
+Repo normally fetches & syncs manifests from the same URL specified during
+`repo init`, and that often fetches the latest revisions of all projects in
+the manifest.  This flow works well for tracking and developing with the
+latest code, but often it's desirable to sync to other points.  For example,
+to get a local build matching a specific release or build to reproduce bugs
+reported by other people.
+
+Repo's sync subcommand has support for fetching manifests from a server over
+an XML-RPC connection.  The local configuration and network API are defined by
+repo, but individual projects have to host their own server for the client to
+communicate with.
+
+This process is called "smart syncing" -- instead of blindly fetching the latest
+revision of all projects and getting an unknown state to develop against, the
+client passes a request to the server and is given a matching manifest that
+typically specifies specific commits for every project to fetch a known source
+state.
+
+[TOC]
+
+## Manifest Configuration
+
+The manifest specifies the server to communicate with via the
+the [`<manifest-server>` element](manifest-format.md#Element-manifest_server)
+element.  This is how the client knows what service to talk to.
+
+```xml
+  <manifest-server url="https://example.com/your/manifest/server/url" />
+```
+
+If the URL starts with `persistent-`, then the
+[`git-remote-persistent-https` helper](https://github.com/git/git/blob/HEAD/contrib/persistent-https/README)
+is used to communicate with the server.
+
+## Credentials
+
+Credentials may be specified directly in typical `username:password`
+[URI syntax](https://en.wikipedia.org/wiki/URI#Syntax) in the
+`<manifest-server>` element directly in the manifest.
+
+If they are not specified, `repo sync` has `--manifest-server-username=USERNAME`
+and `--manifest-server-password=PASSWORD` options.
+
+If those are not used, then repo will look up the host in your
+[`~/.netrc`](https://docs.python.org/3/library/netrc.html) database.
+
+When making the connection, cookies matching the host are automatically loaded
+from the cookiejar specified in
+[Git's `http.cookiefile` setting](https://git-scm.com/docs/git-config#Documentation/git-config.txt-httpcookieFile).
+
+## Manifest Server
+
+Unfortunately, there are no public reference implementations.  Google has an
+internal one for Android, but it is written using Google's internal systems,
+so wouldn't be that helpful as a reference.
+
+That said, the XML-RPC API is pretty simple, so any standard XML-RPC server
+example would do.  Google's internal server uses Python's
+[xmlrpc.server.SimpleXMLRPCDispatcher](https://docs.python.org/3/library/xmlrpc.server.html).
+
+## Network API
+
+The manifest server should implement the following RPC methods.
+
+### GetApprovedManifest
+
+> `GetApprovedManifest(branch: str, target: Optional[str]) -> str`
+
+The meaning of `branch` and `target` is not strictly defined.  The server may
+interpret them however it wants.  The recommended interpretation is that the
+`branch` matches the manifest branch, and `target` is an identifier for your
+project that matches something users would build.
+
+See the client section below for how repo typically generates these values.
+
+The server will return a manifest or an error.  If it's an error, repo will
+show the output directly to the user to provide a limited feedback channel.
+
+If the user's request is ambiguous and could match multiple manifests, the
+server has to decide whether to pick one automatically (and silently such that
+the user won't know there were multiple matches), or return an error and force
+the user to be more specific.
+
+### GetManifest
+
+> `GetManifest(tag: str) -> str`
+
+The meaning of `tag` is not strictly defined.  Projects are encouraged to use
+a system where the tag matches a unique source state.
+
+See the client section below for how repo typically generates these values.
+
+The server will return a manifest or an error.  If it's an error, repo will
+show the output directly to the user to provide a limited feedback channel.
+
+If the user's request is ambiguous and could match multiple manifests, the
+server has to decide whether to pick one automatically (and silently such that
+the user won't know there were multiple matches), or return an error and force
+the user to be more specific.
+
+## Client Options
+
+Once repo has successfully downloaded the manifest from the server, it saves a
+copy into `.repo/manifests/smart_sync_override.xml` so users can examine it.
+The next time `repo sync` is run, this file is automatically replaced or removed
+based on the current set of options.
+
+### --smart-sync
+
+Repo will call `GetApprovedManifest(branch[, target])`.
+
+The `branch` is determined by the current manifest branch as specified by
+`--manifest-branch=BRANCH` when running `repo init`.
+
+The `target` is defined by environment variables in the order below.  If none
+of them match, then `target` is omitted.  These variables were decided as they
+match the settings Android build environments automatically setup.
+
+1.  `${SYNC_TARGET}`: If defined, the value is used directly.
+2.  `${TARGET_PRODUCT}-${TARGET_RELEASE}-${TARGET_BUILD_VARIANT}`: If these
+    variables are all defined, then they are merged with `-` and used.
+3.  `${TARGET_PRODUCT}-${TARGET_BUILD_VARIANT}`: If these variables are all
+    defined, then they are merged with `-` and used.
+
+### --smart-tag=TAG
+
+Repo will call `GetManifest(TAG)`.

docs/windows.md

@@ -50,8 +50,11 @@ Git worktrees (see the previous section for more info).
 Repo will use symlinks heavily internally.
 On *NIX platforms, this isn't an issue, but Windows makes it a bit difficult.
 
-There are some documents out there for how to do this, but usually the easiest
+The easiest method to allow users to create symlinks is by enabling
-answer is to run your shell as an Administrator and invoke repo/git in that.
+[Windows Developer Mode](https://learn.microsoft.com/en-us/windows/advanced-settings/developer-mode).
+
+The next easiest answer is to run your shell as an Administrator and invoke
+repo/git in that.
 
 This isn't a great solution, but Windows doesn't make this easy, so here we are.
 

error.py

@@ -107,8 +107,8 @@ class GitError(RepoError):
         return self.message
 
 
-class GitcUnsupportedError(RepoExitError):
+class GitAuthError(RepoExitError):
-    """Gitc no longer supported."""
+    """Cannot talk to remote due to auth issue."""
 
 
 class UploadError(RepoError):

event_log.py

@@ -168,8 +168,10 @@ class EventLog:
                 f.write("\n")
 
 
-# An integer id that is unique across this invocation of the program.
+# An integer id that is unique across this invocation of the program, to be set
-_EVENT_ID = multiprocessing.Value("i", 1)
+# by the first Add event. We can't set it here since it results in leaked
+# resources (see: https://issues.gerritcodereview.com/353656374).
+_EVENT_ID = None
 
 
 def _NextEventId():
@@ -178,6 +180,12 @@ def _NextEventId():
     Returns:
         A unique, to this invocation of the program, integer id.
     """
+    global _EVENT_ID
+    if _EVENT_ID is None:
+        # There is a small chance of race condition - two parallel processes
+        # setting up _EVENT_ID. However, we expect TASK_COMMAND to happen before
+        # mp kicks in.
+        _EVENT_ID = multiprocessing.Value("i", 1)
     with _EVENT_ID.get_lock():
         val = _EVENT_ID.value
         _EVENT_ID.value += 1

git_command.py

@@ -22,7 +22,6 @@ from typing import Any, Optional
 
 from error import GitError
 from error import RepoExitError
-from git_refs import HEAD
 from git_trace2_event_log_base import BaseEventLog
 import platform_utils
 from repo_logging import RepoLogger
@@ -33,17 +32,6 @@ from wrapper import Wrapper
 
 
 GIT = "git"
-# NB: These do not need to be kept in sync with the repo launcher script.
-# These may be much newer as it allows the repo launcher to roll between
-# different repo releases while source versions might require a newer git.
-#
-# The soft version is when we start warning users that the version is old and
-# we'll be dropping support for it.  We'll refuse to work with versions older
-# than the hard version.
-#
-# git-1.7 is in (EOL) Ubuntu Precise.  git-1.9 is in Ubuntu Trusty.
-MIN_GIT_VERSION_SOFT = (1, 9, 1)
-MIN_GIT_VERSION_HARD = (1, 7, 2)
 GIT_DIR = "GIT_DIR"
 
 LAST_GITDIR = None
@@ -59,7 +47,7 @@ logger = RepoLogger(__file__)
 
 
 class _GitCall:
-    @functools.lru_cache(maxsize=None)
+    @functools.lru_cache(maxsize=None)  # noqa: B019
     def version_tuple(self):
         ret = Wrapper().ParseGitVersion()
         if ret is None:
@@ -94,7 +82,7 @@ def RepoSourceVersion():
         proj = os.path.dirname(os.path.abspath(__file__))
         env[GIT_DIR] = os.path.join(proj, ".git")
         result = subprocess.run(
-            [GIT, "describe", HEAD],
+            [GIT, "describe", "HEAD"],
             stdout=subprocess.PIPE,
             stderr=subprocess.DEVNULL,
             encoding="utf-8",
@@ -107,7 +95,7 @@ def RepoSourceVersion():
                 ver = ver[1:]
         else:
             ver = "unknown"
-        setattr(RepoSourceVersion, "version", ver)
+        RepoSourceVersion.version = ver
 
     return ver
 
@@ -135,6 +123,8 @@ def GetEventTargetPath():
     if retval == 0:
         # Strip trailing carriage-return in path.
         path = p.stdout.rstrip("\n")
+        if path == "":
+            return None
     elif retval != 1:
         # `git config --get` is documented to produce an exit status of `1`
         # if the requested variable is not present in the configuration.
@@ -247,9 +237,9 @@ def _build_env(
             s = p + " " + s
         env["GIT_CONFIG_PARAMETERS"] = s
     if "GIT_ALLOW_PROTOCOL" not in env:
-        env[
+        env["GIT_ALLOW_PROTOCOL"] = (
-            "GIT_ALLOW_PROTOCOL"
+            "file:git:http:https:ssh:persistent-http:persistent-https:sso:rpc"
-        ] = "file:git:http:https:ssh:persistent-http:persistent-https:sso:rpc"
+        )
     env["GIT_HTTP_USER_AGENT"] = user_agent.git
 
     if objdir:
@@ -322,12 +312,15 @@ class GitCommand:
             cwd = None
         command_name = cmdv[0]
         command.append(command_name)
-        # Need to use the --progress flag for fetch/clone so output will be
+
-        # displayed as by default git only does progress output if stderr is a
+        if command_name in ("fetch", "clone"):
-        # TTY.
+            env["GIT_TERMINAL_PROMPT"] = "0"
-        if sys.stderr.isatty() and command_name in ("fetch", "clone"):
+            # Need to use the --progress flag for fetch/clone so output will be
-            if "--progress" not in cmdv and "--quiet" not in cmdv:
+            # displayed as by default git only does progress output if stderr is
-                command.append("--progress")
+            # a TTY.
+            if sys.stderr.isatty():
+                if "--progress" not in cmdv and "--quiet" not in cmdv:
+                    command.append("--progress")
         command.extend(cmdv[1:])
 
         event_log = (
@@ -356,9 +349,9 @@ class GitCommand:
                         "Project": e.project,
                         "CommandName": command_name,
                         "Message": str(e),
-                        "ReturnCode": str(e.git_rc)
+                        "ReturnCode": (
-                        if e.git_rc is not None
+                            str(e.git_rc) if e.git_rc is not None else None
-                        else None,
+                        ),
                         "IsError": log_as_error,
                     }
                 )
@@ -618,7 +611,7 @@ class GitCommandError(GitError):
         self.git_stderr = git_stderr
 
     @property
-    @functools.lru_cache(maxsize=None)
+    @functools.lru_cache(maxsize=None)  # noqa: B019
     def suggestion(self):
         """Returns helpful next steps for the given stderr."""
         if not self.git_stderr:

git_config.py

@@ -42,7 +42,7 @@ SYNC_STATE_PREFIX = "repo.syncstate."
 
 ID_RE = re.compile(r"^[0-9a-f]{40}$")
 
-REVIEW_CACHE = dict()
+REVIEW_CACHE = {}
 
 
 def IsChange(rev):
@@ -90,6 +90,20 @@ class GitConfig:
 
     @staticmethod
     def _getUserConfig():
+        """Get the user-specific config file.
+
+        Prefers the XDG config location if available, with fallback to
+        ~/.gitconfig
+
+        This matches git behavior:
+        https://git-scm.com/docs/git-config#FILES
+        """
+        xdg_config_home = os.getenv(
+            "XDG_CONFIG_HOME", os.path.expanduser("~/.config")
+        )
+        xdg_config_file = os.path.join(xdg_config_home, "git", "config")
+        if os.path.exists(xdg_config_file):
+            return xdg_config_file
         return os.path.expanduser("~/.gitconfig")
 
     @classmethod
@@ -97,7 +111,7 @@ class GitConfig:
         return cls(configfile=os.path.join(gitdir, "config"), defaults=defaults)
 
     def __init__(self, configfile, defaults=None, jsonFile=None):
-        self.file = configfile
+        self.file = str(configfile)
         self.defaults = defaults
         self._cache_dict = None
         self._section_dict = None
@@ -208,6 +222,12 @@ class GitConfig:
             value = "true" if value else "false"
         self.SetString(name, value)
 
+    def SetInt(self, name: str, value: int) -> None:
+        """Set an integer value for a key."""
+        if value is not None:
+            value = str(value)
+        self.SetString(name, value)
+
     def GetString(self, name: str, all_keys: bool = False) -> Union[str, None]:
         """Get the first value for a key, or None if it is not defined.
 

git_refs.py

@@ -14,6 +14,7 @@
 
 import os
 
+from git_command import GitCommand
 import platform_utils
 from repo_trace import Trace
 
@@ -86,9 +87,8 @@ class GitRefs:
             self._symref = {}
             self._mtime = {}
 
-            self._ReadPackedRefs()
+            self._ReadRefs()
-            self._ReadLoose("refs/")
+            self._ReadSymbolicRef(HEAD)
-            self._ReadLoose1(os.path.join(self._gitdir, HEAD), HEAD)
 
             scan = self._symref
             attempts = 0
@@ -102,64 +102,95 @@ class GitRefs:
                 scan = scan_next
                 attempts += 1
 
-    def _ReadPackedRefs(self):
+            self._TrackMtime(HEAD)
-        path = os.path.join(self._gitdir, "packed-refs")
+            self._TrackMtime("config")
+            self._TrackMtime("packed-refs")
+            self._TrackTreeMtimes("refs")
+            self._TrackTreeMtimes("reftable")
+
+    @staticmethod
+    def _IsNullRef(ref_id: str) -> bool:
+        """Check if a ref_id is a null object ID."""
+        return ref_id and all(ch == "0" for ch in ref_id)
+
+    def _ReadRefs(self) -> None:
+        """Read all references using git for-each-ref."""
+        p = GitCommand(
+            None,
+            ["for-each-ref", "--format=%(objectname)%00%(refname)%00%(symref)"],
+            capture_stdout=True,
+            capture_stderr=True,
+            bare=True,
+            gitdir=self._gitdir,
+        )
+        if p.Wait() != 0:
+            return
+
+        for line in p.stdout.splitlines():
+            ref_id, name, symref = line.split("\0")
+            if symref:
+                self._symref[name] = symref
+            elif ref_id and not self._IsNullRef(ref_id):
+                self._phyref[name] = ref_id
+
+    def _ReadSymbolicRef(self, name: str) -> None:
+        """Read a symbolic reference."""
+        p = GitCommand(
+            None,
+            ["symbolic-ref", "-q", name],
+            capture_stdout=True,
+            capture_stderr=True,
+            bare=True,
+            gitdir=self._gitdir,
+        )
+        if p.Wait() == 0:
+            ref = p.stdout.strip()
+            if ref:
+                self._symref[name] = ref
+                return
+
+        p = GitCommand(
+            None,
+            ["rev-parse", "--verify", "-q", name],
+            capture_stdout=True,
+            capture_stderr=True,
+            bare=True,
+            gitdir=self._gitdir,
+        )
+        if p.Wait() == 0:
+            ref_id = p.stdout.strip()
+            if ref_id:
+                self._phyref[name] = ref_id
+
+    def _TrackMtime(self, name: str) -> None:
+        """Track the modification time of a specific gitdir path."""
+        path = os.path.join(self._gitdir, name)
         try:
-            fd = open(path)
+            self._mtime[name] = os.path.getmtime(path)
-            mtime = os.path.getmtime(path)
         except OSError:
             return
+
+    def _TrackTreeMtimes(self, root: str) -> None:
+        """Recursively track modification times for a directory tree."""
+        root_path = os.path.join(self._gitdir, root)
         try:
-            for line in fd:
+            if not platform_utils.isdir(root_path):
-                line = str(line)
+                return
-                if line[0] == "#":
+        except OSError:
-                    continue
-                if line[0] == "^":
-                    continue
-
-                line = line[:-1]
-                p = line.split(" ")
-                ref_id = p[0]
-                name = p[1]
-
-                self._phyref[name] = ref_id
-        finally:
-            fd.close()
-        self._mtime["packed-refs"] = mtime
-
-    def _ReadLoose(self, prefix):
-        base = os.path.join(self._gitdir, prefix)
-        for name in platform_utils.listdir(base):
-            p = os.path.join(base, name)
-            # We don't implement the full ref validation algorithm, just the
-            # simple rules that would show up in local filesystems.
-            # https://git-scm.com/docs/git-check-ref-format
-            if name.startswith(".") or name.endswith(".lock"):
-                pass
-            elif platform_utils.isdir(p):
-                self._mtime[prefix] = os.path.getmtime(base)
-                self._ReadLoose(prefix + name + "/")
-            else:
-                self._ReadLoose1(p, prefix + name)
-
-    def _ReadLoose1(self, path, name):
-        try:
-            with open(path) as fd:
-                mtime = os.path.getmtime(path)
-                ref_id = fd.readline()
-        except (OSError, UnicodeError):
             return
 
-        try:
+        to_scan = [root]
-            ref_id = ref_id.decode()
+        while to_scan:
-        except AttributeError:
+            name = to_scan.pop()
-            pass
+            self._TrackMtime(name)
-        if not ref_id:
+            path = os.path.join(self._gitdir, name)
-            return
+            if not platform_utils.isdir(path):
-        ref_id = ref_id[:-1]
+                continue
 
-        if ref_id.startswith("ref: "):
+            for child in platform_utils.listdir(path):
-            self._symref[name] = ref_id[5:]
+                child_name = os.path.join(name, child)
-        else:
+                child_path = os.path.join(self._gitdir, child_name)
-            self._phyref[name] = ref_id
+                if platform_utils.isdir(child_path):
-        self._mtime[name] = mtime
+                    to_scan.append(child_name)
+                else:
+                    self._TrackMtime(child_name)

git_ssh

@@ -1,5 +1,4 @@
 #!/bin/sh
-#
 # Copyright (C) 2009 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

git_superproject.py

@@ -23,16 +23,20 @@ Examples:
 """
 
 import functools
+import glob
 import hashlib
 import os
 import sys
+import tempfile
 import time
 from typing import NamedTuple
+import urllib.parse
 
 from git_command import git_require
 from git_command import GitCommand
 from git_config import RepoConfig
 from git_refs import GitRefs
+import platform_utils
 
 
 _SUPERPROJECT_GIT_NAME = "superproject.git"
@@ -128,6 +132,30 @@ class Superproject:
         """Set the _print_messages attribute."""
         self._print_messages = value
 
+    @property
+    def commit_id(self):
+        """Returns the commit ID of the superproject checkout."""
+        cmd = ["rev-parse", self.revision]
+        p = GitCommand(
+            None,  # project
+            cmd,
+            gitdir=self._work_git,
+            bare=True,
+            capture_stdout=True,
+            capture_stderr=True,
+        )
+        retval = p.Wait()
+        if retval != 0:
+            self._LogWarning(
+                "git rev-parse call failed, command: git {}, "
+                "return code: {}, stderr: {}",
+                cmd,
+                retval,
+                p.stderr,
+            )
+            return None
+        return p.stdout
+
     @property
     def project_commit_ids(self):
         """Returns a dictionary of projects and their commit ids."""
@@ -140,12 +168,33 @@ class Superproject:
             self._manifest_path if os.path.exists(self._manifest_path) else None
         )
 
+    @property
+    def repo_id(self):
+        """Returns the repo ID for the superproject.
+
+        For example, if the superproject points to:
+            https://android-review.googlesource.com/platform/superproject/
+        Then the repo_id would be:
+            android/platform/superproject
+        """
+        review_url = self.remote.review
+        if review_url:
+            parsed_url = urllib.parse.urlparse(review_url)
+            netloc = parsed_url.netloc
+            if netloc:
+                parts = netloc.split("-review", 1)
+                host = parts[0]
+                rev = GitRefs(self._work_git).get("HEAD")
+                return f"{host}/{self.name}@{rev}"
+        return None
+
     def _LogMessage(self, fmt, *inputs):
         """Logs message to stderr and _git_event_log."""
         message = f"{self._LogMessagePrefix()} {fmt.format(*inputs)}"
         if self._print_messages:
             print(message, file=sys.stderr)
-        self._git_event_log.ErrorEvent(message, fmt)
+        if self._git_event_log:
+            self._git_event_log.ErrorEvent(message, fmt)
 
     def _LogMessagePrefix(self):
         """Returns the prefix string to be logged in each log message"""
@@ -169,30 +218,63 @@ class Superproject:
         """
         if not os.path.exists(self._superproject_path):
             os.mkdir(self._superproject_path)
-        if not self._quiet and not os.path.exists(self._work_git):
+
+        if os.path.exists(self._work_git):
+            return True
+
+        if not self._quiet:
             print(
                 "%s: Performing initial setup for superproject; this might "
                 "take several minutes." % self._work_git
             )
-        cmd = ["init", "--bare", self._work_git_name]
+
-        p = GitCommand(
+        tmp_gitdir_prefix = ".tmp-superproject-initgitdir-"
-            None,
+        tmp_gitdir = tempfile.mkdtemp(
-            cmd,
+            prefix=tmp_gitdir_prefix,
-            cwd=self._superproject_path,
+            dir=self._superproject_path,
-            capture_stdout=True,
-            capture_stderr=True,
         )
-        retval = p.Wait()
+        tmp_git_name = os.path.basename(tmp_gitdir)
-        if retval:
+
-            self._LogWarning(
+        try:
-                "git init call failed, command: git {}, "
+            cmd = ["init", "--bare", tmp_git_name]
-                "return code: {}, stderr: {}",
+            p = GitCommand(
+                None,
                 cmd,
-                retval,
+                cwd=self._superproject_path,
-                p.stderr,
+                capture_stdout=True,
+                capture_stderr=True,
             )
-            return False
+            retval = p.Wait()
-        return True
+            if retval:
+                self._LogWarning(
+                    "git init call failed, command: git {}, "
+                    "return code: {}, stderr: {}",
+                    cmd,
+                    retval,
+                    p.stderr,
+                )
+                return False
+
+            platform_utils.rename(tmp_gitdir, self._work_git)
+            tmp_gitdir = None
+            return True
+        finally:
+            # Clean up the temporary directory created during the process,
+            # as well as any stale ones left over from previous attempts.
+            if tmp_gitdir and os.path.exists(tmp_gitdir):
+                platform_utils.rmtree(tmp_gitdir)
+
+            age_threshold = 60 * 60 * 24  # 1 day in seconds
+            now = time.time()
+            for tmp_dir in glob.glob(
+                os.path.join(self._superproject_path, f"{tmp_gitdir_prefix}*")
+            ):
+                try:
+                    mtime = os.path.getmtime(tmp_dir)
+                    if now - mtime > age_threshold:
+                        platform_utils.rmtree(tmp_dir)
+                except OSError:
+                    pass
 
     def _Fetch(self):
         """Fetches a superproject for the manifest based on |_remote_url|.
@@ -258,7 +340,7 @@ class Superproject:
         Works only in git repositories.
 
         Returns:
-            data: data returned from 'git ls-tree ...' instead of None.
+            data: data returned from 'git ls-tree ...'. None on error.
         """
         if not os.path.exists(self._work_git):
             self._LogWarning(
@@ -288,6 +370,7 @@ class Superproject:
                 retval,
                 p.stderr,
             )
+            return None
         return data
 
     def Sync(self, git_event_log):
@@ -307,8 +390,6 @@ class Superproject:
             )
             return SyncResult(False, False)
 
-        _PrintBetaNotice()
-
         should_exit = True
         if not self._remote_url:
             self._LogWarning(
@@ -377,7 +458,8 @@ class Superproject:
             )
             return None
         manifest_str = self._manifest.ToXml(
-            groups=self._manifest.GetGroupsStr(), omit_local=True
+            filter_groups=self._manifest.GetManifestGroupsStr(),
+            omit_local=True,
         ).toxml()
         manifest_path = self._manifest_path
         try:
@@ -452,16 +534,6 @@ class Superproject:
         return UpdateProjectsResult(manifest_path, False)
 
 
-@functools.lru_cache(maxsize=10)
-def _PrintBetaNotice():
-    """Print the notice of beta status."""
-    print(
-        "NOTICE: --use-superproject is in beta; report any issues to the "
-        "address described in `repo version`",
-        file=sys.stderr,
-    )
-
-
 @functools.lru_cache(maxsize=None)
 def _UseSuperprojectFromConfiguration():
     """Returns the user choice of whether to use superproject."""

git_trace2_event_log.py

@@ -1,3 +1,19 @@
+# Copyright (C) 2020 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Event logging in the git trace2 EVENT format."""
+
 from git_command import GetEventTargetPath
 from git_command import RepoSourceVersion
 from git_trace2_event_log_base import BaseEventLog

git_trace2_event_log_base.py

@@ -38,6 +38,8 @@ import tempfile
 import threading
 
 
+# Timeout when sending events via socket (applies to connect, send)
+SOCK_TIMEOUT = 0.5  # in seconds
 # BaseEventLog __init__ Counter that is consistent within the same process
 p_init_count = 0
 
@@ -66,6 +68,7 @@ class BaseEventLog:
         global p_init_count
         p_init_count += 1
         self._log = []
+        self.verbose = False
         # Try to get session-id (sid) from environment (setup in repo launcher).
         KEY = "GIT_TRACE2_PARENT_SID"
         if env is None:
@@ -128,10 +131,10 @@ class BaseEventLog:
             "time": datetime.datetime.now(datetime.timezone.utc).isoformat(),
         }
 
-    def StartEvent(self):
+    def StartEvent(self, argv):
         """Append a 'start' event to the current log."""
         start_event = self._CreateEventDict("start")
-        start_event["argv"] = sys.argv
+        start_event["argv"] = argv
         self._log.append(start_event)
 
     def ExitEvent(self, result):
@@ -157,9 +160,11 @@ class BaseEventLog:
             name: Name of the primary command (ex: repo, git)
             subcommands: List of the sub-commands (ex: version, init, sync)
         """
-        command_event = self._CreateEventDict("command")
+        command_event = self._CreateEventDict("cmd_name")
+        name = f"{name}-"
+        name += "-".join(subcommands)
         command_event["name"] = name
-        command_event["subcommands"] = subcommands
+        command_event["hierarchy"] = name
         self._log.append(command_event)
 
     def LogConfigEvents(self, config, event_dict_name):
@@ -296,6 +301,7 @@ class BaseEventLog:
                     with socket.socket(
                         socket.AF_UNIX, socket.SOCK_STREAM
                     ) as sock:
+                        sock.settimeout(SOCK_TIMEOUT)
                         sock.connect(path)
                         self._WriteLog(sock.sendall)
                     return f"af_unix:stream:{path}"
@@ -304,10 +310,12 @@ class BaseEventLog:
                     # ignore the attempt and continue to DGRAM below. Otherwise,
                     # issue a warning.
                     if err.errno != errno.EPROTOTYPE:
-                        print(
+                        if self.verbose:
-                            f"repo: warning: git trace2 logging failed: {err}",
+                            print(
-                            file=sys.stderr,
+                                "repo: warning: git trace2 logging failed:",
-                        )
+                                f"{err}",
+                                file=sys.stderr,
+                            )
                         return None
             if socket_type == socket.SOCK_DGRAM or socket_type is None:
                 try:
@@ -317,18 +325,20 @@ class BaseEventLog:
                         self._WriteLog(lambda bs: sock.sendto(bs, path))
                         return f"af_unix:dgram:{path}"
                 except OSError as err:
-                    print(
+                    if self.verbose:
-                        f"repo: warning: git trace2 logging failed: {err}",
+                        print(
-                        file=sys.stderr,
+                            f"repo: warning: git trace2 logging failed: {err}",
-                    )
+                            file=sys.stderr,
+                        )
                     return None
             # Tried to open a socket but couldn't connect (SOCK_STREAM) or write
             # (SOCK_DGRAM).
-            print(
+            if self.verbose:
-                "repo: warning: git trace2 logging failed: could not write to "
+                print(
-                "socket",
+                    "repo: warning: git trace2 logging failed: could not"
-                file=sys.stderr,
+                    "write to socket",
-            )
+                    file=sys.stderr,
+                )
             return None
 
         # Path is an absolute path
@@ -343,9 +353,10 @@ class BaseEventLog:
                 self._WriteLog(f.write)
                 log_path = f.name
         except FileExistsError as err:
-            print(
+            if self.verbose:
-                "repo: warning: git trace2 logging failed: %r" % err,
+                print(
-                file=sys.stderr,
+                    "repo: warning: git trace2 logging failed: %r" % err,
-            )
+                    file=sys.stderr,
+                )
             return None
         return log_path

hooks.py

@@ -22,6 +22,13 @@ from error import HookError
 from git_refs import HEAD
 
 
+# The API we've documented to hook authors.  Keep in sync with repo-hooks.md.
+_API_ARGS = {
+    "pre-upload": {"project_list", "worktree_list"},
+    "post-sync": {"repo_topdir"},
+}
+
+
 class RepoHook:
     """A RepoHook contains information about a script to run as a hook.
 
@@ -56,6 +63,7 @@ class RepoHook:
         hooks_project,
         repo_topdir,
         manifest_url,
+        bug_url=None,
         bypass_hooks=False,
         allow_all_hooks=False,
         ignore_hooks=False,
@@ -75,6 +83,7 @@ class RepoHook:
                 run with CWD as this directory.
                 If you have a manifest, this is manifest.topdir.
             manifest_url: The URL to the manifest git repo.
+            bug_url: The URL to report issues.
             bypass_hooks: If True, then 'Do not run the hook'.
             allow_all_hooks: If True, then 'Run the hook without prompting'.
             ignore_hooks: If True, then 'Do not abort action if hooks fail'.
@@ -85,18 +94,18 @@ class RepoHook:
         self._hooks_project = hooks_project
         self._repo_topdir = repo_topdir
         self._manifest_url = manifest_url
+        self._bug_url = bug_url
         self._bypass_hooks = bypass_hooks
         self._allow_all_hooks = allow_all_hooks
         self._ignore_hooks = ignore_hooks
         self._abort_if_user_denies = abort_if_user_denies
 
         # Store the full path to the script for convenience.
-        if self._hooks_project:
+        self._script_fullpath = None
+        if self._hooks_project and self._hooks_project.worktree:
             self._script_fullpath = os.path.join(
                 self._hooks_project.worktree, self._hook_type + ".py"
             )
-        else:
-            self._script_fullpath = None
 
     def _GetHash(self):
         """Return a hash of the contents of the hooks directory.
@@ -414,11 +423,26 @@ class RepoHook:
                 ignore the result through the option combinations as listed in
                 AddHookOptionGroup().
         """
+        # Make sure our own callers use the documented API.
+        exp_kwargs = _API_ARGS.get(self._hook_type, set())
+        got_kwargs = set(kwargs.keys())
+        if exp_kwargs != got_kwargs:
+            print(
+                "repo internal error: "
+                f"hook '{self._hook_type}' called incorrectly\n"
+                f"  got:      {sorted(got_kwargs)}\n"
+                f"  expected: {sorted(exp_kwargs)}\n"
+                f"Please file a bug: {self._bug_url}",
+                file=sys.stderr,
+            )
+            return False
+
         # Do not do anything in case bypass_hooks is set, or
         # no-op if there is no hooks project or if hook is disabled.
         if (
             self._bypass_hooks
             or not self._hooks_project
+            or not self._script_fullpath
             or self._hook_type not in self._hooks_project.enabled_repo_hooks
         ):
             return True
@@ -472,6 +496,7 @@ class RepoHook:
                 "manifest_url": manifest.manifestProject.GetRemote(
                     "origin"
                 ).url,
+                "bug_url": manifest.contactinfo.bugurl,
             }
         )
         return cls(*args, **kwargs)

hooks/commit-msg

@@ -1,5 +1,8 @@
 #!/bin/sh
-# From Gerrit Code Review 3.10.0 d5403dbf335ba7d48977fc95170c3f7027c34659
+# DO NOT EDIT THIS FILE
+# All updates should be sent upstream: https://gerrit.googlesource.com/gerrit/
+# This is synced from commit: 62f5bbea67f6dafa6e22a601a0c298214c510caf
+# DO NOT EDIT THIS FILE
 #
 # Part of Gerrit Code Review (https://www.gerritcodereview.com/)
 #
@@ -31,8 +34,7 @@ if test ! -f "$1" ; then
 fi
 
 # Do not create a change id if requested
-create_setting=$(git config --get gerrit.createChangeId)
+case "$(git config --get gerrit.createChangeId)" in
-case "$create_setting" in
   false)
     exit 0
     ;;

hooks/pre-auto-gc

@@ -1,33 +1,25 @@
 #!/bin/sh
+# DO NOT EDIT THIS FILE
+# All updates should be sent upstream: https://github.com/git/git
+# This is synced from commit: 00e10ef10e161a913893b8cb33aa080d4ca5baa6
+# DO NOT EDIT THIS FILE
 #
 # An example hook script to verify if you are on battery, in case you
-# are running Windows, Linux or OS X. Called by git-gc --auto with no
+# are running Linux or OS X. Called by git-gc --auto with no arguments.
-# arguments. The hook should exit with non-zero status after issuing an
+# The hook should exit with non-zero status after issuing an appropriate
-# appropriate message if it wants to stop the auto repacking.
+# message if it wants to stop the auto repacking.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
 #
-# This program is distributed in the hope that it will be useful,
+# This hook is stored in the contrib/hooks directory. Your distribution
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# may have put this somewhere else. If you want to use this hook, you
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# should make this script executable then link to it in the repository
-# GNU General Public License for more details.
+# you would like to use it in.
 #
-# You should have received a copy of the GNU General Public License
+# For example, if the hook is stored in
-# along with this program; if not, write to the Free Software
+# /usr/share/git-core/contrib/hooks/pre-auto-gc-battery:
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
-
+# cd /path/to/your/repository.git
-if uname -s | grep -q "_NT-"
+# ln -sf /usr/share/git-core/contrib/hooks/pre-auto-gc-battery \
-then
+#	hooks/pre-auto-gc
-	if test -x $SYSTEMROOT/System32/Wbem/wmic
-	then
-		STATUS=$(wmic path win32_battery get batterystatus /format:list | tr -d '\r\n')
-		[ "$STATUS" = "BatteryStatus=2" ] && exit 0 || exit 1
-	fi
-	exit 0
-fi
 
 if test -x /sbin/on_ac_power && (/sbin/on_ac_power;test $? -ne 1)
 then
@@ -48,11 +40,6 @@ elif test -x /usr/bin/pmset && /usr/bin/pmset -g batt |
 	grep -q "drawing from 'AC Power'"
 then
 	exit 0
-elif test -d /sys/bus/acpi/drivers/battery && test 0 = \
-  "$(find /sys/bus/acpi/drivers/battery/ -type l | wc -l)";
-then
-	# No battery exists.
-	exit 0
 fi
 
 echo "Auto packing deferred; not on AC"

main.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-#
 # Copyright (C) 2008 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -20,6 +19,7 @@ People shouldn't run this directly; instead, they should use the `repo` wrapper
 which takes care of execing this entry point.
 """
 
+import difflib
 import getpass
 import json
 import netrc
@@ -30,6 +30,7 @@ import signal
 import sys
 import textwrap
 import time
+from typing import Optional
 import urllib.request
 
 from repo_logging import RepoLogger
@@ -45,7 +46,6 @@ from command import InteractiveCommand
 from command import MirrorSafeCommand
 from editor import Editor
 from error import DownloadError
-from error import GitcUnsupportedError
 from error import InvalidProjectGroupsError
 from error import ManifestInvalidRevisionError
 from error import ManifestParseError
@@ -270,10 +270,14 @@ class _Repo:
             self._PrintHelp(short=True)
             return 1
 
-        run = lambda: self._RunLong(name, gopts, argv) or 0
+        git_trace2_event_log = EventLog()
+        run = (
+            lambda: self._RunLong(name, gopts, argv, git_trace2_event_log) or 0
+        )
         with Trace(
-            "starting new command: %s",
+            "starting new command: %s [sid=%s]",
             ", ".join([name] + argv),
+            git_trace2_event_log.full_sid,
             first_trace=True,
         ):
             if gopts.trace_python:
@@ -290,12 +294,107 @@ class _Repo:
                 result = run()
         return result
 
-    def _RunLong(self, name, gopts, argv):
+    def _autocorrect_command_name(
+        self, name: str, config: RepoConfig
+    ) -> Optional[str]:
+        """Autocorrect command name based on user's git config."""
+
+        close_commands = difflib.get_close_matches(
+            name, self.commands.keys(), n=5, cutoff=0.7
+        )
+
+        if not close_commands:
+            logger.error(
+                "repo: '%s' is not a repo command.  See 'repo help'.", name
+            )
+            return None
+
+        assumed = close_commands[0]
+        autocorrect = config.GetString("help.autocorrect")
+
+        # If there are multiple close matches, git won't automatically run one.
+        # We'll always prompt instead of guessing.
+        if len(close_commands) > 1:
+            autocorrect = "prompt"
+
+        # Handle git configuration boolean values:
+        # 0, "false", "off", "no", "show": show suggestion (default)
+        # 1, "true", "on", "yes", "immediate": run suggestion immediately
+        # "never": don't run or show any suggested command
+        # "prompt": show the suggestion and prompt for confirmation
+        # positive number > 1: run suggestion after specified deciseconds
+        if autocorrect is None:
+            autocorrect = "0"
+
+        autocorrect = autocorrect.lower()
+
+        if autocorrect in ("0", "false", "off", "no", "show"):
+            autocorrect = 0
+        elif autocorrect in ("true", "on", "yes", "immediate"):
+            autocorrect = -1  # immediate
+        elif autocorrect == "never":
+            return None
+        elif autocorrect == "prompt":
+            logger.warning(
+                "You called a repo command named "
+                "'%s', which does not exist.",
+                name,
+            )
+            try:
+                resp = input(f"Run '{assumed}' instead [y/N]? ")
+                if resp.lower().startswith("y"):
+                    return assumed
+            except (KeyboardInterrupt, EOFError):
+                pass
+            return None
+        else:
+            try:
+                autocorrect = int(autocorrect)
+            except ValueError:
+                autocorrect = 0
+
+        if autocorrect != 0:
+            if autocorrect < 0:
+                logger.warning(
+                    "You called a repo command named "
+                    "'%s', which does not exist.\n"
+                    "Continuing assuming that "
+                    "you meant '%s'.",
+                    name,
+                    assumed,
+                )
+            else:
+                delay = autocorrect * 0.1
+                logger.warning(
+                    "You called a repo command named "
+                    "'%s', which does not exist.\n"
+                    "Continuing in %.1f seconds, assuming "
+                    "that you meant '%s'.",
+                    name,
+                    delay,
+                    assumed,
+                )
+                try:
+                    time.sleep(delay)
+                except KeyboardInterrupt:
+                    return None
+            return assumed
+
+        logger.error(
+            "repo: '%s' is not a repo command.  See 'repo help'.", name
+        )
+        logger.warning(
+            "The most similar command%s\n\t%s",
+            "s are" if len(close_commands) > 1 else " is",
+            "\n\t".join(close_commands),
+        )
+        return None
+
+    def _RunLong(self, name, gopts, argv, git_trace2_event_log):
         """Execute the (longer running) requested subcommand."""
         result = 0
         SetDefaultColoring(gopts.color)
 
-        git_trace2_event_log = EventLog()
         outer_client = RepoClient(self.repodir)
         repo_client = outer_client
         if gopts.submanifest_path:
@@ -305,24 +404,22 @@ class _Repo:
                 outer_client=outer_client,
             )
 
-        if Wrapper().gitc_parse_clientdir(os.getcwd()):
+        if name not in self.commands:
-            logger.error("GITC is not supported.")
+            corrected_name = self._autocorrect_command_name(
-            raise GitcUnsupportedError()
+                name, outer_client.globalConfig
+            )
+            if not corrected_name:
+                return 1
+            name = corrected_name
 
-        try:
+        cmd = self.commands[name](
-            cmd = self.commands[name](
+            repodir=self.repodir,
-                repodir=self.repodir,
+            client=repo_client,
-                client=repo_client,
+            manifest=repo_client.manifest,
-                manifest=repo_client.manifest,
+            outer_client=outer_client,
-                outer_client=outer_client,
+            outer_manifest=outer_client.manifest,
-                outer_manifest=outer_client.manifest,
+            git_event_log=git_trace2_event_log,
-                git_event_log=git_trace2_event_log,
+        )
-            )
-        except KeyError:
-            logger.error(
-                "repo: '%s' is not a repo command.  See 'repo help'.", name
-            )
-            return 1
 
         Editor.globalConfig = cmd.client.globalConfig
 
@@ -340,6 +437,9 @@ class _Repo:
             )
             return 1
 
+        cmd.CommonValidateOptions(copts, cargs)
+        git_trace2_event_log.verbose = copts.verbose
+
         if gopts.pager is not False and not isinstance(cmd, InteractiveCommand):
             config = cmd.client.globalConfig
             if gopts.pager:
@@ -354,7 +454,7 @@ class _Repo:
         start = time.time()
         cmd_event = cmd.event_log.Add(name, event_log.TASK_COMMAND, start)
         cmd.event_log.SetParent(cmd_event)
-        git_trace2_event_log.StartEvent()
+        git_trace2_event_log.StartEvent(["repo", name] + argv)
         git_trace2_event_log.CommandEvent(name="repo", subcommands=[name])
 
         def execute_command_helper():
@@ -362,7 +462,6 @@ class _Repo:
             Execute the subcommand.
             """
             nonlocal result
-            cmd.CommonValidateOptions(copts, cargs)
             cmd.ValidateOptions(copts, cargs)
 
             this_manifest_only = copts.this_manifest_only
@@ -422,7 +521,7 @@ class _Repo:
                         error_info = json.dumps(
                             {
                                 "ErrorType": type(error).__name__,
-                                "Project": project,
+                                "Project": str(project),
                                 "Message": str(error),
                             }
                         )

man/repo-gc.1

@@ -1,21 +1,28 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "July 2022" "repo gitc-delete" "Repo Manual"
+.TH REPO "1" "April 2025" "repo gc" "Repo Manual"
 .SH NAME
-repo \- repo gitc-delete - manual page for repo gitc-delete
+repo \- repo gc - manual page for repo gc
 .SH SYNOPSIS
 .B repo
-\fI\,gitc-delete\/\fR
+\fI\,gc\/\fR
 .SH DESCRIPTION
 Summary
 .PP
-Delete a GITC Client.
+Cleaning up internal repo and Git state.
 .SH OPTIONS
 .TP
 \fB\-h\fR, \fB\-\-help\fR
 show this help message and exit
 .TP
-\fB\-f\fR, \fB\-\-force\fR
+\fB\-n\fR, \fB\-\-dry\-run\fR
-force the deletion (no prompt)
+do everything except actually delete
+.TP
+\fB\-y\fR, \fB\-\-yes\fR
+answer yes to all safe prompts
+.TP
+\fB\-\-repack\fR
+repack all projects that use partial clone with
+filter=blob:none
 .SS Logging options:
 .TP
 \fB\-v\fR, \fB\-\-verbose\fR
@@ -37,8 +44,4 @@ only operate on this (sub)manifest
 \fB\-\-no\-this\-manifest\-only\fR, \fB\-\-all\-manifests\fR
 operate on this manifest and its submanifests
 .PP
-Run `repo help gitc\-delete` to view the detailed manual.
+Run `repo help gc` to view the detailed manual.
-.SH DETAILS
-.PP
-This subcommand deletes the current GITC client, deleting the GITC manifest and
-all locally downloaded sources.

man/repo-gitc-init.1

@@ -1,175 +0,0 @@
-.\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "October 2022" "repo gitc-init" "Repo Manual"
-.SH NAME
-repo \- repo gitc-init - manual page for repo gitc-init
-.SH SYNOPSIS
-.B repo
-\fI\,gitc-init \/\fR[\fI\,options\/\fR] [\fI\,client name\/\fR]
-.SH DESCRIPTION
-Summary
-.PP
-Initialize a GITC Client.
-.SH OPTIONS
-.TP
-\fB\-h\fR, \fB\-\-help\fR
-show this help message and exit
-.SS Logging options:
-.TP
-\fB\-v\fR, \fB\-\-verbose\fR
-show all output
-.TP
-\fB\-q\fR, \fB\-\-quiet\fR
-only show errors
-.SS Manifest options:
-.TP
-\fB\-u\fR URL, \fB\-\-manifest\-url\fR=\fI\,URL\/\fR
-manifest repository location
-.TP
-\fB\-b\fR REVISION, \fB\-\-manifest\-branch\fR=\fI\,REVISION\/\fR
-manifest branch or revision (use HEAD for default)
-.TP
-\fB\-m\fR NAME.xml, \fB\-\-manifest\-name\fR=\fI\,NAME\/\fR.xml
-initial manifest file
-.TP
-\fB\-g\fR GROUP, \fB\-\-groups\fR=\fI\,GROUP\/\fR
-restrict manifest projects to ones with specified
-group(s) [default|all|G1,G2,G3|G4,\-G5,\-G6]
-.TP
-\fB\-p\fR PLATFORM, \fB\-\-platform\fR=\fI\,PLATFORM\/\fR
-restrict manifest projects to ones with a specified
-platform group [auto|all|none|linux|darwin|...]
-.TP
-\fB\-\-submodules\fR
-sync any submodules associated with the manifest repo
-.TP
-\fB\-\-standalone\-manifest\fR
-download the manifest as a static file rather then
-create a git checkout of the manifest repo
-.TP
-\fB\-\-manifest\-depth\fR=\fI\,DEPTH\/\fR
-create a shallow clone of the manifest repo with given
-depth (0 for full clone); see git clone (default: 0)
-.SS Manifest (only) checkout options:
-.TP
-\fB\-\-current\-branch\fR
-fetch only current manifest branch from server
-(default)
-.TP
-\fB\-\-no\-current\-branch\fR
-fetch all manifest branches from server
-.TP
-\fB\-\-tags\fR
-fetch tags in the manifest
-.TP
-\fB\-\-no\-tags\fR
-don't fetch tags in the manifest
-.SS Checkout modes:
-.TP
-\fB\-\-mirror\fR
-create a replica of the remote repositories rather
-than a client working directory
-.TP
-\fB\-\-archive\fR
-checkout an archive instead of a git repository for
-each project. See git archive.
-.TP
-\fB\-\-worktree\fR
-use git\-worktree to manage projects
-.SS Project checkout optimizations:
-.TP
-\fB\-\-reference\fR=\fI\,DIR\/\fR
-location of mirror directory
-.TP
-\fB\-\-dissociate\fR
-dissociate from reference mirrors after clone
-.TP
-\fB\-\-depth\fR=\fI\,DEPTH\/\fR
-create a shallow clone with given depth; see git clone
-.TP
-\fB\-\-partial\-clone\fR
-perform partial clone (https://gitscm.com/docs/gitrepositorylayout#_code_partialclone_code)
-.TP
-\fB\-\-no\-partial\-clone\fR
-disable use of partial clone (https://gitscm.com/docs/gitrepositorylayout#_code_partialclone_code)
-.TP
-\fB\-\-partial\-clone\-exclude\fR=\fI\,PARTIAL_CLONE_EXCLUDE\/\fR
-exclude the specified projects (a comma\-delimited
-project names) from partial clone (https://gitscm.com/docs/gitrepositorylayout#_code_partialclone_code)
-.TP
-\fB\-\-clone\-filter\fR=\fI\,CLONE_FILTER\/\fR
-filter for use with \fB\-\-partial\-clone\fR [default:
-blob:none]
-.TP
-\fB\-\-use\-superproject\fR
-use the manifest superproject to sync projects;
-implies \fB\-c\fR
-.TP
-\fB\-\-no\-use\-superproject\fR
-disable use of manifest superprojects
-.TP
-\fB\-\-clone\-bundle\fR
-enable use of \fI\,/clone.bundle\/\fP on HTTP/HTTPS (default if
-not \fB\-\-partial\-clone\fR)
-.TP
-\fB\-\-no\-clone\-bundle\fR
-disable use of \fI\,/clone.bundle\/\fP on HTTP/HTTPS (default if
-\fB\-\-partial\-clone\fR)
-.TP
-\fB\-\-git\-lfs\fR
-enable Git LFS support
-.TP
-\fB\-\-no\-git\-lfs\fR
-disable Git LFS support
-.SS repo Version options:
-.TP
-\fB\-\-repo\-url\fR=\fI\,URL\/\fR
-repo repository location ($REPO_URL)
-.TP
-\fB\-\-repo\-rev\fR=\fI\,REV\/\fR
-repo branch or revision ($REPO_REV)
-.TP
-\fB\-\-no\-repo\-verify\fR
-do not verify repo source code
-.SS Other options:
-.TP
-\fB\-\-config\-name\fR
-Always prompt for name/e\-mail
-.SS GITC options:
-.TP
-\fB\-f\fR MANIFEST_FILE, \fB\-\-manifest\-file\fR=\fI\,MANIFEST_FILE\/\fR
-Optional manifest file to use for this GITC client.
-.TP
-\fB\-c\fR GITC_CLIENT, \fB\-\-gitc\-client\fR=\fI\,GITC_CLIENT\/\fR
-Name of the gitc_client instance to create or modify.
-.SS Multi\-manifest:
-.TP
-\fB\-\-outer\-manifest\fR
-operate starting at the outermost manifest
-.TP
-\fB\-\-no\-outer\-manifest\fR
-do not operate on outer manifests
-.TP
-\fB\-\-this\-manifest\-only\fR
-only operate on this (sub)manifest
-.TP
-\fB\-\-no\-this\-manifest\-only\fR, \fB\-\-all\-manifests\fR
-operate on this manifest and its submanifests
-.PP
-Run `repo help gitc\-init` to view the detailed manual.
-.SH DETAILS
-.PP
-The 'repo gitc\-init' command is ran to initialize a new GITC client for use with
-the GITC file system.
-.PP
-This command will setup the client directory, initialize repo, just like repo
-init does, and then downloads the manifest collection and installs it in the
-\&.repo/directory of the GITC client.
-.PP
-Once this is done, a GITC manifest is generated by pulling the HEAD SHA for each
-project and generates the properly formatted XML file and installs it as
-\&.manifest in the GITC client directory.
-.PP
-The \fB\-c\fR argument is required to specify the GITC client name.
-.PP
-The optional \fB\-f\fR argument can be used to specify the manifest file to use for
-this GITC client.

man/repo-init.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "October 2022" "repo init" "Repo Manual"
+.TH REPO "1" "September 2024" "repo init" "Repo Manual"
 .SH NAME
 repo \- repo init - manual page for repo init
 .SH SYNOPSIS
@@ -28,6 +28,11 @@ manifest repository location
 \fB\-b\fR REVISION, \fB\-\-manifest\-branch\fR=\fI\,REVISION\/\fR
 manifest branch or revision (use HEAD for default)
 .TP
+\fB\-\-manifest\-upstream\-branch\fR=\fI\,BRANCH\/\fR
+when a commit is provided to \fB\-\-manifest\-branch\fR, this
+is the name of the git ref in which the commit can be
+found
+.TP
 \fB\-m\fR NAME.xml, \fB\-\-manifest\-name\fR=\fI\,NAME\/\fR.xml
 initial manifest file
 .TP
@@ -163,6 +168,10 @@ The optional \fB\-b\fR argument can be used to select the manifest branch to che
 and use. If no branch is specified, the remote's default branch is used. This is
 equivalent to using \fB\-b\fR HEAD.
 .PP
+The optional \fB\-\-manifest\-upstream\-branch\fR argument can be used when a commit is
+provided to \fB\-\-manifest\-branch\fR (or \fB\-b\fR), to specify the name of the git ref in
+which the commit can be found.
+.PP
 The optional \fB\-m\fR argument can be used to specify an alternate manifest to be
 used. If no manifest is specified, the manifest default.xml will be used.
 .PP

man/repo-manifest.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "October 2022" "repo manifest" "Repo Manual"
+.TH REPO "1" "April 2026" "repo manifest" "Repo Manual"
 .SH NAME
 repo \- repo manifest - manual page for repo manifest
 .SH SYNOPSIS
@@ -30,8 +30,8 @@ if in \fB\-r\fR mode, do not write the dest\-branch field
 (only of use if the branch names for a sha1 manifest
 are sensitive)
 .TP
-\fB\-\-json\fR
+\fB\-\-format\fR=\fI\,FORMAT\/\fR
-output manifest in JSON format (experimental)
+output format: xml, json (default: xml)
 .TP
 \fB\-\-pretty\fR
 format output for humans to read
@@ -78,6 +78,10 @@ set to the ref we were on when the manifest was generated. The 'dest\-branch'
 attribute is set to indicate the remote ref to push changes to via 'repo
 upload'.
 .PP
+Multiple output formats are supported via \fB\-\-format\fR. The default output is XML,
+and formats are generally "condensed". Use \fB\-\-pretty\fR for more human\-readable
+variations.
+.PP
 repo Manifest Format
 .PP
 A repo manifest describes the structure of a repo client; that is the
@@ -127,6 +131,7 @@ include*)>
 <!ATTLIST default dest\-branch CDATA #IMPLIED>
 <!ATTLIST default upstream    CDATA #IMPLIED>
 <!ATTLIST default sync\-j      CDATA #IMPLIED>
+<!ATTLIST default sync\-j\-max  CDATA #IMPLIED>
 <!ATTLIST default sync\-c      CDATA #IMPLIED>
 <!ATTLIST default sync\-s      CDATA #IMPLIED>
 <!ATTLIST default sync\-tags   CDATA #IMPLIED>
@@ -135,7 +140,7 @@ include*)>
 <!ATTLIST manifest\-server url CDATA #REQUIRED>
 .IP
 <!ELEMENT submanifest EMPTY>
-<!ATTLIST submanifest name           ID #REQUIRED>
+<!ATTLIST submanifest name           ID    #REQUIRED>
 <!ATTLIST submanifest remote         IDREF #IMPLIED>
 <!ATTLIST submanifest project        CDATA #IMPLIED>
 <!ATTLIST submanifest manifest\-name  CDATA #IMPLIED>
@@ -160,15 +165,32 @@ IDREF #IMPLIED>
 .TP
 <!ATTLIST project revision
 CDATA #IMPLIED>
+.TP
+<!ATTLIST project dest\-branch
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project groups
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project sync\-c
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project sync\-s
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project sync\-tags
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project upstream
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project clone\-depth
+CDATA #IMPLIED>
+.TP
+<!ATTLIST project force\-path
+CDATA #IMPLIED>
 .IP
-<!ATTLIST project dest\-branch CDATA #IMPLIED>
+<!ATTLIST project sync\-strategy CDATA #IMPLIED>
-<!ATTLIST project groups      CDATA #IMPLIED>
-<!ATTLIST project sync\-c      CDATA #IMPLIED>
-<!ATTLIST project sync\-s      CDATA #IMPLIED>
-<!ATTLIST project sync\-tags   CDATA #IMPLIED>
-<!ATTLIST project upstream CDATA #IMPLIED>
-<!ATTLIST project clone\-depth CDATA #IMPLIED>
-<!ATTLIST project force\-path CDATA #IMPLIED>
 .IP
 <!ELEMENT annotation EMPTY>
 <!ATTLIST annotation name  CDATA #REQUIRED>
@@ -180,25 +202,43 @@ CDATA #IMPLIED>
 <!ATTLIST copyfile dest CDATA #REQUIRED>
 .IP
 <!ELEMENT linkfile EMPTY>
-<!ATTLIST linkfile src CDATA #REQUIRED>
+<!ATTLIST linkfile src  CDATA #REQUIRED>
 <!ATTLIST linkfile dest CDATA #REQUIRED>
+.TP
+<!ELEMENT extend\-project (annotation*,
+copyfile*,
+linkfile*)>
+.TP
+<!ATTLIST extend\-project name
+CDATA #REQUIRED>
+.TP
+<!ATTLIST extend\-project path
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project dest\-path
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project groups
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project revision
+CDATA #IMPLIED>
+.TP
+<!ATTLIST extend\-project remote
+CDATA #IMPLIED>
 .IP
-<!ELEMENT extend\-project EMPTY>
-<!ATTLIST extend\-project name CDATA #REQUIRED>
-<!ATTLIST extend\-project path CDATA #IMPLIED>
-<!ATTLIST extend\-project dest\-path CDATA #IMPLIED>
-<!ATTLIST extend\-project groups CDATA #IMPLIED>
-<!ATTLIST extend\-project revision CDATA #IMPLIED>
-<!ATTLIST extend\-project remote CDATA #IMPLIED>
 <!ATTLIST extend\-project dest\-branch CDATA #IMPLIED>
-<!ATTLIST extend\-project upstream CDATA #IMPLIED>
+<!ATTLIST extend\-project upstream    CDATA #IMPLIED>
+<!ATTLIST extend\-project base\-rev    CDATA #IMPLIED>
 .IP
 <!ELEMENT remove\-project EMPTY>
-<!ATTLIST remove\-project name  CDATA #REQUIRED>
+<!ATTLIST remove\-project name     CDATA #IMPLIED>
-<!ATTLIST remove\-project optional  CDATA #IMPLIED>
+<!ATTLIST remove\-project path     CDATA #IMPLIED>
+<!ATTLIST remove\-project optional CDATA #IMPLIED>
+<!ATTLIST remove\-project base\-rev CDATA #IMPLIED>
 .IP
 <!ELEMENT repo\-hooks EMPTY>
-<!ATTLIST repo\-hooks in\-project CDATA #REQUIRED>
+<!ATTLIST repo\-hooks in\-project   CDATA #REQUIRED>
 <!ATTLIST repo\-hooks enabled\-list CDATA #REQUIRED>
 .IP
 <!ELEMENT superproject EMPTY>
@@ -207,11 +247,12 @@ CDATA #IMPLIED>
 <!ATTLIST superproject revision CDATA #IMPLIED>
 .IP
 <!ELEMENT contactinfo EMPTY>
-<!ATTLIST contactinfo bugurl  CDATA #REQUIRED>
+<!ATTLIST contactinfo bugurl CDATA #REQUIRED>
 .IP
 <!ELEMENT include EMPTY>
-<!ATTLIST include name   CDATA #REQUIRED>
+<!ATTLIST include name     CDATA #REQUIRED>
-<!ATTLIST include groups CDATA #IMPLIED>
+<!ATTLIST include groups   CDATA #IMPLIED>
+<!ATTLIST include revision CDATA #IMPLIED>
 .PP
 ]>
 ```
@@ -286,7 +327,9 @@ when syncing a revision locked manifest in \fB\-c\fR mode to avoid having to syn
 entire ref space. Project elements not setting their own `upstream` will inherit
 this value.
 .PP
-Attribute `sync\-j`: Number of parallel jobs to use when synching.
+Attribute `sync\-j`: Number of parallel jobs to use when syncing.
+.PP
+Attribute `sync\-j\-max`: Maximum number of parallel jobs to use when syncing.
 .PP
 Attribute `sync\-c`: Set to true to only sync the given Git branch (specified in
 the `revision` attribute) rather than the whole ref space. Project elements
@@ -302,25 +345,7 @@ Element manifest\-server
 At most one manifest\-server may be specified. The url attribute is used to
 specify the URL of a manifest server, which is an XML RPC service.
 .PP
-The manifest server should implement the following RPC methods:
+See the [smart sync documentation](./smart\-sync.md) for more details.
-.IP
-GetApprovedManifest(branch, target)
-.PP
-Return a manifest in which each project is pegged to a known good revision for
-the current branch and target. This is used by repo sync when the \fB\-\-smart\-sync\fR
-option is given.
-.PP
-The target to use is defined by environment variables TARGET_PRODUCT and
-TARGET_BUILD_VARIANT. These variables are used to create a string of the form
-$TARGET_PRODUCT\-$TARGET_BUILD_VARIANT, e.g. passion\-userdebug. If one of those
-variables or both are not present, the program will call GetApprovedManifest
-without the target parameter and the manifest server should choose a reasonable
-default target.
-.IP
-GetManifest(tag)
-.PP
-Return a manifest in which each project is pegged to the revision at the
-specified tag. This is used by repo sync when the \fB\-\-smart\-tag\fR option is given.
 .PP
 Element submanifest
 .PP
@@ -372,7 +397,7 @@ supplied, `revision` is used.
 .PP
 `path` may not be an absolute path or use "." or ".." path components.
 .PP
-Attribute `groups`: List of additional groups to which all projects in the
+Attribute `groups`: Set of additional groups to which all projects in the
 included submanifest belong. This appends and recurses, meaning all projects in
 submanifests carry all parent submanifest groups. Same syntax as the
 corresponding element of `project`.
@@ -434,7 +459,7 @@ Attribute `dest\-branch`: Name of a Git branch (e.g. `main`). When using `repo
 upload`, changes will be submitted for code review on this branch. If
 unspecified both here and in the default element, `revision` is used instead.
 .PP
-Attribute `groups`: List of groups to which this project belongs, whitespace or
+Attribute `groups`: Set of groups to which this project belongs, whitespace or
 comma separated. All projects belong to the group "all", and each project
 automatically belongs to a group of its name:`name` and path:`path`. E.g. for
 `<project name="monkeys" path="barrel\-of"/>`, that project definition is
@@ -461,6 +486,21 @@ mirror repository according to its `path` attribute (if supplied) rather than
 the `name` attribute. This attribute only applies to the local mirrors syncing,
 it will be ignored when syncing the projects in a client working directory.
 .PP
+Attribute `sync\-strategy`: Set the sync strategy used when fetching this
+project. Currently the only supported value is `stateless`. When set to
+`stateless`, repo will run a reflog expiration and aggressive garbage collection
+at the end of the sync process. This is useful for projects that contain large
+binary files and use `clone\-depth="1"`, where garbage can accumulate as binaries
+are added, deleted, or modified across successive syncs.
+.PP
+During a stateless sync, repo checks the following before cleaning up: 1. The
+project does not share an object directory with other projects. 2. The working
+tree is clean (no uncommitted changes, no untracked files). 3. There are no
+unpushed local commits. 4. There is no Git stash.
+.PP
+If any of these conditions are not met, repo falls back to a standard sync
+without garbage collection.
+.PP
 Element extend\-project
 .PP
 Modify the attributes of the named project.
@@ -470,6 +510,11 @@ of an existing project without completely replacing the existing project
 definition. This makes the local manifest more robust against changes to the
 original manifest.
 .PP
+The `extend\-project` element can also contain `annotation`, `copyfile`, and
+`linkfile` child elements. These are added to the project's definition. A
+`copyfile` or `linkfile` with a `dest` that already exists in the project will
+overwrite the original.
+.PP
 Attribute `path`: If specified, limit the change to projects checked out at the
 specified path, rather than all projects with the given name.
 .PP
@@ -478,8 +523,8 @@ repo client where the Git working directory for this project should be placed.
 This is used to move a project in the checkout by overriding the existing `path`
 setting.
 .PP
-Attribute `groups`: List of additional groups to which this project belongs.
+Attribute `groups`: Set of additional groups to which this project belongs. Same
-Same syntax as the corresponding element of `project`.
+syntax as the corresponding element of `project`.
 .PP
 Attribute `revision`: If specified, overrides the revision of the original
 project. Same syntax as the corresponding element of `project`.
@@ -493,21 +538,31 @@ project. Same syntax as the corresponding element of `project`.
 Attribute `upstream`: If specified, overrides the upstream of the original
 project. Same syntax as the corresponding element of `project`.
 .PP
+Attribute `base\-rev`: If specified, adds a check against the revision to be
+extended. Manifest parse will fail and give a list of mismatch extends if the
+revisions being extended have changed since base\-rev was set. Intended for use
+with layered manifests using hash revisions to prevent patch branches hiding
+newer upstream revisions. Also compares named refs like branches or tags but is
+misleading if branches are used as base\-rev. Same syntax as the corresponding
+element of `project`.
+.PP
 Element annotation
 .PP
-Zero or more annotation elements may be specified as children of a project or
+Zero or more annotation elements may be specified as children of a project
-remote element. Each element describes a name\-value pair. For projects, this
+element, an extend\-project element, or a remote element. Each element describes
-name\-value pair will be exported into each project's environment during a
+a name\-value pair. For projects, this name\-value pair will be exported into each
-\&'forall' command, prefixed with `REPO__`. In addition, there is an optional
+project's environment during a 'forall' command, prefixed with `REPO__`. In
-attribute "keep" which accepts the case insensitive values "true" (default) or
+addition, there is an optional attribute "keep" which accepts the case
-"false". This attribute determines whether or not the annotation will be kept
+insensitive values "true" (default) or "false". This attribute determines
-when exported with the manifest subcommand.
+whether or not the annotation will be kept when exported with the manifest
+subcommand.
 .PP
 Element copyfile
 .PP
 Zero or more copyfile elements may be specified as children of a project
-element. Each element describes a src\-dest pair of files; the "src" file will be
+element, or an extend\-project element. Each element describes a src\-dest pair of
-copied to the "dest" place during `repo sync` command.
+files; the "src" file will be copied to the "dest" place during `repo sync`
+command.
 .PP
 "src" is project relative, "dest" is relative to the top of the tree. Copying
 from paths outside of the project or to paths outside of the repo client is not
@@ -518,10 +573,14 @@ Intermediate paths must not be symlinks either.
 .PP
 Parent directories of "dest" will be automatically created if missing.
 .PP
+The files are copied in the order they are specified in the manifests. If
+multiple elements specify the same source and destination, they will only be
+applied as one, based on the first occurence. Files are copied before any links
+specified via linkfile elements are created.
+.PP
 Element linkfile
 .PP
-It's just like copyfile and runs at the same time as copyfile but instead of
+It's just like copyfile, but instead of copying it creates a symlink.
-copying it creates a symlink.
 .PP
 The symlink is created at "dest" (relative to the top of the tree) and points to
 the path specified by "src" which is a path in the project.
@@ -531,18 +590,42 @@ Parent directories of "dest" will be automatically created if missing.
 The symlink target may be a file or directory, but it may not point outside of
 the repo client.
 .PP
+The links are created in the order they are specified in the manifests. If
+multiple elements specify the same source and destination, they will only be
+applied as one, based on the first occurence. Links are created after any files
+specified via copyfile elements are copied.
+.PP
 Element remove\-project
 .PP
-Deletes the named project from the internal manifest table, possibly allowing a
+Deletes a project from the internal manifest table, possibly allowing a
 subsequent project element in the same manifest file to replace the project with
 a different source.
 .PP
 This element is mostly useful in a local manifest file, where the user can
 remove a project, and possibly replace it with their own definition.
 .PP
+The project `name` or project `path` can be used to specify the remove target
+meaning one of them is required. If only name is specified, all projects with
+that name are removed.
+.PP
+If both name and path are specified, only projects with the same name and path
+are removed, meaning projects with the same name but in other locations are
+kept.
+.PP
+If only path is specified, a matching project is removed regardless of its name.
+Logic otherwise behaves like both are specified.
+.PP
 Attribute `optional`: Set to true to ignore remove\-project elements with no
 matching `project` element.
 .PP
+Attribute `base\-rev`: If specified, adds a check against the revision to be
+removed. Manifest parse will fail and give a list of mismatch removes if the
+revisions being removed have changed since base\-rev was set. Intended for use
+with layered manifests using hash revisions to prevent patch branches hiding
+newer upstream revisions. Also compares named refs like branches or tags but is
+misleading if branches are used as base\-rev. Same syntax as the corresponding
+element of `project`.
+.PP
 Element repo\-hooks
 .PP
 NB: See the [practical documentation](./repo\-hooks.md) for using repo hooks.
@@ -603,12 +686,18 @@ repository's root.
 "name" may not be an absolute path or use "." or ".." path components. These
 restrictions are not enforced for [Local Manifests].
 .PP
-Attribute `groups`: List of additional groups to which all projects in the
+Attribute `groups`: Set of additional groups to which all projects in the
 included manifest belong. This appends and recurses, meaning all projects in
-included manifests carry all parent include groups. Same syntax as the
+included manifests carry all parent include groups. This also applies to all
+extend\-project elements in the included manifests. Same syntax as the
 corresponding element of `project`.
 .PP
-Local Manifests 
+Attribute `revision`: Name of a Git branch (e.g. `main` or `refs/heads/main`)
+default to which all projects in the included manifest belong. This recurses,
+meaning it will apply to all projects in all manifests included as a result of
+this element.
+.PP
+Local Manifests
 .PP
 Additional remotes and projects may be added through local manifest files stored
 in `$TOP_DIR/.repo/local_manifests/*.xml`.

man/repo-smartsync.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "November 2022" "repo smartsync" "Repo Manual"
+.TH REPO "1" "August 2025" "repo smartsync" "Repo Manual"
 .SH NAME
 repo \- repo smartsync - manual page for repo smartsync
 .SH SYNOPSIS
@@ -20,11 +20,11 @@ number of CPU cores)
 .TP
 \fB\-\-jobs\-network\fR=\fI\,JOBS\/\fR
 number of network jobs to run in parallel (defaults to
-\fB\-\-jobs\fR or 1)
+\fB\-\-jobs\fR or 1). Ignored unless \fB\-\-no\-interleaved\fR is set
 .TP
 \fB\-\-jobs\-checkout\fR=\fI\,JOBS\/\fR
 number of local checkout jobs to run in parallel
-(defaults to \fB\-\-jobs\fR or 8)
+(defaults to \fB\-\-jobs\fR or 8). Ignored unless \fB\-\-nointerleaved\fR is set
 .TP
 \fB\-f\fR, \fB\-\-force\-broken\fR
 obsolete option (to be deleted in the future)
@@ -37,11 +37,20 @@ overwrite an existing git directory if it needs to
 point to a different object directory. WARNING: this
 may cause loss of data
 .TP
+\fB\-\-force\-checkout\fR
+force checkout even if it results in throwing away
+uncommitted modifications. WARNING: this may cause
+loss of data
+.TP
 \fB\-\-force\-remove\-dirty\fR
 force remove projects with uncommitted modifications
 if projects no longer exist in the manifest. WARNING:
 this may cause loss of data
 .TP
+\fB\-\-rebase\fR
+rebase local commits regardless of whether they are
+published
+.TP
 \fB\-l\fR, \fB\-\-local\-only\fR
 only update working tree, don't fetch
 .TP
@@ -49,6 +58,12 @@ only update working tree, don't fetch
 use the existing manifest checkout as\-is. (do not
 update to the latest revision)
 .TP
+\fB\-\-interleaved\fR
+fetch and checkout projects in parallel (default)
+.TP
+\fB\-\-no\-interleaved\fR
+fetch and checkout projects in phases
+.TP
 \fB\-n\fR, \fB\-\-network\-only\fR
 fetch only, don't update working tree
 .TP
@@ -136,6 +151,16 @@ operate on this manifest and its submanifests
 .TP
 \fB\-\-no\-repo\-verify\fR
 do not verify repo source code
+.SS post\-sync hooks:
+.TP
+\fB\-\-no\-verify\fR
+Do not run the post\-sync hook.
+.TP
+\fB\-\-verify\fR
+Run the post\-sync hook without prompting.
+.TP
+\fB\-\-ignore\-hooks\fR
+Do not abort if post\-sync hooks fail.
 .PP
 Run `repo help smartsync` to view the detailed manual.
 .SH DETAILS

man/repo-sync.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "November 2022" "repo sync" "Repo Manual"
+.TH REPO "1" "August 2025" "repo sync" "Repo Manual"
 .SH NAME
 repo \- repo sync - manual page for repo sync
 .SH SYNOPSIS
@@ -20,11 +20,11 @@ number of CPU cores)
 .TP
 \fB\-\-jobs\-network\fR=\fI\,JOBS\/\fR
 number of network jobs to run in parallel (defaults to
-\fB\-\-jobs\fR or 1)
+\fB\-\-jobs\fR or 1). Ignored unless \fB\-\-no\-interleaved\fR is set
 .TP
 \fB\-\-jobs\-checkout\fR=\fI\,JOBS\/\fR
 number of local checkout jobs to run in parallel
-(defaults to \fB\-\-jobs\fR or 8)
+(defaults to \fB\-\-jobs\fR or 8). Ignored unless \fB\-\-nointerleaved\fR is set
 .TP
 \fB\-f\fR, \fB\-\-force\-broken\fR
 obsolete option (to be deleted in the future)
@@ -37,11 +37,20 @@ overwrite an existing git directory if it needs to
 point to a different object directory. WARNING: this
 may cause loss of data
 .TP
+\fB\-\-force\-checkout\fR
+force checkout even if it results in throwing away
+uncommitted modifications. WARNING: this may cause
+loss of data
+.TP
 \fB\-\-force\-remove\-dirty\fR
 force remove projects with uncommitted modifications
 if projects no longer exist in the manifest. WARNING:
 this may cause loss of data
 .TP
+\fB\-\-rebase\fR
+rebase local commits regardless of whether they are
+published
+.TP
 \fB\-l\fR, \fB\-\-local\-only\fR
 only update working tree, don't fetch
 .TP
@@ -49,6 +58,12 @@ only update working tree, don't fetch
 use the existing manifest checkout as\-is. (do not
 update to the latest revision)
 .TP
+\fB\-\-interleaved\fR
+fetch and checkout projects in parallel (default)
+.TP
+\fB\-\-no\-interleaved\fR
+fetch and checkout projects in phases
+.TP
 \fB\-n\fR, \fB\-\-network\-only\fR
 fetch only, don't update working tree
 .TP
@@ -143,6 +158,16 @@ operate on this manifest and its submanifests
 .TP
 \fB\-\-no\-repo\-verify\fR
 do not verify repo source code
+.SS post\-sync hooks:
+.TP
+\fB\-\-no\-verify\fR
+Do not run the post\-sync hook.
+.TP
+\fB\-\-verify\fR
+Run the post\-sync hook without prompting.
+.TP
+\fB\-\-ignore\-hooks\fR
+Do not abort if post\-sync hooks fail.
 .PP
 Run `repo help sync` to view the detailed manual.
 .SH DETAILS
@@ -185,6 +210,11 @@ The \fB\-\-force\-sync\fR option can be used to overwrite existing git directori
 they have previously been linked to a different object directory. WARNING: This
 may cause data to be lost since refs may be removed when overwriting.
 .PP
+The \fB\-\-force\-checkout\fR option can be used to force git to switch revs even if the
+index or the working tree differs from HEAD, and if there are untracked files.
+WARNING: This may cause data to be lost since uncommitted changes may be
+removed.
+.PP
 The \fB\-\-force\-remove\-dirty\fR option can be used to remove previously used projects
 with uncommitted changes. WARNING: This may cause data to be lost since
 uncommitted changes may be removed with projects that no longer exist in the

man/repo-upload.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "August 2022" "repo upload" "Repo Manual"
+.TH REPO "1" "June 2024" "repo upload" "Repo Manual"
 .SH NAME
 repo \- repo upload - manual page for repo upload
 .SH SYNOPSIS
@@ -18,8 +18,11 @@ show this help message and exit
 number of jobs to run in parallel (default: based on
 number of CPU cores)
 .TP
-\fB\-t\fR
+\fB\-t\fR, \fB\-\-topic\-branch\fR
-send local branch name to Gerrit Code Review
+set the topic to the local branch name
+.TP
+\fB\-\-topic\fR=\fI\,TOPIC\/\fR
+set topic for the change
 .TP
 \fB\-\-hashtag\fR=\fI\,HASHTAGS\/\fR, \fB\-\-ht\fR=\fI\,HASHTAGS\/\fR
 add hashtags (comma delimited) to the review
@@ -30,6 +33,9 @@ add local branch name as a hashtag
 \fB\-l\fR LABELS, \fB\-\-label\fR=\fI\,LABELS\/\fR
 add a label when uploading
 .TP
+\fB\-\-pd\fR=\fI\,PATCHSET_DESCRIPTION\/\fR, \fB\-\-patchset\-description\fR=\fI\,PATCHSET_DESCRIPTION\/\fR
+description for patchset
+.TP
 \fB\-\-re\fR=\fI\,REVIEWERS\/\fR, \fB\-\-reviewers\fR=\fI\,REVIEWERS\/\fR
 request reviews from these people
 .TP
@@ -198,6 +204,12 @@ review.URL.uploadnotify:
 Control e\-mail notifications when uploading.
 https://gerrit\-review.googlesource.com/Documentation/user\-upload.html#notify
 .PP
+review.URL.uploadwarningthreshold:
+.PP
+Repo will warn you if you are attempting to upload a large number of commits in
+one or more branches. By default, the threshold is five commits. This option
+allows you to override the warning threshold to a different value.
+.PP
 References
 .PP
 Gerrit Code Review: https://www.gerritcodereview.com/

man/repo-wipe.1

@@ -0,0 +1,61 @@
+.\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
+.TH REPO "1" "November 2025" "repo wipe" "Repo Manual"
+.SH NAME
+repo \- repo wipe - manual page for repo wipe
+.SH SYNOPSIS
+.B repo
+\fI\,wipe <project>\/\fR...
+.SH DESCRIPTION
+Summary
+.PP
+Wipe projects from the worktree
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+show this help message and exit
+.TP
+\fB\-f\fR, \fB\-\-force\fR
+force wipe shared projects and uncommitted changes
+.TP
+\fB\-\-force\-uncommitted\fR
+force wipe even if there are uncommitted changes
+.TP
+\fB\-\-force\-shared\fR
+force wipe even if the project shares an object
+directory
+.SS Logging options:
+.TP
+\fB\-v\fR, \fB\-\-verbose\fR
+show all output
+.TP
+\fB\-q\fR, \fB\-\-quiet\fR
+only show errors
+.SS Multi\-manifest options:
+.TP
+\fB\-\-outer\-manifest\fR
+operate starting at the outermost manifest
+.TP
+\fB\-\-no\-outer\-manifest\fR
+do not operate on outer manifests
+.TP
+\fB\-\-this\-manifest\-only\fR
+only operate on this (sub)manifest
+.TP
+\fB\-\-no\-this\-manifest\-only\fR, \fB\-\-all\-manifests\fR
+operate on this manifest and its submanifests
+.PP
+Run `repo help wipe` to view the detailed manual.
+.SH DETAILS
+.PP
+The 'repo wipe' command removes the specified projects from the worktree (the
+checked out source code) and deletes the project's git data from `.repo`.
+.PP
+This is a destructive operation and cannot be undone.
+.PP
+Projects can be specified either by name, or by a relative or absolute path to
+the project's local directory.
+.SH EXAMPLES
+.SS # Wipe the project "platform/build" by name:
+$ repo wipe platform/build
+.SS # Wipe the project at the path "build/make":
+$ repo wipe build/make

man/repo.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "June 2023" "repo" "Repo Manual"
+.TH REPO "1" "November 2025" "repo" "Repo Manual"
 .SH NAME
 repo \- repository management tool built on top of git
 .SH SYNOPSIS
@@ -79,11 +79,8 @@ Download and checkout a change
 forall
 Run a shell command in each project
 .TP
-gitc\-delete
+gc
-Delete a GITC Client.
+Cleaning up internal repo and Git state.
-.TP
-gitc\-init
-Initialize a GITC Client.
 .TP
 grep
 Print lines matching a pattern
@@ -135,6 +132,9 @@ Upload changes for code review
 .TP
 version
 Display the version of repo
+.TP
+wipe
+Wipe projects from the worktree
 .PP
 See 'repo help <command>' for more information on a specific command.
 Bug reports: https://issues.gerritcodereview.com/issues/new?component=1370071

manifest_xml.py

@@ -133,8 +133,8 @@ def normalize_url(url: str) -> str:
     url = url.rstrip("/")
     parsed_url = urllib.parse.urlparse(url)
 
-    # This matches patterns like "git@github.com:foo/bar".
+    # This matches patterns like "git@github.com:foo".
-    scp_like_url_re = r"^[^:]+@[^:]+:[^/]+/"
+    scp_like_url_re = r"^[^/:]+@[^/:]+:[^/]+"
 
     # If our URL is missing a schema and matches git's
     # SCP-like syntax we should convert it to a proper
@@ -155,6 +155,7 @@ class _Default:
     upstreamExpr = None
     remote = None
     sync_j = None
+    sync_j_max = None
     sync_c = False
     sync_s = False
     sync_tags = True
@@ -255,7 +256,7 @@ class _XmlSubmanifest:
       project: a string, the name of the manifest project.
       revision: a string, the commitish.
       manifestName: a string, the submanifest file name.
-      groups: a list of strings, the groups to add to all projects in the
+      groups: a set of strings, the groups to add to all projects in the
           submanifest.
       default_groups: a list of strings, the default groups to sync.
       path: a string, the relative path for the submanifest checkout.
@@ -281,7 +282,7 @@ class _XmlSubmanifest:
         self.project = project
         self.revision = revision
         self.manifestName = manifestName
-        self.groups = groups
+        self.groups = groups or set()
         self.default_groups = default_groups
         self.path = path
         self.parent = parent
@@ -304,7 +305,7 @@ class _XmlSubmanifest:
         self.repo_client = RepoClient(
             parent.repodir,
             linkFile,
-            parent_groups=",".join(groups) or "",
+            parent_groups=groups,
             submanifest_path=os.path.join(parent.path_prefix, self.relpath),
             outer_client=outer_client,
             default_groups=default_groups,
@@ -345,7 +346,7 @@ class _XmlSubmanifest:
         manifestName = self.manifestName or "default.xml"
         revision = self.revision or self.name
         path = self.path or revision.split("/")[-1]
-        groups = self.groups or []
+        groups = self.groups
 
         return SubmanifestSpec(
             self.name, manifestUrl, manifestName, revision, path, groups
@@ -359,9 +360,7 @@ class _XmlSubmanifest:
 
     def GetGroupsStr(self):
         """Returns the `groups` given for this submanifest."""
-        if self.groups:
+        return ",".join(sorted(self.groups))
-            return ",".join(self.groups)
-        return ""
 
     def GetDefaultGroupsStr(self):
         """Returns the `default-groups` given for this submanifest."""
@@ -381,7 +380,7 @@ class SubmanifestSpec:
         self.manifestName = manifestName
         self.revision = revision
         self.path = path
-        self.groups = groups or []
+        self.groups = groups
 
 
 class XmlManifest:
@@ -393,7 +392,7 @@ class XmlManifest:
         manifest_file,
         local_manifests=None,
         outer_client=None,
-        parent_groups="",
+        parent_groups=None,
         submanifest_path="",
         default_groups=None,
     ):
@@ -409,7 +408,8 @@ class XmlManifest:
                 manifests. This will usually be
                 |repodir|/|LOCAL_MANIFESTS_DIR_NAME|.
             outer_client: RepoClient of the outer manifest.
-            parent_groups: a string, the groups to apply to this projects.
+            parent_groups: a set of strings, the groups to apply to this
+                manifest.
             submanifest_path: The submanifest root relative to the repo root.
             default_groups: a string, the default manifest groups to use.
         """
@@ -432,14 +432,9 @@ class XmlManifest:
             self.manifestFileOverrides = {}
         self.local_manifests = local_manifests
         self._load_local_manifests = True
-        self.parent_groups = parent_groups
+        self.parent_groups = parent_groups or set()
         self.default_groups = default_groups
 
-        if outer_client and self.isGitcClient:
-            raise ManifestParseError(
-                "Multi-manifest is incompatible with `gitc-init`"
-            )
-
         if submanifest_path and not outer_client:
             # If passing a submanifest_path, there must be an outer_client.
             raise ManifestParseError(f"Bad call to {self.__class__.__name__}")
@@ -572,21 +567,29 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         """
         return [x for x in re.split(r"[,\s]+", field) if x]
 
+    def _ParseSet(self, field):
+        """Parse fields that contain flattened sets.
+
+        These are whitespace & comma separated.  Empty elements will be
+        discarded.
+        """
+        return set(self._ParseList(field))
+
     def ToXml(
         self,
         peg_rev=False,
         peg_rev_upstream=True,
         peg_rev_dest_branch=True,
-        groups=None,
+        filter_groups=None,
         omit_local=False,
     ):
         """Return the current manifest XML."""
         mp = self.manifestProject
 
-        if groups is None:
+        if filter_groups is None:
-            groups = mp.manifest_groups
+            filter_groups = mp.manifest_groups
-        if groups:
+        if filter_groups:
-            groups = self._ParseList(groups)
+            filter_groups = self._ParseList(filter_groups)
 
         doc = xml.dom.minidom.Document()
         root = doc.createElement("manifest")
@@ -629,6 +632,9 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         if d.sync_j is not None:
             have_default = True
             e.setAttribute("sync-j", "%d" % d.sync_j)
+        if d.sync_j_max is not None:
+            have_default = True
+            e.setAttribute("sync-j-max", "%d" % d.sync_j_max)
         if d.sync_c:
             have_default = True
             e.setAttribute("sync-c", "true")
@@ -659,7 +665,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                     output_project(parent, parent_node, project)
 
         def output_project(parent, parent_node, p):
-            if not p.MatchesGroups(groups):
+            if not p.MatchesGroups(filter_groups):
                 return
 
             if omit_local and self.IsFromLocalManifest(p):
@@ -730,10 +736,9 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 le.setAttribute("dest", lf.dest)
                 e.appendChild(le)
 
-            default_groups = ["all", "name:%s" % p.name, "path:%s" % p.relpath]
+            groups = p.groups - {"all", f"name:{p.name}", f"path:{p.relpath}"}
-            egroups = [g for g in p.groups if g not in default_groups]
+            if groups:
-            if egroups:
+                e.setAttribute("groups", ",".join(sorted(groups)))
-                e.setAttribute("groups", ",".join(egroups))
 
             for a in p.annotations:
                 if a.keep == "true":
@@ -754,14 +759,17 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             if p.clone_depth:
                 e.setAttribute("clone-depth", str(p.clone_depth))
 
+            if p.sync_strategy:
+                e.setAttribute("sync-strategy", str(p.sync_strategy))
+
             self._output_manifest_project_extras(p, e)
 
             if p.subprojects:
                 subprojects = {subp.name for subp in p.subprojects}
-                output_projects(p, e, list(sorted(subprojects)))
+                output_projects(p, e, sorted(subprojects))
 
         projects = {p.name for p in self._paths.values() if not p.parent}
-        output_projects(None, root, list(sorted(projects)))
+        output_projects(None, root, sorted(projects))
 
         if self._repo_hooks_project:
             root.appendChild(doc.createTextNode(""))
@@ -818,7 +826,6 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             "submanifest",
             # These are children of 'project' nodes.
             "annotation",
-            "project",
             "copyfile",
             "linkfile",
         }
@@ -1019,9 +1026,9 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
 
     def SetManifestOverride(self, path):
         """Override manifestFile.  The caller must call Unload()"""
-        self._outer_client.manifest.manifestFileOverrides[
+        self._outer_client.manifest.manifestFileOverrides[self.path_prefix] = (
-            self.path_prefix
+            path
-        ] = path
+        )
 
     @property
     def UseLocalManifests(self):
@@ -1121,7 +1128,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             groups += f",platform-{platform.system().lower()}"
         return groups
 
-    def GetGroupsStr(self):
+    def GetManifestGroupsStr(self):
         """Returns the manifest group string that should be synced."""
         return (
             self.manifestProject.manifest_groups or self.GetDefaultGroupsStr()
@@ -1176,12 +1183,12 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                     b = b[len(R_HEADS) :]
                 self.branch = b
 
-                parent_groups = self.parent_groups
+                parent_groups = self.parent_groups.copy()
                 if self.path_prefix:
-                    parent_groups = (
+                    parent_groups |= {
                         f"{SUBMANIFEST_GROUP_PREFIX}:path:"
-                        f"{self.path_prefix},{parent_groups}"
+                        f"{self.path_prefix}"
-                    )
+                    }
 
                 # The manifestFile was specified by the user which is why we
                 # allow include paths to point anywhere.
@@ -1207,16 +1214,16 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                                 # Since local manifests are entirely managed by
                                 # the user, allow them to point anywhere the
                                 # user wants.
-                                local_group = (
+                                local_group = {
                                     f"{LOCAL_MANIFEST_GROUP_PREFIX}:"
                                     f"{local_file[:-4]}"
-                                )
+                                }
                                 nodes.append(
                                     self._ParseManifestXml(
                                         local,
                                         self.subdir,
                                         parent_groups=(
-                                            f"{local_group},{parent_groups}"
+                                            local_group | parent_groups
                                         ),
                                         restrict_includes=False,
                                     )
@@ -1267,7 +1274,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         self,
         path,
         include_root,
-        parent_groups="",
+        parent_groups=None,
         restrict_includes=True,
         parent_node=None,
     ):
@@ -1276,11 +1283,11 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         Args:
             path: The XML file to read & parse.
             include_root: The path to interpret include "name"s relative to.
-            parent_groups: The groups to apply to this projects.
+            parent_groups: The set of groups to apply to this manifest.
             restrict_includes: Whether to constrain the "name" attribute of
                 includes.
-            parent_node: The parent include node, to apply attribute to this
+            parent_node: The parent include node, to apply attributes to this
-                projects.
+                manifest.
 
         Returns:
             List of XML nodes.
@@ -1304,6 +1311,14 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
 
         nodes = []
         for node in manifest.childNodes:
+            if (
+                parent_node
+                and node.nodeName in ("include", "project")
+                and not node.hasAttribute("revision")
+            ):
+                node.setAttribute(
+                    "revision", parent_node.getAttribute("revision")
+                )
             if node.nodeName == "include":
                 name = self._reqatt(node, "name")
                 if restrict_includes:
@@ -1312,12 +1327,10 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                         raise ManifestInvalidPathError(
                             f'<include> invalid "name": {name}: {msg}'
                         )
-                include_groups = ""
+                include_groups = (parent_groups or set()).copy()
-                if parent_groups:
-                    include_groups = parent_groups
                 if node.hasAttribute("groups"):
-                    include_groups = (
+                    include_groups |= self._ParseSet(
-                        node.getAttribute("groups") + "," + include_groups
+                        node.getAttribute("groups")
                     )
                 fp = os.path.join(include_root, name)
                 if not os.path.isfile(fp):
@@ -1333,33 +1346,23 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                     )
                 # should isolate this to the exact exception, but that's
                 # tricky.  actual parsing implementation may vary.
-                except (
+                except (RuntimeError, ManifestParseError):
-                    KeyboardInterrupt,
-                    RuntimeError,
-                    SystemExit,
-                    ManifestParseError,
-                ):
                     raise
                 except Exception as e:
                     raise ManifestParseError(
                         f"failed parsing included manifest {name}: {e}"
                     )
             else:
-                if parent_groups and node.nodeName == "project":
+                if parent_groups and node.nodeName in (
-                    nodeGroups = parent_groups
+                    "project",
-                    if node.hasAttribute("groups"):
+                    "extend-project",
-                        nodeGroups = (
-                            node.getAttribute("groups") + "," + nodeGroups
-                        )
-                    node.setAttribute("groups", nodeGroups)
-                if (
-                    parent_node
-                    and node.nodeName == "project"
-                    and not node.hasAttribute("revision")
                 ):
-                    node.setAttribute(
+                    nodeGroups = parent_groups.copy()
-                        "revision", parent_node.getAttribute("revision")
+                    if node.hasAttribute("groups"):
-                    )
+                        nodeGroups |= self._ParseSet(
+                            node.getAttribute("groups")
+                        )
+                    node.setAttribute("groups", ",".join(sorted(nodeGroups)))
                 nodes.append(node)
         return nodes
 
@@ -1450,6 +1453,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
 
         repo_hooks_project = None
         enabled_repo_hooks = None
+        failed_revision_changes = []
         for node in itertools.chain(*node_list):
             if node.nodeName == "project":
                 project = self._ParseProject(node)
@@ -1467,7 +1471,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 dest_path = node.getAttribute("dest-path")
                 groups = node.getAttribute("groups")
                 if groups:
-                    groups = self._ParseList(groups)
+                    groups = self._ParseSet(groups or "")
                 revision = node.getAttribute("revision")
                 remote_name = node.getAttribute("remote")
                 if not remote_name:
@@ -1476,6 +1480,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                     remote = self._get_remote(node)
                 dest_branch = node.getAttribute("dest-branch")
                 upstream = node.getAttribute("upstream")
+                base_revision = node.getAttribute("base-rev")
 
                 named_projects = self._projects[name]
                 if dest_path and not path and len(named_projects) > 1:
@@ -1487,8 +1492,23 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                     if path and p.relpath != path:
                         continue
                     if groups:
-                        p.groups.extend(groups)
+                        p.groups |= groups
+                    # Drop local groups so we don't mistakenly omit this
+                    # project from the superproject override manifest.
+                    p.groups = {
+                        g
+                        for g in p.groups
+                        if not g.startswith(LOCAL_MANIFEST_GROUP_PREFIX)
+                    }
+
                     if revision:
+                        if base_revision:
+                            if p.revisionExpr != base_revision:
+                                failed_revision_changes.append(
+                                    "extend-project name %s mismatch base "
+                                    "%s vs revision %s"
+                                    % (name, base_revision, p.revisionExpr)
+                                )
                         p.SetRevision(revision)
 
                     if remote_name:
@@ -1510,6 +1530,14 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                         p.UpdatePaths(relpath, worktree, gitdir, objdir)
                         self._paths[p.relpath] = p
 
+                    for n in node.childNodes:
+                        if n.nodeName == "copyfile":
+                            self._ParseCopyFile(p, n)
+                        elif n.nodeName == "linkfile":
+                            self._ParseLinkFile(p, n)
+                        elif n.nodeName == "annotation":
+                            self._ParseAnnotation(p, n)
+
             if node.nodeName == "repo-hooks":
                 # Only one project can be the hooks project
                 if repo_hooks_project is not None:
@@ -1563,6 +1591,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             if node.nodeName == "remove-project":
                 name = node.getAttribute("name")
                 path = node.getAttribute("path")
+                base_revision = node.getAttribute("base-rev")
 
                 # Name or path needed.
                 if not name and not path:
@@ -1576,6 +1605,13 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 for projname, projects in list(self._projects.items()):
                     for p in projects:
                         if name == projname and not path:
+                            if base_revision:
+                                if p.revisionExpr != base_revision:
+                                    failed_revision_changes.append(
+                                        "remove-project name %s mismatch base "
+                                        "%s vs revision %s"
+                                        % (name, base_revision, p.revisionExpr)
+                                    )
                             del self._paths[p.relpath]
                             if not removed_project:
                                 del self._projects[name]
@@ -1583,6 +1619,17 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                         elif path == p.relpath and (
                             name == projname or not name
                         ):
+                            if base_revision:
+                                if p.revisionExpr != base_revision:
+                                    failed_revision_changes.append(
+                                        "remove-project path %s mismatch base "
+                                        "%s vs revision %s"
+                                        % (
+                                            p.relpath,
+                                            base_revision,
+                                            p.revisionExpr,
+                                        )
+                                    )
                             self._projects[projname].remove(p)
                             del self._paths[p.relpath]
                             removed_project = p.name
@@ -1602,6 +1649,13 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                         "project: %s" % node.toxml()
                     )
 
+        if failed_revision_changes:
+            raise ManifestParseError(
+                "revision base check failed, rebase patches and update "
+                "base revs for: ",
+                failed_revision_changes,
+            )
+
         # Store repo hooks project information.
         if repo_hooks_project:
             # Store a reference to the Project.
@@ -1715,6 +1769,13 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 % (self.manifestFile, d.sync_j)
             )
 
+        d.sync_j_max = XmlInt(node, "sync-j-max", None)
+        if d.sync_j_max is not None and d.sync_j_max <= 0:
+            raise ManifestParseError(
+                '%s: sync-j-max must be greater than 0, not "%s"'
+                % (self.manifestFile, d.sync_j_max)
+            )
+
         d.sync_c = XmlBool(node, "sync-c", False)
         d.sync_s = XmlBool(node, "sync-s", False)
         d.sync_tags = XmlBool(node, "sync-tags", True)
@@ -1777,7 +1838,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         groups = ""
         if node.hasAttribute("groups"):
             groups = node.getAttribute("groups")
-        groups = self._ParseList(groups)
+        groups = self._ParseSet(groups)
         default_groups = self._ParseList(node.getAttribute("default-groups"))
         path = node.getAttribute("path")
         if path == "":
@@ -1880,17 +1941,14 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 % (self.manifestFile, clone_depth)
             )
 
+        sync_strategy = node.getAttribute("sync-strategy") or None
+
         dest_branch = (
             node.getAttribute("dest-branch") or self._default.destBranchExpr
         )
 
         upstream = node.getAttribute("upstream") or self._default.upstreamExpr
 
-        groups = ""
-        if node.hasAttribute("groups"):
-            groups = node.getAttribute("groups")
-        groups = self._ParseList(groups)
-
         if parent is None:
             (
                 relpath,
@@ -1905,8 +1963,11 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 parent, name, path
             )
 
-        default_groups = ["all", "name:%s" % name, "path:%s" % relpath]
+        groups = ""
-        groups.extend(set(default_groups).difference(groups))
+        if node.hasAttribute("groups"):
+            groups = node.getAttribute("groups")
+        groups = self._ParseSet(groups)
+        groups |= {"all", f"name:{name}", f"path:{relpath}"}
 
         if self.IsMirror and node.hasAttribute("force-path"):
             if XmlBool(node, "force-path", False):
@@ -1928,6 +1989,7 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
             sync_s=sync_s,
             sync_tags=sync_tags,
             clone_depth=clone_depth,
+            sync_strategy=sync_strategy,
             upstream=upstream,
             parent=parent,
             dest_branch=dest_branch,
@@ -1938,11 +2000,11 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         for n in node.childNodes:
             if n.nodeName == "copyfile":
                 self._ParseCopyFile(project, n)
-            if n.nodeName == "linkfile":
+            elif n.nodeName == "linkfile":
                 self._ParseLinkFile(project, n)
-            if n.nodeName == "annotation":
+            elif n.nodeName == "annotation":
                 self._ParseAnnotation(project, n)
-            if n.nodeName == "project":
+            elif n.nodeName == "project":
                 project.subprojects.append(
                     self._ParseProject(n, parent=project)
                 )
@@ -2026,7 +2088,12 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         path = path.rstrip("/")
         name = name.rstrip("/")
         relpath = self._JoinRelpath(parent.relpath, path)
-        gitdir = os.path.join(parent.gitdir, "subprojects", "%s.git" % path)
+        subprojects = os.path.join(parent.gitdir, "subprojects", f"{path}.git")
+        modules = os.path.join(parent.gitdir, "modules", path)
+        if platform_utils.isdir(subprojects):
+            gitdir = subprojects
+        else:
+            gitdir = modules
         objdir = os.path.join(
             parent.gitdir, "subproject-objects", "%s.git" % name
         )
@@ -2077,22 +2144,22 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
         # implementation:
         # https://eclipse.googlesource.com/jgit/jgit/+/9110037e3e9461ff4dac22fee84ef3694ed57648/org.eclipse.jgit/src/org/eclipse/jgit/lib/ObjectChecker.java#884
         BAD_CODEPOINTS = {
-            "\u200C",  # ZERO WIDTH NON-JOINER
+            "\u200c",  # ZERO WIDTH NON-JOINER
-            "\u200D",  # ZERO WIDTH JOINER
+            "\u200d",  # ZERO WIDTH JOINER
-            "\u200E",  # LEFT-TO-RIGHT MARK
+            "\u200e",  # LEFT-TO-RIGHT MARK
-            "\u200F",  # RIGHT-TO-LEFT MARK
+            "\u200f",  # RIGHT-TO-LEFT MARK
-            "\u202A",  # LEFT-TO-RIGHT EMBEDDING
+            "\u202a",  # LEFT-TO-RIGHT EMBEDDING
-            "\u202B",  # RIGHT-TO-LEFT EMBEDDING
+            "\u202b",  # RIGHT-TO-LEFT EMBEDDING
-            "\u202C",  # POP DIRECTIONAL FORMATTING
+            "\u202c",  # POP DIRECTIONAL FORMATTING
-            "\u202D",  # LEFT-TO-RIGHT OVERRIDE
+            "\u202d",  # LEFT-TO-RIGHT OVERRIDE
-            "\u202E",  # RIGHT-TO-LEFT OVERRIDE
+            "\u202e",  # RIGHT-TO-LEFT OVERRIDE
-            "\u206A",  # INHIBIT SYMMETRIC SWAPPING
+            "\u206a",  # INHIBIT SYMMETRIC SWAPPING
-            "\u206B",  # ACTIVATE SYMMETRIC SWAPPING
+            "\u206b",  # ACTIVATE SYMMETRIC SWAPPING
-            "\u206C",  # INHIBIT ARABIC FORM SHAPING
+            "\u206c",  # INHIBIT ARABIC FORM SHAPING
-            "\u206D",  # ACTIVATE ARABIC FORM SHAPING
+            "\u206d",  # ACTIVATE ARABIC FORM SHAPING
-            "\u206E",  # NATIONAL DIGIT SHAPES
+            "\u206e",  # NATIONAL DIGIT SHAPES
-            "\u206F",  # NOMINAL DIGIT SHAPES
+            "\u206f",  # NOMINAL DIGIT SHAPES
-            "\uFEFF",  # ZERO WIDTH NO-BREAK SPACE
+            "\ufeff",  # ZERO WIDTH NO-BREAK SPACE
         }
         if BAD_CODEPOINTS & path_codepoints:
             # This message is more expansive than reality, but should be fine.
@@ -2290,7 +2357,6 @@ class RepoClient(XmlManifest):
             submanifest_path: The submanifest root relative to the repo root.
             **kwargs: Additional keyword arguments, passed to XmlManifest.
         """
-        self.isGitcClient = False
         submanifest_path = submanifest_path or ""
         if submanifest_path:
             self._CheckLocalPath(submanifest_path)

pager.py

@@ -40,7 +40,7 @@ def RunPager(globalConfig):
 
 
 def TerminatePager():
-    global pager_process, old_stdout, old_stderr
+    global pager_process
     if pager_process:
         sys.stdout.flush()
         sys.stderr.flush()

platform_utils.py

@@ -156,6 +156,12 @@ def remove(path, missing_ok=False):
                 os.rmdir(longpath)
             else:
                 os.remove(longpath)
+        elif (
+            e.errno == errno.EROFS
+            and missing_ok
+            and not os.path.exists(longpath)
+        ):
+            pass
         elif missing_ok and e.errno == errno.ENOENT:
             pass
         else:
@@ -251,32 +257,3 @@ def readlink(path):
         return platform_utils_win32.readlink(_makelongpath(path))
     else:
         return os.readlink(path)
-
-
-def realpath(path):
-    """Return the canonical path of the specified filename, eliminating
-    any symbolic links encountered in the path.
-
-    Availability: Windows, Unix.
-    """
-    if isWindows():
-        current_path = os.path.abspath(path)
-        path_tail = []
-        for c in range(0, 100):  # Avoid cycles
-            if islink(current_path):
-                target = readlink(current_path)
-                current_path = os.path.join(
-                    os.path.dirname(current_path), target
-                )
-            else:
-                basename = os.path.basename(current_path)
-                if basename == "":
-                    path_tail.append(current_path)
-                    break
-                path_tail.append(basename)
-                current_path = os.path.dirname(current_path)
-        path_tail.reverse()
-        result = os.path.normpath(os.path.join(*path_tail))
-        return result
-    else:
-        return os.path.realpath(path)

progress.py

@@ -25,7 +25,10 @@ except ImportError:
 from repo_trace import IsTraceToStderr
 
 
-_TTY = sys.stderr.isatty()
+# Capture the original stderr stream. We use this exclusively for progress
+# updates to ensure we talk to the terminal even if stderr is redirected.
+_STDERR = sys.stderr
+_TTY = _STDERR.isatty()
 
 # This will erase all content in the current line (wherever the cursor is).
 # It does not move the cursor, so this is usually followed by \r to move to
@@ -100,6 +103,8 @@ class Progress:
         self._show = not delay
         self._units = units
         self._elide = elide and _TTY
+        self._quiet = quiet
+        self._ended = False
 
         # Only show the active jobs section if we run more than one in parallel.
         self._show_jobs = False
@@ -114,15 +119,14 @@ class Progress:
         )
         self._update_thread.daemon = True
 
-        # When quiet, never show any output.  It's a bit hacky, but reusing the
+        if not quiet and show_elapsed:
-        # existing logic that delays initial output keeps the rest of the class
-        # clean.  Basically we set the start time to years in the future.
-        if quiet:
-            self._show = False
-            self._start += 2**32
-        elif show_elapsed:
             self._update_thread.start()
 
+    def update_total(self, new_total):
+        """Updates the total if the new total is larger."""
+        if new_total > self._total:
+            self._total = new_total
+
     def _update_loop(self):
         while True:
             self.update(inc=0)
@@ -132,11 +136,11 @@ class Progress:
     def _write(self, s):
         s = "\r" + s
         if self._elide:
-            col = os.get_terminal_size(sys.stderr.fileno()).columns
+            col = os.get_terminal_size(_STDERR.fileno()).columns
             if len(s) > col:
                 s = s[: col - 1] + ".."
-        sys.stderr.write(s)
+        _STDERR.write(s)
-        sys.stderr.flush()
+        _STDERR.flush()
 
     def start(self, name):
         self._active += 1
@@ -155,12 +159,14 @@ class Progress:
             inc: The number of items completed.
             msg: The message to display. If None, use the last message.
         """
+        if self._ended:
+            return
         self._done += inc
         if msg is None:
             msg = self._last_msg
         self._last_msg = msg
 
-        if not _TTY or IsTraceToStderr():
+        if not _TTY or IsTraceToStderr() or self._quiet:
             return
 
         elapsed_sec = time.time() - self._start
@@ -200,9 +206,28 @@ class Progress:
                 )
             )
 
+    def display_message(self, msg):
+        """Clears the current progress line and prints a message above it.
+
+        The progress bar is then redrawn on the next line.
+        """
+        if not _TTY or IsTraceToStderr() or self._quiet:
+            return
+
+        # Erase the current line, print the message with a newline,
+        # and then immediately redraw the progress bar on the new line.
+        _STDERR.write("\r" + CSI_ERASE_LINE)
+        _STDERR.write(msg + "\n")
+        _STDERR.flush()
+        self.update(inc=0)
+
     def end(self):
+        if self._ended:
+            return
+        self._ended = True
+
         self._update_event.set()
-        if not _TTY or IsTraceToStderr() or not self._show:
+        if not _TTY or IsTraceToStderr() or self._quiet:
             return
 
         duration = duration_str(time.time() - self._start)

pyproject.toml

@@ -1,4 +1,4 @@
-# Copyright 2023 The Android Open Source Project
+# Copyright (C) 2023 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,5 +14,33 @@
 
 [tool.black]
 line-length = 80
-# NB: Keep in sync with tox.ini.
 target-version = ['py36', 'py37', 'py38', 'py39', 'py310', 'py311'] #, 'py312'
+
+# Config file for the isort python module.
+# This is used to enforce import sorting standards.
+#
+# https://pycqa.github.io/isort/docs/configuration/options.html
+[tool.isort]
+# Be compatible with `black` since it also matches what we want.
+profile = 'black'
+
+line_length = 80
+length_sort = false
+force_single_line = true
+lines_after_imports = 2
+from_first = false
+case_sensitive = false
+force_sort_within_sections = true
+order_by_type = false
+
+# Ignore generated files.
+extend_skip_glob = '*_pb2.py'
+
+# Allow importing multiple classes on a single line from these modules.
+# https://google.github.io/styleguide/pyguide#s2.2-imports
+single_line_exclusions = ['abc', 'collections.abc', 'typing']
+
+[tool.pytest.ini_options]
+markers = """
+    skip_cq: Skip tests in the CQ. Should be rarely used!
+"""

release/check-metadata.py

@@ -0,0 +1,155 @@
+#!/usr/bin/env python3
+# Copyright (C) 2025 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Helper tool to check various metadata (e.g. licensing) in source files."""
+
+import argparse
+from pathlib import Path
+import re
+import sys
+
+import util
+
+
+_FILE_HEADER_RE = re.compile(
+    r"""# Copyright \(C\) 20[0-9]{2} The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2\.0 \(the "License"\);
+# you may not use this file except in compliance with the License\.
+# You may obtain a copy of the License at
+#
+#      http://www\.apache\.org/licenses/LICENSE-2\.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied\.
+# See the License for the specific language governing permissions and
+# limitations under the License\.
+"""
+)
+
+
+def check_license(path: Path, lines: list[str]) -> bool:
+    """Check license header."""
+    # Enforce licensing on configs & scripts.
+    if not (
+        path.suffix in (".bash", ".cfg", ".ini", ".py", ".toml")
+        or lines[0] in ("#!/bin/bash", "#!/bin/sh", "#!/usr/bin/env python3")
+    ):
+        return True
+
+    # Extract the file header.
+    header_lines = []
+    for line in lines:
+        if line.startswith("#"):
+            header_lines.append(line)
+        else:
+            break
+    if not header_lines:
+        print(
+            f"error: {path.relative_to(util.TOPDIR)}: "
+            "missing file header (copyright+licensing)",
+            file=sys.stderr,
+        )
+        return False
+
+    # Skip the shebang.
+    if header_lines[0].startswith("#!"):
+        header_lines.pop(0)
+
+    # If this file is imported into the tree, then leave it be.
+    if header_lines[0] == "# DO NOT EDIT THIS FILE":
+        return True
+
+    header = "".join(f"{x}\n" for x in header_lines)
+    if not _FILE_HEADER_RE.match(header):
+        print(
+            f"error: {path.relative_to(util.TOPDIR)}: "
+            "file header incorrectly formatted",
+            file=sys.stderr,
+        )
+        print(
+            "".join(f"> {x}\n" for x in header_lines), end="", file=sys.stderr
+        )
+        return False
+
+    return True
+
+
+def check_path(opts: argparse.Namespace, path: Path) -> bool:
+    """Check a single path."""
+    try:
+        data = path.read_text(encoding="utf-8")
+    except FileNotFoundError:
+        return True
+    lines = data.splitlines()
+    # NB: Use list comprehension and not a generator so we run all the checks.
+    return all(
+        [
+            check_license(path, lines),
+        ]
+    )
+
+
+def check_paths(opts: argparse.Namespace, paths: list[Path]) -> bool:
+    """Check all the paths."""
+    # NB: Use list comprehension and not a generator so we check all paths.
+    return all([check_path(opts, x) for x in paths])  # noqa: C419
+
+
+def find_files(opts: argparse.Namespace) -> list[Path]:
+    """Find all the files in the source tree."""
+    result = util.run(
+        opts,
+        ["git", "ls-tree", "-r", "-z", "--name-only", "HEAD"],
+        cwd=util.TOPDIR,
+        capture_output=True,
+        encoding="utf-8",
+    )
+    return [util.TOPDIR / x for x in result.stdout.split("\0")[:-1]]
+
+
+def get_parser() -> argparse.ArgumentParser:
+    """Get a CLI parser."""
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "-n",
+        "--dry-run",
+        dest="dryrun",
+        action="store_true",
+        help="show everything that would be done",
+    )
+    parser.add_argument(
+        "paths",
+        nargs="*",
+        help="the paths to scan",
+    )
+    return parser
+
+
+def main(argv: list[str]) -> int:
+    """The main func!"""
+    parser = get_parser()
+    opts = parser.parse_args(argv)
+
+    paths = opts.paths
+    if not opts.paths:
+        paths = find_files(opts)
+
+    return 0 if check_paths(opts, paths) else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))

release/sign-launcher.py

@@ -27,6 +27,9 @@ import sys
 import util
 
 
+assert sys.version_info >= (3, 9), "Release framework requires Python 3.9+"
+
+
 def sign(opts):
     """Sign the launcher!"""
     output = ""

release/sign-tag.py

@@ -30,6 +30,9 @@ import sys
 import util
 
 
+assert sys.version_info >= (3, 9), "Release framework requires Python 3.9+"
+
+
 # We currently sign with the old DSA key as it's been around the longest.
 # We should transition to RSA by Jun 2020, and ECC by Jun 2021.
 KEYID = util.KEYID_DSA

release/update-hooks

@@ -0,0 +1,143 @@
+#!/usr/bin/env python3
+# Copyright (C) 2024 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Helper tool for updating hooks from their various upstreams."""
+
+import argparse
+import base64
+import json
+from pathlib import Path
+import sys
+from typing import List, Optional
+import urllib.request
+
+
+assert sys.version_info >= (3, 9), "Release framework requires Python 3.9+"
+
+
+TOPDIR = Path(__file__).resolve().parent.parent
+HOOKS_DIR = TOPDIR / "hooks"
+
+
+def update_hook_commit_msg() -> None:
+    """Update commit-msg hook from Gerrit."""
+    hook = HOOKS_DIR / "commit-msg"
+    print(
+        f"{hook.name}: Updating from https://gerrit.googlesource.com/gerrit/"
+        "+/HEAD/resources/com/google/gerrit/server/tools/root/hooks/commit-msg"
+    )
+
+    # Get the current commit.
+    url = "https://gerrit.googlesource.com/gerrit/+/HEAD?format=JSON"
+    with urllib.request.urlopen(url) as fp:
+        data = fp.read()
+    # Discard the xss protection.
+    data = data.split(b"\n", 1)[1]
+    data = json.loads(data)
+    commit = data["commit"]
+
+    # Fetch the data for that commit.
+    url = (
+        f"https://gerrit.googlesource.com/gerrit/+/{commit}/"
+        "resources/com/google/gerrit/server/tools/root/hooks/commit-msg"
+    )
+    with urllib.request.urlopen(f"{url}?format=TEXT") as fp:
+        data = fp.read()
+
+    # gitiles base64 encodes text data.
+    data = base64.b64decode(data)
+
+    # Inject header into the hook.
+    lines = data.split(b"\n")
+    lines = (
+        lines[:1]
+        + [
+            b"# DO NOT EDIT THIS FILE",
+            (
+                b"# All updates should be sent upstream: "
+                b"https://gerrit.googlesource.com/gerrit/"
+            ),
+            f"# This is synced from commit: {commit}".encode("utf-8"),
+            b"# DO NOT EDIT THIS FILE",
+        ]
+        + lines[1:]
+    )
+    data = b"\n".join(lines)
+
+    # Update the hook.
+    hook.write_bytes(data)
+    hook.chmod(0o755)
+
+
+def update_hook_pre_auto_gc() -> None:
+    """Update pre-auto-gc hook from git."""
+    hook = HOOKS_DIR / "pre-auto-gc"
+    print(
+        f"{hook.name}: Updating from https://github.com/git/git/"
+        "HEAD/contrib/hooks/pre-auto-gc-battery"
+    )
+
+    # Get the current commit.
+    headers = {
+        "Accept": "application/vnd.github+json",
+        "X-GitHub-Api-Version": "2022-11-28",
+    }
+    url = "https://api.github.com/repos/git/git/git/refs/heads/master"
+    req = urllib.request.Request(url, headers=headers)
+    with urllib.request.urlopen(req) as fp:
+        data = fp.read()
+    data = json.loads(data)
+
+    # Fetch the data for that commit.
+    commit = data["object"]["sha"]
+    url = (
+        f"https://raw.githubusercontent.com/git/git/{commit}/"
+        "contrib/hooks/pre-auto-gc-battery"
+    )
+    with urllib.request.urlopen(url) as fp:
+        data = fp.read()
+
+    # Inject header into the hook.
+    lines = data.split(b"\n")
+    lines = (
+        lines[:1]
+        + [
+            b"# DO NOT EDIT THIS FILE",
+            (
+                b"# All updates should be sent upstream: "
+                b"https://github.com/git/git/"
+            ),
+            f"# This is synced from commit: {commit}".encode("utf-8"),
+            b"# DO NOT EDIT THIS FILE",
+        ]
+        + lines[1:]
+    )
+    data = b"\n".join(lines)
+
+    # Update the hook.
+    hook.write_bytes(data)
+    hook.chmod(0o755)
+
+
+def main(argv: Optional[List[str]] = None) -> Optional[int]:
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.parse_args(argv)
+
+    update_hook_commit_msg()
+    update_hook_pre_auto_gc()
+
+
+if __name__ == "__main__":
+    sys.exit(main(sys.argv[1:]))

release/update_manpages.py

@@ -27,9 +27,15 @@ import shutil
 import subprocess
 import sys
 import tempfile
+from typing import List
 
 
-TOPDIR = Path(__file__).resolve().parent.parent
+# NB: This script is currently imported by tests/ to unittest some logic.
+assert sys.version_info >= (3, 6), "Python 3.6+ required"
+
+
+THIS_FILE = Path(__file__).resolve()
+TOPDIR = THIS_FILE.parent.parent
 MANDIR = TOPDIR.joinpath("man")
 
 # Load repo local modules.
@@ -42,9 +48,23 @@ def worker(cmd, **kwargs):
     subprocess.run(cmd, **kwargs)
 
 
-def main(argv):
+def get_parser() -> argparse.ArgumentParser:
+    """Get argument parser."""
     parser = argparse.ArgumentParser(description=__doc__)
-    parser.parse_args(argv)
+    parser.add_argument(
+        "-n",
+        "--check",
+        "--dry-run",
+        action="store_const",
+        const=True,
+        help="Check if changes are necessary; don't actually change files",
+    )
+    return parser
+
+
+def main(argv: List[str]) -> int:
+    parser = get_parser()
+    opts = parser.parse_args(argv)
 
     if not shutil.which("help2man"):
         sys.exit("Please install help2man to continue.")
@@ -117,6 +137,7 @@ def main(argv):
                 functools.partial(worker, cwd=tempdir, check=True), cmdlist
             )
 
+    ret = 0
     for tmp_path in MANDIR.glob("*.1.tmp"):
         path = tmp_path.parent / tmp_path.stem
         old_data = path.read_text() if path.exists() else ""
@@ -133,7 +154,17 @@ def main(argv):
         )
         new_data = re.sub(r'^(\.TH REPO "1" ")([^"]+)', r"\1", data, flags=re.M)
         if old_data != new_data:
-            path.write_text(data)
+            if opts.check:
+                ret = 1
+                print(
+                    f"{THIS_FILE.name}: {path.name}: "
+                    "man page needs regenerating",
+                    file=sys.stderr,
+                )
+            else:
+                path.write_text(data)
+
+    return ret
 
 
 def replace_regex(data):

release/util.py

@@ -14,8 +14,9 @@
 
 """Random utility code for release tools."""
 
-import os
+from pathlib import Path
 import re
+import shlex
 import subprocess
 import sys
 
@@ -23,8 +24,9 @@ import sys
 assert sys.version_info >= (3, 6), "This module requires Python 3.6+"
 
 
-TOPDIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+THIS_FILE = Path(__file__).resolve()
-HOMEDIR = os.path.expanduser("~")
+TOPDIR = THIS_FILE.parent.parent
+HOMEDIR = Path("~").expanduser()
 
 
 # These are the release keys we sign with.
@@ -35,12 +37,7 @@ KEYID_ECC = "E1F9040D7A3F6DAFAC897CD3D3B95DA243E48A39"
 
 def cmdstr(cmd):
     """Get a nicely quoted shell command."""
-    ret = []
+    return " ".join(shlex.quote(x) for x in cmd)
-    for arg in cmd:
-        if not re.match(r"^[a-zA-Z0-9/_.=-]+$", arg):
-            arg = f'"{arg}"'
-        ret.append(arg)
-    return " ".join(ret)
 
 
 def run(opts, cmd, check=True, **kwargs):
@@ -58,7 +55,7 @@ def run(opts, cmd, check=True, **kwargs):
 def import_release_key(opts):
     """Import the public key of the official release repo signing key."""
     # Extract the key from our repo launcher.
-    launcher = getattr(opts, "launcher", os.path.join(TOPDIR, "repo"))
+    launcher = getattr(opts, "launcher", TOPDIR / "repo")
     print(f'Importing keys from "{launcher}" launcher script')
     with open(launcher, encoding="utf-8") as fp:
         data = fp.read()

repo

@@ -1,5 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
-#
 # Copyright (C) 2008 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -27,6 +26,7 @@ import platform
 import shlex
 import subprocess
 import sys
+from typing import NamedTuple
 
 
 # These should never be newer than the main.py version since this needs to be a
@@ -56,9 +56,14 @@ class Trace:
 trace = Trace()
 
 
+def cmdstr(cmd):
+    """Get a nicely quoted shell command."""
+    return " ".join(shlex.quote(x) for x in cmd)
+
+
 def exec_command(cmd):
     """Execute |cmd| or return None on failure."""
-    trace.print(":", " ".join(cmd))
+    trace.print(":", cmdstr(cmd))
     try:
         if platform.system() == "Windows":
             ret = subprocess.call(cmd)
@@ -79,7 +84,7 @@ def check_python_version():
     major = ver.major
     minor = ver.minor
 
-    # Try to re-exec the version specific Python 3 if needed.
+    # Try to re-exec the version specific Python if needed.
     if (major, minor) < MIN_PYTHON_VERSION_SOFT:
         # Python makes releases ~once a year, so try our min version +10 to help
         # bridge the gap.  This is the fallback anyways so perf isn't critical.
@@ -96,36 +101,10 @@ def check_python_version():
                 break
             reexec(f"python{min_major}.{min_minor - inc}")
 
-        # Try the generic Python 3 wrapper, but only if it's new enough.  If it
-        # isn't, we want to just give up below and make the user resolve things.
-        try:
-            proc = subprocess.Popen(
-                [
-                    "python3",
-                    "-c",
-                    "import sys; "
-                    "print(sys.version_info.major, sys.version_info.minor)",
-                ],
-                stdout=subprocess.PIPE,
-                stderr=subprocess.PIPE,
-            )
-            (output, _) = proc.communicate()
-            python3_ver = tuple(int(x) for x in output.decode("utf-8").split())
-        except (OSError, subprocess.CalledProcessError):
-            python3_ver = None
-
-        # If the python3 version looks like it's new enough, give it a try.
-        if (
-            python3_ver
-            and python3_ver >= MIN_PYTHON_VERSION_HARD
-            and python3_ver != (major, minor)
-        ):
-            reexec("python3")
-
         # We're still here, so diagnose things for the user.
         if (major, minor) < MIN_PYTHON_VERSION_HARD:
             print(
-                "repo: error: Python 3 version is too old; "
+                "repo: error: Python version is too old; "
                 "Please use Python {}.{} or newer.".format(
                     *MIN_PYTHON_VERSION_HARD
                 ),
@@ -150,7 +129,7 @@ if not REPO_REV:
 BUG_URL = "https://issues.gerritcodereview.com/issues/new?component=1370071"
 
 # increment this whenever we make important changes to this script
-VERSION = (2, 40)
+VERSION = (2, 54)
 
 # increment this if the MAINTAINER_KEYS block is modified
 KEYRING_VERSION = (2, 3)
@@ -236,18 +215,13 @@ GIT = "git"  # our git command
 # NB: The version of git that the repo launcher requires may be much older than
 # the version of git that the main repo source tree requires.  Keeping this at
 # an older version also makes it easier for users to upgrade/rollback as needed.
-#
+MIN_GIT_VERSION = (1, 7, 9)  # minimum supported git version
-# git-1.7 is in (EOL) Ubuntu Precise.
-MIN_GIT_VERSION = (1, 7, 2)  # minimum supported git version
 repodir = ".repo"  # name of repo's private directory
 S_repo = "repo"  # special repo repository
 S_manifests = "manifests"  # special manifest repository
 REPO_MAIN = S_repo + "/main.py"  # main script
-GITC_CONFIG_FILE = "/gitc/.config"
-GITC_FS_ROOT_DIR = "/gitc/manifest-rw/"
 
 
-import collections
 import errno
 import json
 import optparse
@@ -263,12 +237,9 @@ home_dot_repo = os.path.join(repo_config_dir, ".repoconfig")
 gpg_dir = os.path.join(home_dot_repo, "gnupg")
 
 
-def GetParser(gitc_init=False):
+def GetParser():
     """Setup the CLI parser."""
-    if gitc_init:
+    usage = "repo init [options] [-u] url"
-        sys.exit("repo: fatal: GITC not supported.")
-    else:
-        usage = "repo init [options] [-u] url"
 
     parser = optparse.OptionParser(usage=usage)
     InitParser(parser)
@@ -310,6 +281,12 @@ def InitParser(parser):
         metavar="REVISION",
         help="manifest branch or revision (use HEAD for default)",
     )
+    group.add_option(
+        "--manifest-upstream-branch",
+        help="when a commit is provided to --manifest-branch, this "
+        "is the name of the git ref in which the commit can be found",
+        metavar="BRANCH",
+    )
     group.add_option(
         "-m",
         "--manifest-name",
@@ -509,16 +486,6 @@ def InitParser(parser):
     return parser
 
 
-# This is a poor replacement for subprocess.run until we require Python 3.6+.
-RunResult = collections.namedtuple(
-    "RunResult", ("returncode", "stdout", "stderr")
-)
-
-
-class RunError(Exception):
-    """Error when running a command failed."""
-
-
 def run_command(cmd, **kwargs):
     """Run |cmd| and return its output."""
     check = kwargs.pop("check", False)
@@ -543,7 +510,7 @@ def run_command(cmd, **kwargs):
     # Run & package the results.
     proc = subprocess.Popen(cmd, **kwargs)
     (stdout, stderr) = proc.communicate(input=cmd_input)
-    dbg = ": " + " ".join(cmd)
+    dbg = ": " + cmdstr(cmd)
     if cmd_input is not None:
         dbg += " 0<|"
     if stdout == subprocess.PIPE:
@@ -553,7 +520,9 @@ def run_command(cmd, **kwargs):
     elif stderr == subprocess.STDOUT:
         dbg += " 2>&1"
     trace.print(dbg)
-    ret = RunResult(proc.returncode, decode(stdout), decode(stderr))
+    ret = subprocess.CompletedProcess(
+        cmd, proc.returncode, decode(stdout), decode(stderr)
+    )
 
     # If things failed, print useful debugging output.
     if check and ret.returncode:
@@ -574,56 +543,13 @@ def run_command(cmd, **kwargs):
 
         _print_output("stdout", ret.stdout)
         _print_output("stderr", ret.stderr)
-        raise RunError(ret)
+        # This will raise subprocess.CalledProcessError for us.
+        ret.check_returncode()
 
     return ret
 
 
-_gitc_manifest_dir = None
-
-
-def get_gitc_manifest_dir():
-    global _gitc_manifest_dir
-    if _gitc_manifest_dir is None:
-        _gitc_manifest_dir = ""
-        try:
-            with open(GITC_CONFIG_FILE) as gitc_config:
-                for line in gitc_config:
-                    match = re.match("gitc_dir=(?P<gitc_manifest_dir>.*)", line)
-                    if match:
-                        _gitc_manifest_dir = match.group("gitc_manifest_dir")
-        except OSError:
-            pass
-    return _gitc_manifest_dir
-
-
-def gitc_parse_clientdir(gitc_fs_path):
-    """Parse a path in the GITC FS and return its client name.
-
-    Args:
-        gitc_fs_path: A subdirectory path within the GITC_FS_ROOT_DIR.
-
-    Returns:
-        The GITC client name.
-    """
-    if gitc_fs_path == GITC_FS_ROOT_DIR:
-        return None
-    if not gitc_fs_path.startswith(GITC_FS_ROOT_DIR):
-        manifest_dir = get_gitc_manifest_dir()
-        if manifest_dir == "":
-            return None
-        if manifest_dir[-1] != "/":
-            manifest_dir += "/"
-        if gitc_fs_path == manifest_dir:
-            return None
-        if not gitc_fs_path.startswith(manifest_dir):
-            return None
-        return gitc_fs_path.split(manifest_dir)[1].split("/")[0]
-    return gitc_fs_path.split(GITC_FS_ROOT_DIR)[1].split("/")[0]
-
-
 class CloneFailure(Exception):
-
     """Indicate the remote clone of repo itself failed."""
 
 
@@ -660,9 +586,9 @@ def check_repo_rev(dst, rev, repo_verify=True, quiet=False):
     return (remote_ref, rev)
 
 
-def _Init(args, gitc_init=False):
+def _Init(args):
     """Installs repo by cloning it over the network."""
-    parser = GetParser(gitc_init=gitc_init)
+    parser = GetParser()
     opt, args = parser.parse_args(args)
     if args:
         if not opt.manifest_url:
@@ -742,15 +668,20 @@ def run_git(*args, **kwargs):
             file=sys.stderr,
         )
         sys.exit(1)
-    except RunError:
+    except subprocess.CalledProcessError:
         raise CloneFailure()
 
 
-# The git version info broken down into components for easy analysis.
+class GitVersion(NamedTuple):
-# Similar to Python's sys.version_info.
+    """The git version info broken down into components for easy analysis.
-GitVersion = collections.namedtuple(
+
-    "GitVersion", ("major", "minor", "micro", "full")
+    Similar to Python's sys.version_info.
-)
+    """
+
+    major: int
+    minor: int
+    micro: int
+    full: int
 
 
 def ParseGitVersion(ver_str=None):
@@ -916,10 +847,11 @@ def _GetRepoConfig(name):
         return None
     else:
         print(
-            f"repo: error: git {' '.join(cmd)} failed:\n{ret.stderr}",
+            f"repo: error: git {cmdstr(cmd)} failed:\n{ret.stderr}",
             file=sys.stderr,
         )
-        raise RunError()
+        # This will raise subprocess.CalledProcessError for us.
+        ret.check_returncode()
 
 
 def _InitHttp():
@@ -1186,7 +1118,7 @@ class _Options:
 def _ExpandAlias(name):
     """Look up user registered aliases."""
     # We don't resolve aliases for existing subcommands.  This matches git.
-    if name in {"gitc-init", "help", "init"}:
+    if name in {"help", "init"}:
         return name, []
 
     alias = _GetRepoConfig(f"alias.{name}")
@@ -1245,7 +1177,6 @@ class Requirements:
             with open(path, "rb") as f:
                 data = f.read()
         except OSError:
-            # NB: EnvironmentError is used for Python 2 & 3 compatibility.
             # If we couldn't open the file, assume it's an old source tree.
             return None
 
@@ -1265,13 +1196,13 @@ class Requirements:
 
         return cls(json_data)
 
-    def _get_soft_ver(self, pkg):
+    def get_soft_ver(self, pkg):
         """Return the soft version for |pkg| if it exists."""
-        return self.requirements.get(pkg, {}).get("soft", ())
+        return tuple(self.requirements.get(pkg, {}).get("soft", ()))
 
-    def _get_hard_ver(self, pkg):
+    def get_hard_ver(self, pkg):
         """Return the hard version for |pkg| if it exists."""
-        return self.requirements.get(pkg, {}).get("hard", ())
+        return tuple(self.requirements.get(pkg, {}).get("hard", ()))
 
     @staticmethod
     def _format_ver(ver):
@@ -1281,8 +1212,8 @@ class Requirements:
     def assert_ver(self, pkg, curr_ver):
         """Verify |pkg|'s |curr_ver| is new enough."""
         curr_ver = tuple(curr_ver)
-        soft_ver = tuple(self._get_soft_ver(pkg))
+        soft_ver = tuple(self.get_soft_ver(pkg))
-        hard_ver = tuple(self._get_hard_ver(pkg))
+        hard_ver = tuple(self.get_hard_ver(pkg))
         if curr_ver < hard_ver:
             print(
                 f'repo: error: Your version of "{pkg}" '
@@ -1315,10 +1246,6 @@ class Requirements:
 
 
 def _Usage():
-    gitc_usage = ""
-    if get_gitc_manifest_dir():
-        gitc_usage = "  gitc-init Initialize a GITC Client.\n"
-
     print(
         """usage: repo COMMAND [ARGS]
 
@@ -1327,9 +1254,7 @@ repo is not yet installed.  Use "repo init" to install it here.
 The most commonly used repo commands are:
 
   init      Install repo in the current working directory
-"""
+  help      Display detailed help on a command
-        + gitc_usage
-        + """  help      Display detailed help on a command
 
 For access to the full online help, install repo ("repo init").
 """
@@ -1340,8 +1265,8 @@ For access to the full online help, install repo ("repo init").
 
 def _Help(args):
     if args:
-        if args[0] in {"init", "gitc-init"}:
+        if args[0] in {"init"}:
-            parser = GetParser(gitc_init=args[0] == "gitc-init")
+            parser = GetParser()
             parser.print_help()
             sys.exit(0)
         else:
@@ -1358,19 +1283,16 @@ def _Help(args):
 
 def _Version():
     """Show version information."""
+    git_version = ParseGitVersion()
     print("<repo not installed>")
     print(f"repo launcher version {'.'.join(str(x) for x in VERSION)}")
     print(f"       (from {__file__})")
-    print(f"git {ParseGitVersion().full}")
+    print(f"git {git_version.full}" if git_version else "git not installed")
     print(f"Python {sys.version}")
     uname = platform.uname()
-    if sys.version_info.major < 3:
+    print(f"OS {uname.system} {uname.release} ({uname.version})")
-        # Python 3 returns a named tuple, but Python 2 is simpler.
+    processor = uname.processor if uname.processor else "unknown"
-        print(uname)
+    print(f"CPU {uname.machine} ({processor})")
-    else:
-        print(f"OS {uname.system} {uname.release} ({uname.version})")
-        processor = uname.processor if uname.processor else "unknown"
-        print(f"CPU {uname.machine} ({processor})")
     print("Bug reports:", BUG_URL)
     sys.exit(0)
 
@@ -1398,11 +1320,11 @@ def _RunSelf(wrapper_path):
     my_main = os.path.join(my_dir, "main.py")
     my_git = os.path.join(my_dir, ".git")
 
-    if os.path.isfile(my_main) and os.path.isdir(my_git):
+    if os.path.isfile(my_main):
         for name in ["git_config.py", "project.py", "subcmds"]:
             if not os.path.exists(os.path.join(my_dir, name)):
                 return None, None
-        return my_main, my_git
+        return my_main, my_git if os.path.isdir(my_git) else None
     return None, None
 
 
@@ -1433,23 +1355,11 @@ def main(orig_args):
     # We run this early as we run some git commands ourselves.
     SetGitTrace2ParentSid()
 
-    repo_main, rel_repo_dir = None, None
+    repo_main, rel_repo_dir = _FindRepo()
-    # Don't use the local repo copy, make sure to switch to the gitc client first.
-    if cmd != "gitc-init":
-        repo_main, rel_repo_dir = _FindRepo()
 
     wrapper_path = os.path.abspath(__file__)
     my_main, my_git = _RunSelf(wrapper_path)
 
-    cwd = os.getcwd()
-    if get_gitc_manifest_dir() and cwd.startswith(get_gitc_manifest_dir()):
-        print(
-            "error: repo cannot be used in the GITC local manifest directory."
-            "\nIf you want to work on this GITC client please rerun this "
-            "command from the corresponding client under /gitc/",
-            file=sys.stderr,
-        )
-        sys.exit(1)
     if not repo_main:
         # Only expand aliases here since we'll be parsing the CLI ourselves.
         # If we had repo_main, alias expansion would happen in main.py.
@@ -1464,11 +1374,11 @@ def main(orig_args):
             _Version()
         if not cmd:
             _NotInstalled()
-        if cmd == "init" or cmd == "gitc-init":
+        if cmd == "init":
             if my_git:
                 _SetDefaultsTo(my_git)
             try:
-                _Init(args, gitc_init=(cmd == "gitc-init"))
+                _Init(args)
             except CloneFailure:
                 path = os.path.join(repodir, S_repo)
                 print(

repo_logging.py

@@ -39,8 +39,8 @@ class _LogColoring(Coloring):
 
     def __init__(self, config):
         super().__init__(config, "logs")
-        self.error = self.colorer("error", fg="red")
+        self.error = self.nofmt_colorer("error", fg="red")
-        self.warning = self.colorer("warn", fg="yellow")
+        self.warning = self.nofmt_colorer("warn", fg="yellow")
         self.levelMap = {
             "WARNING": self.warning,
             "ERROR": self.error,

requirements.json

@@ -46,12 +46,14 @@
 
   # Supported git versions.
   #
-  # git-1.7.2 is in Debian Squeeze.
-  # git-1.7.9 is in Ubuntu Precise.
   # git-1.9.1 is in Ubuntu Trusty.
-  # git-1.7.10 is in Debian Wheezy.
+  # git-2.1.4 is in Debian Jessie.
+  # git-2.7.4 is in Ubuntu Xenial.
+  # git-2.11.0 is in Debian Stretch.
+  # git-2.17.0 is in Ubuntu Bionic.
+  # git-2.20.1 is in Debian Buster.
   "git": {
-    "hard": [1, 7, 2],
+    "hard": [1, 9, 1],
-    "soft": [1, 9, 1]
+    "soft": [2, 7, 4]
   }
 }

run_tests

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# Copyright 2019 The Android Open Source Project
+# Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -15,54 +15,176 @@
 
 """Wrapper to run linters and pytest with the right settings."""
 
+import functools
 import os
+import shlex
+import shutil
 import subprocess
 import sys
 
-import pytest
+
+# NB: While tests/* support Python >=3.6 to match requirements.json for `repo`,
+# the higher level runner logic does not need to be held back.
+assert sys.version_info >= (3, 9), "Test/release framework requires Python 3.9+"
 
 
 ROOT_DIR = os.path.dirname(os.path.realpath(__file__))
 
 
+def log_cmd(cmd: str, argv: list[str]) -> None:
+    """Log a debug message to make history easier to track."""
+    print("+", cmd, shlex.join(argv), file=sys.stderr)
+
+
+@functools.lru_cache()
+def is_ci() -> bool:
+    """Whether we're running in our CI system."""
+    return os.getenv("LUCI_CQ") == "yes"
+
+
+def run_pytest(argv: list[str]) -> int:
+    """Returns the exit code from pytest."""
+    if is_ci():
+        argv = ["-m", "not skip_cq"] + argv
+
+    log_cmd("pytest", argv)
+    return subprocess.run(
+        [sys.executable, "-m", "pytest"] + argv,
+        check=False,
+        cwd=ROOT_DIR,
+    ).returncode
+
+
+def run_pytest_py38(argv: list[str]) -> int:
+    """Returns the exit code from pytest under Python 3.8."""
+    if is_ci():
+        argv = ["-m", "not skip_cq"] + argv
+
+    log_cmd("[vpython 3.8] pytest", argv)
+    try:
+        return subprocess.run(
+            [
+                "vpython3",
+                "-vpython-spec",
+                "run_tests.vpython3.8",
+                "-m",
+                "pytest",
+            ]
+            + argv,
+            check=False,
+            cwd=ROOT_DIR,
+        ).returncode
+    except FileNotFoundError:
+        # Skip if the user doesn't have vpython from depot_tools.
+        return 0
+
+
 def run_black():
     """Returns the exit code from black."""
+    argv = ["--version"]
+    log_cmd("black", argv)
+    subprocess.run(
+        [sys.executable, "-m", "black"] + argv,
+        check=True,
+        cwd=ROOT_DIR,
+    )
+
     # Black by default only matches .py files.  We have to list standalone
     # scripts manually.
     extra_programs = [
         "repo",
         "run_tests",
+        "release/update-hooks",
         "release/update-manpages",
     ]
+    argv = ["--diff", "--check", ROOT_DIR] + extra_programs
+    log_cmd("black", argv)
     return subprocess.run(
-        [sys.executable, "-m", "black", "--check", ROOT_DIR] + extra_programs,
+        [sys.executable, "-m", "black"] + argv,
         check=False,
+        cwd=ROOT_DIR,
     ).returncode
 
 
 def run_flake8():
     """Returns the exit code from flake8."""
+    argv = ["--version"]
+    log_cmd("flake8", argv)
+    subprocess.run(
+        [sys.executable, "-m", "flake8"] + argv,
+        check=True,
+        cwd=ROOT_DIR,
+    )
+
+    argv = [ROOT_DIR]
+    log_cmd("flake8", argv)
     return subprocess.run(
-        [sys.executable, "-m", "flake8", ROOT_DIR], check=False
+        [sys.executable, "-m", "flake8"] + argv,
+        check=False,
+        cwd=ROOT_DIR,
     ).returncode
 
 
 def run_isort():
     """Returns the exit code from isort."""
+    argv = ["--version-number"]
+    log_cmd("isort", argv)
+    subprocess.run(
+        [sys.executable, "-m", "isort"] + argv,
+        check=True,
+        cwd=ROOT_DIR,
+    )
+
+    argv = ["--check", ROOT_DIR]
+    log_cmd("isort", argv)
     return subprocess.run(
-        [sys.executable, "-m", "isort", "--check", ROOT_DIR], check=False
+        [sys.executable, "-m", "isort"] + argv,
+        check=False,
+        cwd=ROOT_DIR,
+    ).returncode
+
+
+def run_check_metadata():
+    """Returns the exit code from check-metadata."""
+    argv = []
+    log_cmd("release/check-metadata.py", argv)
+    return subprocess.run(
+        [sys.executable, "release/check-metadata.py"] + argv,
+        check=False,
+        cwd=ROOT_DIR,
+    ).returncode
+
+
+def run_update_manpages() -> int:
+    """Returns the exit code from release/update-manpages."""
+    # Allow this to fail on CI, but not local devs.
+    if is_ci() and not shutil.which("help2man"):
+        print("update-manpages: help2man not found; skipping test")
+        return 0
+
+    argv = ["--check"]
+    log_cmd("release/update-manpages", argv)
+    return subprocess.run(
+        [sys.executable, "release/update-manpages"] + argv,
+        check=False,
+        cwd=ROOT_DIR,
     ).returncode
 
 
 def main(argv):
     """The main entry."""
     checks = (
-        lambda: pytest.main(argv),
+        functools.partial(run_pytest, argv),
+        functools.partial(run_pytest_py38, argv),
         run_black,
         run_flake8,
         run_isort,
+        run_check_metadata,
+        run_update_manpages,
     )
-    return 0 if all(not c() for c in checks) else 1
+    # Run all the tests all the time to get full feedback.  Don't exit on the
+    # first error as that makes it more difficult to iterate in the CQ.
+    return 1 if sum(c() for c in checks) else 0
 
 
 if __name__ == "__main__":

run_tests.vpython3

@@ -5,97 +5,92 @@
 # List of available wheels:
 #   https://chromium.googlesource.com/infra/infra/+/main/infra/tools/dockerbuild/wheels.md
 
-python_version: "3.8"
+python_version: "3.11"
 
 wheel: <
   name: "infra/python/wheels/pytest-py3"
-  version: "version:6.2.2"
+  version: "version:8.3.4"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/py-py2_py3"
-  version: "version:1.10.0"
+  version: "version:1.11.0"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/iniconfig-py3"
   version: "version:1.1.1"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/packaging-py3"
   version: "version:23.0"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/pluggy-py3"
-  version: "version:0.13.1"
+  version: "version:1.5.0"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/toml-py3"
   version: "version:0.10.1"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4
 wheel: <
   name: "infra/python/wheels/pyparsing-py3"
   version: "version:3.0.7"
 >
 
-# Required by pytest==6.2.2
+# Required by pytest==8.3.4 and flake8-bugbear==24.12.12
 wheel: <
-  name: "infra/python/wheels/attrs-py2_py3"
+  name: "infra/python/wheels/attrs-py3"
-  version: "version:21.4.0"
+  version: "version:24.2.0"
->
-
-# Required by packaging==16.8
-wheel: <
-  name: "infra/python/wheels/six-py2_py3"
-  version: "version:1.16.0"
 >
 
+# NB: Keep in sync with constraints.txt.
 wheel: <
   name: "infra/python/wheels/black-py3"
-  version: "version:23.1.0"
+  version: "version:25.1.0"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/mypy-extensions-py3"
   version: "version:0.4.3"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/tomli-py3"
   version: "version:2.0.1"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/platformdirs-py3"
   version: "version:2.5.2"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/pathspec-py3"
   version: "version:0.9.0"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/typing-extensions-py3"
   version: "version:4.3.0"
 >
 
-# Required by black==23.1.0
+# Required by black==25.1.0
 wheel: <
   name: "infra/python/wheels/click-py3"
   version: "version:8.0.3"
@@ -124,6 +119,16 @@ wheel: <
   version: "version:2.10.0"
 >
 
+wheel: <
+  name: "infra/python/wheels/flake8-bugbear-py3"
+  version: "version:24.12.12"
+>
+
+wheel: <
+  name: "infra/python/wheels/flake8-comprehensions-py3"
+  version: "version:3.16.0"
+>
+
 wheel: <
   name: "infra/python/wheels/isort-py3"
   version: "version:5.10.1"

run_tests.vpython3.8

@@ -0,0 +1,67 @@
+# This is a vpython "spec" file.
+#
+# Read more about `vpython` and how to modify this file here:
+#   https://chromium.googlesource.com/infra/infra/+/main/doc/users/vpython.md
+# List of available wheels:
+#   https://chromium.googlesource.com/infra/infra/+/main/infra/tools/dockerbuild/wheels.md
+
+python_version: "3.8"
+
+wheel: <
+  name: "infra/python/wheels/pytest-py3"
+  version: "version:8.3.4"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/py-py2_py3"
+  version: "version:1.11.0"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/iniconfig-py3"
+  version: "version:1.1.1"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/packaging-py3"
+  version: "version:23.0"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/pluggy-py3"
+  version: "version:1.5.0"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/toml-py3"
+  version: "version:0.10.1"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/tomli-py3"
+  version: "version:2.1.0"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/pyparsing-py3"
+  version: "version:3.0.7"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/attrs-py2_py3"
+  version: "version:21.4.0"
+>
+
+# Required by pytest==8.3.4
+wheel: <
+  name: "infra/python/wheels/exceptiongroup-py3"
+  version: "version:1.1.2"
+>

setup.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
-# Copyright 2019 The Android Open Source Project
+# Copyright (C) 2019 The Android Open Source Project
 #
-# Licensed under the Apache License, Version 2.0 (the 'License");
+# Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #

ssh.py

@@ -24,6 +24,7 @@ import sys
 import tempfile
 import time
 
+from git_command import git
 import platform_utils
 from repo_trace import Trace
 
@@ -51,14 +52,18 @@ def _parse_ssh_version(ver_str=None):
 
 @functools.lru_cache(maxsize=None)
 def version():
-    """return ssh version as a tuple"""
+    """Return ssh version as a tuple.
+
+    If ssh is not available, a FileNotFoundError will be raised.
+    """
     try:
         return _parse_ssh_version()
-    except FileNotFoundError:
+    except subprocess.CalledProcessError as e:
-        print("fatal: ssh not installed", file=sys.stderr)
+        print(
-        sys.exit(1)
+            "fatal: unable to detect ssh version"
-    except subprocess.CalledProcessError:
+            f" (code={e.returncode}, output={e.stdout})",
-        print("fatal: unable to detect ssh version", file=sys.stderr)
+            file=sys.stderr,
+        )
         sys.exit(1)
 
 
@@ -97,9 +102,18 @@ class ProxyManager:
         self._clients = manager.list()
         # Path to directory for holding master sockets.
         self._sock_path = None
+        # See if ssh is usable.
+        self._ssh_installed = False
 
     def __enter__(self):
         """Enter a new context."""
+        # Check which version of ssh is available.
+        try:
+            version()
+            self._ssh_installed = True
+        except FileNotFoundError:
+            self._ssh_installed = False
+
         return self
 
     def __exit__(self, exc_type, exc_value, traceback):
@@ -135,7 +149,7 @@ class ProxyManager:
         while True:
             try:
                 procs.pop(0)
-            except:  # noqa: E722
+            except IndexError:
                 break
 
     def close(self):
@@ -207,7 +221,33 @@ class ProxyManager:
                 # and print to the log there.
                 pass
 
-        command = command_base[:1] + ["-M", "-N"] + command_base[1:]
+        # Git protocol V2 is a new feature in git 2.18.0, made default in
+        # git 2.26.0
+        # It is faster and more efficient than V1.
+        # To enable it when using SSH, the environment variable GIT_PROTOCOL
+        # must be set in the SSH side channel when establishing the connection
+        # to the git server.
+        # See https://git-scm.com/docs/protocol-v2#_ssh_and_file_transport
+        # Normally git does this by itself. But here, where the SSH connection
+        # is established manually over ControlMaster via the repo-tool, it must
+        # be passed in explicitly instead.
+        # Based on https://git-scm.com/docs/gitprotocol-pack#_extra_parameters,
+        # GIT_PROTOCOL is considered an "Extra Parameter" and must be ignored
+        # by servers that do not understand it. This means that it is safe to
+        # set it even when connecting to older servers.
+        # It should also be safe to set the environment variable for older
+        # local git versions, since it is only part of the ssh side channel.
+        git_protocol_version = _get_git_protocol_version()
+        ssh_git_protocol_args = [
+            "-o",
+            f"SetEnv GIT_PROTOCOL=version={git_protocol_version}",
+        ]
+
+        command = (
+            command_base[:1]
+            + ["-M", "-N", *ssh_git_protocol_args]
+            + command_base[1:]
+        )
         p = None
         try:
             with Trace("Call to ssh: %s", " ".join(command)):
@@ -251,6 +291,9 @@ class ProxyManager:
 
     def preconnect(self, url):
         """If |uri| will create a ssh connection, setup the ssh master for it."""  # noqa: E501
+        if not self._ssh_installed:
+            return False
+
         m = URI_ALL.match(url)
         if m:
             scheme = m.group(1)
@@ -275,6 +318,9 @@ class ProxyManager:
 
         This has all the master sockets so clients can talk to them.
         """
+        if not self._ssh_installed:
+            return None
+
         if self._sock_path is None:
             if not create:
                 return None
@@ -289,3 +335,32 @@ class ProxyManager:
                 tempfile.mkdtemp("", "ssh-", tmp_dir), "master-" + tokens
             )
         return self._sock_path
+
+
+@functools.lru_cache(maxsize=1)
+def _get_git_protocol_version() -> str:
+    """Return the git protocol version.
+
+    The version is found by first reading the global git config.
+    If no git config for protocol version exists, try to deduce the default
+    protocol version based on the git version.
+
+    See https://git-scm.com/docs/gitprotocol-v2 for details.
+    """
+    try:
+        return subprocess.check_output(
+            ["git", "config", "--get", "--global", "protocol.version"],
+            encoding="utf-8",
+            stderr=subprocess.PIPE,
+        ).strip()
+    except subprocess.CalledProcessError as e:
+        if e.returncode == 1:
+            # Exit code 1 means that the git config key was not found.
+            # Try to imitate the defaults that git would have used.
+            git_version = git.version_tuple()
+            if git_version >= (2, 26, 0):
+                # Since git version 2.26, protocol v2 is the default.
+                return "2"
+            return "1"
+        # Other exit codes indicate error with reading the config.
+        raise

subcmds/abandon.py

@@ -48,7 +48,6 @@ It is equivalent to "git branch -D <branchname>".
     def _Options(self, p):
         p.add_option(
             "--all",
-            dest="all",
             action="store_true",
             help="delete all branches in all projects",
         )
@@ -70,8 +69,10 @@ It is equivalent to "git branch -D <branchname>".
         else:
             args.insert(0, "'All local branches'")
 
-    def _ExecuteOne(self, all_branches, nb, project):
+    @classmethod
+    def _ExecuteOne(cls, all_branches, nb, project_idx):
         """Abandon one project."""
+        project = cls.get_parallel_context()["projects"][project_idx]
         if all_branches:
             branches = project.GetBranches()
         else:
@@ -89,7 +90,7 @@ It is equivalent to "git branch -D <branchname>".
             if status is not None:
                 ret[name] = status
 
-        return (ret, project, errors)
+        return (ret, project_idx, errors)
 
     def Execute(self, opt, args):
         nb = args[0].split()
@@ -102,7 +103,8 @@ It is equivalent to "git branch -D <branchname>".
         _RelPath = lambda p: p.RelPath(local=opt.this_manifest_only)
 
         def _ProcessResults(_pool, pm, states):
-            for results, project, errors in states:
+            for results, project_idx, errors in states:
+                project = all_projects[project_idx]
                 for branch, status in results.items():
                     if status:
                         success[branch].append(project)
@@ -111,15 +113,18 @@ It is equivalent to "git branch -D <branchname>".
                 aggregate_errors.extend(errors)
                 pm.update(msg="")
 
-        self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = all_projects
-            functools.partial(self._ExecuteOne, opt.all, nb),
+            self.ExecuteInParallel(
-            all_projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                functools.partial(self._ExecuteOne, opt.all, nb),
-            output=Progress(
+                range(len(all_projects)),
-                f"Abandon {nb}", len(all_projects), quiet=opt.quiet
+                callback=_ProcessResults,
-            ),
+                output=Progress(
-        )
+                    f"Abandon {nb}", len(all_projects), quiet=opt.quiet
+                ),
+                chunksize=1,
+            )
 
         width = max(
             itertools.chain(

subcmds/branches.py

@@ -98,6 +98,22 @@ is shown, then the branch appears in all projects.
 """
     PARALLEL_JOBS = DEFAULT_LOCAL_JOBS
 
+    @classmethod
+    def _ExpandProjectToBranches(cls, project_idx):
+        """Expands a project into a list of branch names & associated info.
+
+        Args:
+            project_idx: project.Project index
+
+        Returns:
+            List[Tuple[str, git_config.Branch, int]]
+        """
+        branches = []
+        project = cls.get_parallel_context()["projects"][project_idx]
+        for name, b in project.GetBranches().items():
+            branches.append((name, b, project_idx))
+        return branches
+
     def Execute(self, opt, args):
         projects = self.GetProjects(
             args, all_manifests=not opt.this_manifest_only
@@ -107,17 +123,20 @@ is shown, then the branch appears in all projects.
         project_cnt = len(projects)
 
         def _ProcessResults(_pool, _output, results):
-            for name, b in itertools.chain.from_iterable(results):
+            for name, b, project_idx in itertools.chain.from_iterable(results):
+                b.project = projects[project_idx]
                 if name not in all_branches:
                     all_branches[name] = BranchInfo(name)
                 all_branches[name].add(b)
 
-        self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = projects
-            expand_project_to_branches,
+            self.ExecuteInParallel(
-            projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                self._ExpandProjectToBranches,
-        )
+                range(len(projects)),
+                callback=_ProcessResults,
+            )
 
         names = sorted(all_branches)
 
@@ -148,7 +167,10 @@ is shown, then the branch appears in all projects.
             else:
                 published = " "
 
-            hdr("%c%c %-*s" % (current, published, width, name))
+            # A branch name can contain a percent sign, so we need to escape it.
+            # Escape after f-string formatting to properly account for leading
+            # spaces.
+            hdr(f"{current}{published} {name:{width}}".replace("%", "%%"))
             out.write(" |")
 
             _RelPath = lambda p: p.RelPath(local=opt.this_manifest_only)
@@ -191,19 +213,3 @@ is shown, then the branch appears in all projects.
             else:
                 out.write(" in all projects")
             out.nl()
-
-
-def expand_project_to_branches(project):
-    """Expands a project into a list of branch names & associated information.
-
-    Args:
-        project: project.Project
-
-    Returns:
-        List[Tuple[str, git_config.Branch]]
-    """
-    branches = []
-    for name, b in project.GetBranches().items():
-        b.project = project
-        branches.append((name, b))
-    return branches

subcmds/checkout.py

@@ -20,7 +20,6 @@ from command import DEFAULT_LOCAL_JOBS
 from error import GitError
 from error import RepoExitError
 from progress import Progress
-from project import Project
 from repo_logging import RepoLogger
 
 
@@ -30,7 +29,7 @@ logger = RepoLogger(__file__)
 class CheckoutBranchResult(NamedTuple):
     # Whether the Project is on the branch (i.e. branch exists and no errors)
     result: bool
-    project: Project
+    project_idx: int
     error: Exception
 
 
@@ -62,15 +61,17 @@ The command is equivalent to:
         if not args:
             self.Usage()
 
-    def _ExecuteOne(self, nb, project):
+    @classmethod
+    def _ExecuteOne(cls, nb, project_idx):
         """Checkout one project."""
         error = None
         result = None
+        project = cls.get_parallel_context()["projects"][project_idx]
         try:
             result = project.CheckoutBranch(nb)
         except GitError as e:
             error = e
-        return CheckoutBranchResult(result, project, error)
+        return CheckoutBranchResult(result, project_idx, error)
 
     def Execute(self, opt, args):
         nb = args[0]
@@ -83,22 +84,25 @@ The command is equivalent to:
 
         def _ProcessResults(_pool, pm, results):
             for result in results:
+                project = all_projects[result.project_idx]
                 if result.error is not None:
                     err.append(result.error)
-                    err_projects.append(result.project)
+                    err_projects.append(project)
                 elif result.result:
-                    success.append(result.project)
+                    success.append(project)
                 pm.update(msg="")
 
-        self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = all_projects
-            functools.partial(self._ExecuteOne, nb),
+            self.ExecuteInParallel(
-            all_projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                functools.partial(self._ExecuteOne, nb),
-            output=Progress(
+                range(len(all_projects)),
-                f"Checkout {nb}", len(all_projects), quiet=opt.quiet
+                callback=_ProcessResults,
-            ),
+                output=Progress(
-        )
+                    f"Checkout {nb}", len(all_projects), quiet=opt.quiet
+                ),
+            )
 
         if err_projects:
             for p in err_projects:

subcmds/diff.py

@@ -35,12 +35,12 @@ to the Unix 'patch' command.
         p.add_option(
             "-u",
             "--absolute",
-            dest="absolute",
             action="store_true",
             help="paths are relative to the repository root",
         )
 
-    def _ExecuteOne(self, absolute, local, project):
+    @classmethod
+    def _ExecuteOne(cls, absolute, local, project_idx):
         """Obtains the diff for a specific project.
 
         Args:
@@ -48,12 +48,13 @@ to the Unix 'patch' command.
             local: a boolean, if True, the path is relative to the local
                 (sub)manifest.  If false, the path is relative to the outermost
                 manifest.
-            project: Project to get status of.
+            project_idx: Project index to get status of.
 
         Returns:
             The status of the project.
         """
         buf = io.StringIO()
+        project = cls.get_parallel_context()["projects"][project_idx]
         ret = project.PrintWorkTreeDiff(absolute, output_redir=buf, local=local)
         return (ret, buf.getvalue())
 
@@ -71,12 +72,15 @@ to the Unix 'patch' command.
                     ret = 1
             return ret
 
-        return self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = all_projects
-            functools.partial(
+            return self.ExecuteInParallel(
-                self._ExecuteOne, opt.absolute, opt.this_manifest_only
+                opt.jobs,
-            ),
+                functools.partial(
-            all_projects,
+                    self._ExecuteOne, opt.absolute, opt.this_manifest_only
-            callback=_ProcessResults,
+                ),
-            ordered=True,
+                range(len(all_projects)),
-        )
+                callback=_ProcessResults,
+                ordered=True,
+                chunksize=1,
+            )

subcmds/diffmanifests.py

@@ -67,7 +67,9 @@ synced and their revisions won't be found.
 
     def _Options(self, p):
         p.add_option(
-            "--raw", dest="raw", action="store_true", help="display raw diff"
+            "--raw",
+            action="store_true",
+            help="display raw diff",
         )
         p.add_option(
             "--no-color",
@@ -78,7 +80,6 @@ synced and their revisions won't be found.
         )
         p.add_option(
             "--pretty-format",
-            dest="pretty_format",
             action="store",
             metavar="<FORMAT>",
             help="print the log using a custom git pretty format string",
@@ -233,9 +234,9 @@ synced and their revisions won't be found.
             )
             self.printRevision = self.out.nofmt_printer("revision", fg="yellow")
         else:
-            self.printProject = (
+            self.printProject = self.printAdded = self.printRemoved = (
-                self.printAdded
+                self.printRevision
-            ) = self.printRemoved = self.printRevision = self.printText
+            ) = self.printText
 
         manifest1 = RepoClient(self.repodir)
         manifest1.Override(args[0], load_local_manifests=False)

subcmds/download.py

@@ -60,7 +60,6 @@ If no project is specified try to use current directory as a project.
         p.add_option(
             "-r",
             "--revert",
-            dest="revert",
             action="store_true",
             help="revert instead of checkout",
         )

subcmds/forall.py

@@ -15,7 +15,6 @@
 import errno
 import functools
 import io
-import multiprocessing
 import os
 import re
 import signal
@@ -26,7 +25,6 @@ from color import Coloring
 from command import Command
 from command import DEFAULT_LOCAL_JOBS
 from command import MirrorSafeCommand
-from command import WORKER_BATCH_SIZE
 from error import ManifestInvalidRevisionError
 from repo_logging import RepoLogger
 
@@ -143,7 +141,6 @@ without iterating through the remaining projects.
         p.add_option(
             "-r",
             "--regex",
-            dest="regex",
             action="store_true",
             help="execute the command only on projects matching regex or "
             "wildcard expression",
@@ -151,7 +148,6 @@ without iterating through the remaining projects.
         p.add_option(
             "-i",
             "--inverse-regex",
-            dest="inverse_regex",
             action="store_true",
             help="execute the command only on projects not matching regex or "
             "wildcard expression",
@@ -159,22 +155,20 @@ without iterating through the remaining projects.
         p.add_option(
             "-g",
             "--groups",
-            dest="groups",
             help="execute the command only on projects matching the specified "
             "groups",
         )
         p.add_option(
             "-c",
             "--command",
-            help="command (and arguments) to execute",
             dest="command",
+            help="command (and arguments) to execute",
             action="callback",
             callback=self._cmd_option,
         )
         p.add_option(
             "-e",
             "--abort-on-errors",
-            dest="abort_on_errors",
             action="store_true",
             help="abort if a command exits unsuccessfully",
         )
@@ -241,7 +235,6 @@ without iterating through the remaining projects.
                     cmd.insert(cmd.index(cn) + 1, "--color")
 
         mirror = self.manifest.IsMirror
-        rc = 0
 
         smart_sync_manifest_name = "smart_sync_override.xml"
         smart_sync_manifest_path = os.path.join(
@@ -264,35 +257,44 @@ without iterating through the remaining projects.
 
         os.environ["REPO_COUNT"] = str(len(projects))
 
+        def _ProcessResults(_pool, _output, results):
+            rc = 0
+            first = True
+            for r, output in results:
+                if output:
+                    if first:
+                        first = False
+                    elif opt.project_header:
+                        print()
+                    # To simplify the DoWorkWrapper, take care of automatic
+                    # newlines.
+                    end = "\n"
+                    if output[-1] == "\n":
+                        end = ""
+                    print(output, end=end)
+                rc = rc or r
+                if r != 0 and opt.abort_on_errors:
+                    raise Exception("Aborting due to previous error")
+            return rc
+
         try:
             config = self.manifest.manifestProject.config
-            with multiprocessing.Pool(opt.jobs, InitWorker) as pool:
+            with self.ParallelContext():
-                results_it = pool.imap(
+                self.get_parallel_context()["projects"] = projects
+                rc = self.ExecuteInParallel(
+                    opt.jobs,
                     functools.partial(
-                        DoWorkWrapper, mirror, opt, cmd, shell, config
+                        self.DoWorkWrapper, mirror, opt, cmd, shell, config
                     ),
-                    enumerate(projects),
+                    range(len(projects)),
-                    chunksize=WORKER_BATCH_SIZE,
+                    callback=_ProcessResults,
+                    ordered=True,
+                    initializer=self.InitWorker,
+                    chunksize=1,
                 )
-                first = True
-                for r, output in results_it:
-                    if output:
-                        if first:
-                            first = False
-                        elif opt.project_header:
-                            print()
-                        # To simplify the DoWorkWrapper, take care of automatic
-                        # newlines.
-                        end = "\n"
-                        if output[-1] == "\n":
-                            end = ""
-                        print(output, end=end)
-                    rc = rc or r
-                    if r != 0 and opt.abort_on_errors:
-                        raise Exception("Aborting due to previous error")
         except (KeyboardInterrupt, WorkerKeyboardInterrupt):
             # Catch KeyboardInterrupt raised inside and outside of workers
-            rc = rc or errno.EINTR
+            rc = errno.EINTR
         except Exception as e:
             # Catch any other exceptions raised
             logger.error(
@@ -300,35 +302,35 @@ without iterating through the remaining projects.
                 type(e).__name__,
                 e,
             )
-            rc = rc or getattr(e, "errno", 1)
+            rc = getattr(e, "errno", 1)
         if rc != 0:
             sys.exit(rc)
 
+    @classmethod
+    def InitWorker(cls):
+        signal.signal(signal.SIGINT, signal.SIG_IGN)
+
+    @classmethod
+    def DoWorkWrapper(cls, mirror, opt, cmd, shell, config, project_idx):
+        """A wrapper around the DoWork() method.
+
+        Catch the KeyboardInterrupt exceptions here and re-raise them as a
+        different, ``Exception``-based exception to stop it flooding the console
+        with stacktraces and making the parent hang indefinitely.
+
+        """
+        project = cls.get_parallel_context()["projects"][project_idx]
+        try:
+            return DoWork(project, mirror, opt, cmd, shell, project_idx, config)
+        except KeyboardInterrupt:
+            print("%s: Worker interrupted" % project.name)
+            raise WorkerKeyboardInterrupt()
+
 
 class WorkerKeyboardInterrupt(Exception):
     """Keyboard interrupt exception for worker processes."""
 
 
-def InitWorker():
-    signal.signal(signal.SIGINT, signal.SIG_IGN)
-
-
-def DoWorkWrapper(mirror, opt, cmd, shell, config, args):
-    """A wrapper around the DoWork() method.
-
-    Catch the KeyboardInterrupt exceptions here and re-raise them as a
-    different, ``Exception``-based exception to stop it flooding the console
-    with stacktraces and making the parent hang indefinitely.
-
-    """
-    cnt, project = args
-    try:
-        return DoWork(project, mirror, opt, cmd, shell, cnt, config)
-    except KeyboardInterrupt:
-        print("%s: Worker interrupted" % project.name)
-        raise WorkerKeyboardInterrupt()
-
-
 def DoWork(project, mirror, opt, cmd, shell, cnt, config):
     env = os.environ.copy()
 

subcmds/gc.py

@@ -0,0 +1,312 @@
+# Copyright (C) 2024 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+from typing import List, Set
+
+from command import Command
+from git_command import git_require
+from git_command import GitCommand
+import platform_utils
+from progress import Progress
+from project import Project
+
+
+class Gc(Command):
+    COMMON = True
+    helpSummary = "Cleaning up internal repo and Git state."
+    helpUsage = """
+%prog
+"""
+
+    def _Options(self, p):
+        p.add_option(
+            "-n",
+            "--dry-run",
+            dest="dryrun",
+            default=False,
+            action="store_true",
+            help="do everything except actually delete",
+        )
+        p.add_option(
+            "-y",
+            "--yes",
+            default=False,
+            action="store_true",
+            help="answer yes to all safe prompts",
+        )
+        p.add_option(
+            "--repack",
+            default=False,
+            action="store_true",
+            help="repack all projects that use partial clone with "
+            "filter=blob:none",
+        )
+
+    def _find_git_to_delete(
+        self, to_keep: Set[str], start_dir: str
+    ) -> Set[str]:
+        """Searches no longer needed ".git" directories.
+
+        Scans the file system starting from `start_dir` and removes all
+        directories that end with ".git" that are not in the `to_keep` set.
+        """
+        to_delete = set()
+        for root, dirs, _ in platform_utils.walk(start_dir):
+            for directory in dirs:
+                if not directory.endswith(".git"):
+                    continue
+
+                path = os.path.join(root, directory)
+                if path not in to_keep:
+                    to_delete.add(path)
+
+        return to_delete
+
+    def delete_unused_projects(self, projects: List[Project], opt):
+        print(f"Scanning filesystem under {self.repodir}...")
+
+        project_paths = set()
+        project_object_paths = set()
+
+        for project in projects:
+            project_paths.add(project.gitdir)
+            project_object_paths.add(project.objdir)
+
+        to_delete = self._find_git_to_delete(
+            project_paths, os.path.join(self.repodir, "projects")
+        )
+
+        to_delete.update(
+            self._find_git_to_delete(
+                project_object_paths,
+                os.path.join(self.repodir, "project-objects"),
+            )
+        )
+
+        if not to_delete:
+            print("Nothing to clean up.")
+            return 0
+
+        print("Identified the following projects are no longer used:")
+        print("\n".join(to_delete))
+        print("")
+        if not opt.yes:
+            print(
+                "If you proceed, any local commits in those projects will be "
+                "destroyed!"
+            )
+            ask = input("Proceed? [y/N] ")
+            if ask.lower() != "y":
+                return 1
+
+        pm = Progress(
+            "Deleting",
+            len(to_delete),
+            delay=False,
+            quiet=opt.quiet,
+            show_elapsed=True,
+            elide=True,
+        )
+
+        for path in to_delete:
+            if opt.dryrun:
+                print(f"\nWould have deleted ${path}")
+            else:
+                tmp_path = os.path.join(
+                    os.path.dirname(path),
+                    f"to_be_deleted_{os.path.basename(path)}",
+                )
+                platform_utils.rename(path, tmp_path)
+                platform_utils.rmtree(tmp_path)
+            pm.update(msg=path)
+        pm.end()
+
+        return 0
+
+    def _generate_promisor_files(self, pack_dir: str):
+        """Generates promisor files for all pack files in the given directory.
+
+        Promisor files are empty files with the same name as the corresponding
+        pack file but with the ".promisor" extension. They are used by Git.
+        """
+        for root, _, files in platform_utils.walk(pack_dir):
+            for file in files:
+                if not file.endswith(".pack"):
+                    continue
+                with open(os.path.join(root, f"{file[:-4]}promisor"), "w"):
+                    pass
+
+    def repack_projects(self, projects: List[Project], opt):
+        repack_projects = []
+        # Find all projects eligible for repacking:
+        # - can't be shared
+        # - have a specific fetch filter
+        for project in projects:
+            if project.config.GetBoolean("extensions.preciousObjects"):
+                continue
+            if not project.clone_depth:
+                continue
+            if project.manifest.CloneFilterForDepth != "blob:none":
+                continue
+
+            repack_projects.append(project)
+
+        if opt.dryrun:
+            print(f"Would have repacked {len(repack_projects)} projects.")
+            return 0
+
+        pm = Progress(
+            "Repacking (this will take a while)",
+            len(repack_projects),
+            delay=False,
+            quiet=opt.quiet,
+            show_elapsed=True,
+            elide=True,
+        )
+
+        for project in repack_projects:
+            pm.update(msg=f"{project.name}")
+
+            pack_dir = os.path.join(project.gitdir, "tmp_repo_repack")
+            if os.path.isdir(pack_dir):
+                platform_utils.rmtree(pack_dir)
+            os.mkdir(pack_dir)
+
+            # Prepare workspace for repacking - remove all unreachable refs and
+            # their objects.
+            GitCommand(
+                project,
+                ["reflog", "expire", "--expire-unreachable=all"],
+                verify_command=True,
+            ).Wait()
+            pm.update(msg=f"{project.name} | gc", inc=0)
+            GitCommand(
+                project,
+                ["gc"],
+                verify_command=True,
+            ).Wait()
+
+            # Get all objects that are reachable from the remote, and pack them.
+            pm.update(msg=f"{project.name} | generating list of objects", inc=0)
+            remote_objects_cmd = GitCommand(
+                project,
+                [
+                    "rev-list",
+                    "--objects",
+                    "--missing=allow-promisor",
+                    f"--remotes={project.remote.name}",
+                    "--filter=blob:none",
+                    "--tags",
+                ],
+                capture_stdout=True,
+                verify_command=True,
+            )
+
+            # Get all local objects and pack them.
+            local_head_objects_cmd = GitCommand(
+                project,
+                [
+                    "rev-list",
+                    "--objects",
+                    "--missing=allow-promisor",
+                    "HEAD^{tree}",
+                ],
+                capture_stdout=True,
+                verify_command=True,
+            )
+            local_objects_cmd = GitCommand(
+                project,
+                [
+                    "rev-list",
+                    "--objects",
+                    "--missing=allow-promisor",
+                    "--all",
+                    "--reflog",
+                    "--indexed-objects",
+                    "--not",
+                    f"--remotes={project.remote.name}",
+                    "--tags",
+                ],
+                capture_stdout=True,
+                verify_command=True,
+            )
+
+            remote_objects_cmd.Wait()
+
+            pm.update(msg=f"{project.name} | remote repack", inc=0)
+            GitCommand(
+                project,
+                ["pack-objects", os.path.join(pack_dir, "pack")],
+                input=remote_objects_cmd.stdout,
+                capture_stderr=True,
+                capture_stdout=True,
+                verify_command=True,
+            ).Wait()
+
+            # create promisor file for each pack file
+            self._generate_promisor_files(pack_dir)
+
+            local_head_objects_cmd.Wait()
+            local_objects_cmd.Wait()
+
+            pm.update(msg=f"{project.name} | local repack", inc=0)
+            GitCommand(
+                project,
+                ["pack-objects", os.path.join(pack_dir, "pack")],
+                input=local_head_objects_cmd.stdout + local_objects_cmd.stdout,
+                capture_stderr=True,
+                capture_stdout=True,
+                verify_command=True,
+            ).Wait()
+
+            # Swap the old pack directory with the new one.
+            platform_utils.rename(
+                os.path.join(project.objdir, "objects", "pack"),
+                os.path.join(project.objdir, "objects", "pack_old"),
+            )
+            platform_utils.rename(
+                pack_dir,
+                os.path.join(project.objdir, "objects", "pack"),
+            )
+            platform_utils.rmtree(
+                os.path.join(project.objdir, "objects", "pack_old")
+            )
+
+        pm.end()
+        return 0
+
+    def Execute(self, opt, args):
+        projects: List[Project] = self.GetProjects(
+            args, all_manifests=not opt.this_manifest_only
+        )
+
+        # If the user specified projects, fetch the global list separately
+        # to avoid deleting untargeted projects.
+        if args:
+            all_projects = self.GetProjects(
+                [], all_manifests=not opt.this_manifest_only
+            )
+        else:
+            all_projects = projects
+
+        ret = self.delete_unused_projects(all_projects, opt)
+        if ret != 0:
+            return ret
+
+        if opt.repack:
+            git_require((2, 17, 0), fail=True, msg="--repack")
+            ret = self.repack_projects(projects, opt)
+
+        return ret

subcmds/grep.py

@@ -23,7 +23,6 @@ from error import GitError
 from error import InvalidArgumentsError
 from error import SilentRepoExitError
 from git_command import GitCommand
-from project import Project
 from repo_logging import RepoLogger
 
 
@@ -40,7 +39,7 @@ class GrepColoring(Coloring):
 class ExecuteOneResult(NamedTuple):
     """Result from an execute instance."""
 
-    project: Project
+    project_idx: int
     rc: int
     stdout: str
     stderr: str
@@ -94,7 +93,7 @@ contain a line that matches both expressions:
         pt = getattr(parser.values, "cmd_argv", None)
         if pt is None:
             pt = []
-            setattr(parser.values, "cmd_argv", pt)
+            parser.values.cmd_argv = pt
 
         if opt_str == "-(":
             pt.append("(")
@@ -121,7 +120,6 @@ contain a line that matches both expressions:
         g.add_option(
             "-r",
             "--revision",
-            dest="revision",
             action="append",
             metavar="TREEish",
             help="Search TREEish, instead of the work tree",
@@ -262,8 +260,10 @@ contain a line that matches both expressions:
             help="Show only file names not containing matching lines",
         )
 
-    def _ExecuteOne(self, cmd_argv, project):
+    @classmethod
+    def _ExecuteOne(cls, cmd_argv, project_idx):
         """Process one project."""
+        project = cls.get_parallel_context()["projects"][project_idx]
         try:
             p = GitCommand(
                 project,
@@ -274,7 +274,7 @@ contain a line that matches both expressions:
                 verify_command=True,
             )
         except GitError as e:
-            return ExecuteOneResult(project, -1, None, str(e), e)
+            return ExecuteOneResult(project_idx, -1, None, str(e), e)
 
         try:
             error = None
@@ -282,10 +282,12 @@ contain a line that matches both expressions:
         except GitError as e:
             rc = 1
             error = e
-        return ExecuteOneResult(project, rc, p.stdout, p.stderr, error)
+        return ExecuteOneResult(project_idx, rc, p.stdout, p.stderr, error)
 
     @staticmethod
-    def _ProcessResults(full_name, have_rev, opt, _pool, out, results):
+    def _ProcessResults(
+        full_name, have_rev, opt, projects, _pool, out, results
+    ):
         git_failed = False
         bad_rev = False
         have_match = False
@@ -293,9 +295,10 @@ contain a line that matches both expressions:
         errors = []
 
         for result in results:
+            project = projects[result.project_idx]
             if result.rc < 0:
                 git_failed = True
-                out.project("--- project %s ---" % _RelPath(result.project))
+                out.project("--- project %s ---" % _RelPath(project))
                 out.nl()
                 out.fail("%s", result.stderr)
                 out.nl()
@@ -311,9 +314,7 @@ contain a line that matches both expressions:
                     ):
                         bad_rev = True
                     else:
-                        out.project(
+                        out.project("--- project %s ---" % _RelPath(project))
-                            "--- project %s ---" % _RelPath(result.project)
-                        )
                         out.nl()
                         out.fail("%s", result.stderr.strip())
                         out.nl()
@@ -331,13 +332,13 @@ contain a line that matches both expressions:
                     rev, line = line.split(":", 1)
                     out.write("%s", rev)
                     out.write(":")
-                    out.project(_RelPath(result.project))
+                    out.project(_RelPath(project))
                     out.write("/")
                     out.write("%s", line)
                     out.nl()
             elif full_name:
                 for line in r:
-                    out.project(_RelPath(result.project))
+                    out.project(_RelPath(project))
                     out.write("/")
                     out.write("%s", line)
                     out.nl()
@@ -381,16 +382,19 @@ contain a line that matches both expressions:
             cmd_argv.extend(opt.revision)
         cmd_argv.append("--")
 
-        git_failed, bad_rev, have_match, errors = self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = projects
-            functools.partial(self._ExecuteOne, cmd_argv),
+            git_failed, bad_rev, have_match, errors = self.ExecuteInParallel(
-            projects,
+                opt.jobs,
-            callback=functools.partial(
+                functools.partial(self._ExecuteOne, cmd_argv),
-                self._ProcessResults, full_name, have_rev, opt
+                range(len(projects)),
-            ),
+                callback=functools.partial(
-            output=out,
+                    self._ProcessResults, full_name, have_rev, opt, projects
-            ordered=True,
+                ),
-        )
+                output=out,
+                ordered=True,
+                chunksize=1,
+            )
 
         if git_failed:
             raise GrepCommandError(

subcmds/help.py

@@ -59,7 +59,7 @@ Displays detailed usage information about a command.
 
     def PrintAllCommandsBody(self):
         print("The complete list of recognized repo commands is:")
-        commandNames = list(sorted(all_commands))
+        commandNames = sorted(all_commands)
         self._PrintCommands(commandNames)
         print(
             "See 'repo help <command>' for more information on a "
@@ -74,10 +74,8 @@ Displays detailed usage information about a command.
     def PrintCommonCommandsBody(self):
         print("The most commonly used repo commands are:")
 
-        commandNames = list(
+        commandNames = sorted(
-            sorted(
+            name for name, command in all_commands.items() if command.COMMON
-                name for name, command in all_commands.items() if command.COMMON
-            )
         )
         self._PrintCommands(commandNames)
 

subcmds/info.py

@@ -43,14 +43,12 @@ class Info(PagedCommand):
         p.add_option(
             "-o",
             "--overview",
-            dest="overview",
             action="store_true",
             help="show overview of all local commits",
         )
         p.add_option(
             "-c",
             "--current-branch",
-            dest="current_branch",
             action="store_true",
             help="consider only checked out branches",
         )
@@ -90,7 +88,7 @@ class Info(PagedCommand):
             self.manifest = self.manifest.outer_client
         manifestConfig = self.manifest.manifestProject.config
         mergeBranch = manifestConfig.GetBranch("default").merge
-        manifestGroups = self.manifest.GetGroupsStr()
+        manifestGroups = self.manifest.GetManifestGroupsStr()
 
         self.heading("Manifest branch: ")
         if self.manifest.default.revisionExpr:
@@ -104,6 +102,11 @@ class Info(PagedCommand):
         self.heading("Manifest groups: ")
         self.headtext(manifestGroups)
         self.out.nl()
+        sp = self.manifest.superproject
+        srev = sp.commit_id if sp and sp.commit_id else "None"
+        self.heading("Superproject revision: ")
+        self.headtext(srev)
+        self.out.nl()
 
         self.printSeparator()
 

subcmds/init.py

@@ -21,10 +21,9 @@ from command import MirrorSafeCommand
 from error import RepoUnhandledExceptionError
 from error import UpdateManifestError
 from git_command import git_require
-from git_command import MIN_GIT_VERSION_HARD
-from git_command import MIN_GIT_VERSION_SOFT
 from repo_logging import RepoLogger
 from wrapper import Wrapper
+from wrapper import WrapperDir
 
 
 logger = RepoLogger(__file__)
@@ -53,6 +52,10 @@ The optional -b argument can be used to select the manifest branch
 to checkout and use.  If no branch is specified, the remote's default
 branch is used.  This is equivalent to using -b HEAD.
 
+The optional --manifest-upstream-branch argument can be used when a commit is
+provided to --manifest-branch (or -b), to specify the name of the git ref in
+which the commit can be found.
+
 The optional -m argument can be used to specify an alternate manifest
 to be used. If no manifest is specified, the manifest default.xml
 will be used.
@@ -124,6 +127,7 @@ to update the working directory files.
         return {
             "REPO_MANIFEST_URL": "manifest_url",
             "REPO_MIRROR_LOCATION": "reference",
+            "REPO_GIT_LFS": "git_lfs",
         }
 
     def _SyncManifest(self, opt):
@@ -136,6 +140,7 @@ to update the working directory files.
         # manifest project is special and is created when instantiating the
         # manifest which happens before we parse options.
         self.manifest.manifestProject.clone_depth = opt.manifest_depth
+        self.manifest.manifestProject.upstream = opt.manifest_upstream_branch
         clone_filter_for_depth = (
             "blob:none" if (_REPO_ALLOW_SHALLOW == "0") else None
         )
@@ -318,6 +323,12 @@ to update the working directory files.
                 " be used with --standalone-manifest."
             )
 
+        if opt.manifest_upstream_branch and opt.manifest_branch is None:
+            self.OptionParser.error(
+                "--manifest-upstream-branch cannot be used without "
+                "--manifest-branch."
+            )
+
         if args:
             if opt.manifest_url:
                 self.OptionParser.error(
@@ -331,13 +342,17 @@ to update the working directory files.
                 self.OptionParser.error("too many arguments to init")
 
     def Execute(self, opt, args):
-        git_require(MIN_GIT_VERSION_HARD, fail=True)
+        wrapper = Wrapper()
-        if not git_require(MIN_GIT_VERSION_SOFT):
+
+        reqs = wrapper.Requirements.from_dir(WrapperDir())
+        git_require(reqs.get_hard_ver("git"), fail=True)
+        min_git_version_soft = reqs.get_soft_ver("git")
+        if not git_require(min_git_version_soft):
             logger.warning(
                 "repo: warning: git-%s+ will soon be required; "
                 "please upgrade your version of git to maintain "
                 "support.",
-                ".".join(str(x) for x in MIN_GIT_VERSION_SOFT),
+                ".".join(str(x) for x in min_git_version_soft),
             )
 
         rp = self.manifest.repoProject
@@ -350,7 +365,6 @@ to update the working directory files.
 
         # Handle new --repo-rev requests.
         if opt.repo_rev:
-            wrapper = Wrapper()
             try:
                 remote_ref, rev = wrapper.check_repo_rev(
                     rp.worktree,

subcmds/list.py

@@ -40,7 +40,6 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
         p.add_option(
             "-r",
             "--regex",
-            dest="regex",
             action="store_true",
             help="filter the project list based on regex or wildcard matching "
             "of strings",
@@ -48,7 +47,6 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
         p.add_option(
             "-g",
             "--groups",
-            dest="groups",
             help="filter the project list based on the groups the project is "
             "in",
         )
@@ -61,21 +59,18 @@ This is similar to running: repo forall -c 'echo "$REPO_PATH : $REPO_PROJECT"'.
         p.add_option(
             "-n",
             "--name-only",
-            dest="name_only",
             action="store_true",
             help="display only the name of the repository",
         )
         p.add_option(
             "-p",
             "--path-only",
-            dest="path_only",
             action="store_true",
             help="display only the path of the repository",
         )
         p.add_option(
             "-f",
             "--fullpath",
-            dest="fullpath",
             action="store_true",
             help="display the full work tree path instead of the relative path",
         )

subcmds/manifest.py

@@ -12,7 +12,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import enum
 import json
+import optparse
 import os
 import sys
 
@@ -23,6 +25,16 @@ from repo_logging import RepoLogger
 logger = RepoLogger(__file__)
 
 
+class OutputFormat(enum.Enum):
+    """Type for the requested output format."""
+
+    # Canonicalized manifest in XML format.
+    XML = enum.auto()
+
+    # Canonicalized manifest in JSON format.
+    JSON = enum.auto()
+
+
 class Manifest(PagedCommand):
     COMMON = False
     helpSummary = "Manifest inspection utility"
@@ -42,6 +54,10 @@ revisions set to the current commit hash.  These are known as
 In this case, the 'upstream' attribute is set to the ref we were on
 when the manifest was generated.  The 'dest-branch' attribute is set
 to indicate the remote ref to push changes to via 'repo upload'.
+
+Multiple output formats are supported via --format.  The default output
+is XML, and formats are generally "condensed".  Use --pretty for more
+human-readable variations.
 """
 
     @property
@@ -86,11 +102,21 @@ to indicate the remote ref to push changes to via 'repo upload'.
             "(only of use if the branch names for a sha1 manifest are "
             "sensitive)",
         )
+        # Replaced with --format=json.  Kept for backwards compatibility.
+        # Can delete in Jun 2026 or later.
         p.add_option(
             "--json",
-            default=False,
+            action="store_const",
-            action="store_true",
+            dest="format",
-            help="output manifest in JSON format (experimental)",
+            const=OutputFormat.JSON.name.lower(),
+            help=optparse.SUPPRESS_HELP,
+        )
+        formats = tuple(x.lower() for x in OutputFormat.__members__.keys())
+        p.add_option(
+            "--format",
+            default=OutputFormat.XML.name.lower(),
+            choices=formats,
+            help=f"output format: {', '.join(formats)} (default: %default)",
         )
         p.add_option(
             "--pretty",
@@ -108,7 +134,6 @@ to indicate the remote ref to push changes to via 'repo upload'.
         p.add_option(
             "-o",
             "--output-file",
-            dest="output_file",
             default="-",
             help="file to save the manifest to. (Filename prefix for "
             "multi-tree.)",
@@ -121,6 +146,8 @@ to indicate the remote ref to push changes to via 'repo upload'.
         if opt.manifest_name:
             self.manifest.Override(opt.manifest_name, False)
 
+        output_format = OutputFormat[opt.format.upper()]
+
         for manifest in self.ManifestList(opt):
             output_file = opt.output_file
             if output_file == "-":
@@ -135,8 +162,7 @@ to indicate the remote ref to push changes to via 'repo upload'.
 
             manifest.SetUseLocalManifests(not opt.ignore_local_manifests)
 
-            if opt.json:
+            if output_format == OutputFormat.JSON:
-                logger.warning("warning: --json is experimental!")
                 doc = manifest.ToDict(
                     peg_rev=opt.peg_rev,
                     peg_rev_upstream=opt.peg_rev_upstream,
@@ -152,7 +178,7 @@ to indicate the remote ref to push changes to via 'repo upload'.
                     "separators": (",", ": ") if opt.pretty else (",", ":"),
                     "sort_keys": True,
                 }
-                fd.write(json.dumps(doc, **json_settings))
+                fd.write(json.dumps(doc, **json_settings) + "\n")
             else:
                 manifest.Save(
                     fd,

subcmds/overview.py

@@ -37,7 +37,6 @@ are displayed.
         p.add_option(
             "-c",
             "--current-branch",
-            dest="current_branch",
             action="store_true",
             help="consider only checked out branches",
         )

subcmds/prune.py

@@ -27,8 +27,10 @@ class Prune(PagedCommand):
 """
     PARALLEL_JOBS = DEFAULT_LOCAL_JOBS
 
-    def _ExecuteOne(self, project):
+    @classmethod
+    def _ExecuteOne(cls, project_idx):
         """Process one project."""
+        project = cls.get_parallel_context()["projects"][project_idx]
         return project.PruneHeads()
 
     def Execute(self, opt, args):
@@ -41,13 +43,15 @@ class Prune(PagedCommand):
         def _ProcessResults(_pool, _output, results):
             return list(itertools.chain.from_iterable(results))
 
-        all_branches = self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = projects
-            self._ExecuteOne,
+            all_branches = self.ExecuteInParallel(
-            projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                self._ExecuteOne,
-            ordered=True,
+                range(len(projects)),
-        )
+                callback=_ProcessResults,
+                ordered=True,
+            )
 
         if not all_branches:
             return

subcmds/rebase.py

@@ -47,21 +47,18 @@ branch but need to incorporate new upstream changes "underneath" them.
         g.add_option(
             "-i",
             "--interactive",
-            dest="interactive",
             action="store_true",
             help="interactive rebase (single project only)",
         )
 
         p.add_option(
             "--fail-fast",
-            dest="fail_fast",
             action="store_true",
             help="stop rebasing after first error is hit",
         )
         p.add_option(
             "-f",
             "--force-rebase",
-            dest="force_rebase",
             action="store_true",
             help="pass --force-rebase to git rebase",
         )
@@ -74,27 +71,23 @@ branch but need to incorporate new upstream changes "underneath" them.
         )
         p.add_option(
             "--autosquash",
-            dest="autosquash",
             action="store_true",
             help="pass --autosquash to git rebase",
         )
         p.add_option(
             "--whitespace",
-            dest="whitespace",
             action="store",
             metavar="WS",
             help="pass --whitespace to git rebase",
         )
         p.add_option(
             "--auto-stash",
-            dest="auto_stash",
             action="store_true",
             help="stash local modifications before starting",
         )
         p.add_option(
             "-m",
             "--onto-manifest",
-            dest="onto_manifest",
             action="store_true",
             help="rebase onto the manifest version instead of upstream "
             "HEAD (this helps to make sure the local tree stays "

subcmds/selfupdate.py

@@ -54,7 +54,6 @@ need to be performed by an end-user.
         )
         g.add_option(
             "--repo-upgraded",
-            dest="repo_upgraded",
             action="store_true",
             help=optparse.SUPPRESS_HELP,
         )

subcmds/stage.py

@@ -46,7 +46,6 @@ The '%prog' command stages files to prepare the next commit.
         g.add_option(
             "-i",
             "--interactive",
-            dest="interactive",
             action="store_true",
             help="use interactive staging",
         )

subcmds/start.py

@@ -21,7 +21,6 @@ from error import RepoExitError
 from git_command import git
 from git_config import IsImmutable
 from progress import Progress
-from project import Project
 from repo_logging import RepoLogger
 
 
@@ -29,7 +28,7 @@ logger = RepoLogger(__file__)
 
 
 class ExecuteOneResult(NamedTuple):
-    project: Project
+    project_idx: int
     error: Exception
 
 
@@ -52,7 +51,6 @@ revision specified in the manifest.
     def _Options(self, p):
         p.add_option(
             "--all",
-            dest="all",
             action="store_true",
             help="begin branch in all projects",
         )
@@ -80,18 +78,20 @@ revision specified in the manifest.
         if not git.check_ref_format("heads/%s" % nb):
             self.OptionParser.error("'%s' is not a valid name" % nb)
 
-    def _ExecuteOne(self, revision, nb, project):
+    @classmethod
+    def _ExecuteOne(cls, revision, nb, default_revisionExpr, project_idx):
         """Start one project."""
         # If the current revision is immutable, such as a SHA1, a tag or
         # a change, then we can't push back to it. Substitute with
         # dest_branch, if defined; or with manifest default revision instead.
         branch_merge = ""
         error = None
+        project = cls.get_parallel_context()["projects"][project_idx]
         if IsImmutable(project.revisionExpr):
             if project.dest_branch:
                 branch_merge = project.dest_branch
             else:
-                branch_merge = self.manifest.default.revisionExpr
+                branch_merge = default_revisionExpr
 
         try:
             project.StartBranch(
@@ -100,7 +100,7 @@ revision specified in the manifest.
         except Exception as e:
             logger.error("error: unable to checkout %s: %s", project.name, e)
             error = e
-        return ExecuteOneResult(project, error)
+        return ExecuteOneResult(project_idx, error)
 
     def Execute(self, opt, args):
         nb = args[0]
@@ -120,19 +120,28 @@ revision specified in the manifest.
         def _ProcessResults(_pool, pm, results):
             for result in results:
                 if result.error:
-                    err_projects.append(result.project)
+                    project = all_projects[result.project_idx]
+                    err_projects.append(project)
                     err.append(result.error)
                 pm.update(msg="")
 
-        self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = all_projects
-            functools.partial(self._ExecuteOne, opt.revision, nb),
+            self.ExecuteInParallel(
-            all_projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                functools.partial(
-            output=Progress(
+                    self._ExecuteOne,
-                f"Starting {nb}", len(all_projects), quiet=opt.quiet
+                    opt.revision,
-            ),
+                    nb,
-        )
+                    self.manifest.default.revisionExpr,
+                ),
+                range(len(all_projects)),
+                callback=_ProcessResults,
+                output=Progress(
+                    f"Starting {nb}", len(all_projects), quiet=opt.quiet
+                ),
+                chunksize=1,
+            )
 
         if err_projects:
             for p in err_projects:

subcmds/status.py

@@ -82,13 +82,13 @@ the following meanings:
         p.add_option(
             "-o",
             "--orphans",
-            dest="orphans",
             action="store_true",
             help="include objects in working directory outside of repo "
             "projects",
         )
 
-    def _StatusHelper(self, quiet, local, project):
+    @classmethod
+    def _StatusHelper(cls, quiet, local, project_idx):
         """Obtains the status for a specific project.
 
         Obtains the status for a project, redirecting the output to
@@ -99,12 +99,13 @@ the following meanings:
             local: a boolean, if True, the path is relative to the local
                 (sub)manifest.  If false, the path is relative to the outermost
                 manifest.
-            project: Project to get status of.
+            project_idx: Project index to get status of.
 
         Returns:
             The status of the project.
         """
         buf = io.StringIO()
+        project = cls.get_parallel_context()["projects"][project_idx]
         ret = project.PrintWorkTreeStatus(
             quiet=quiet, output_redir=buf, local=local
         )
@@ -143,15 +144,18 @@ the following meanings:
                     ret += 1
             return ret
 
-        counter = self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = all_projects
-            functools.partial(
+            counter = self.ExecuteInParallel(
-                self._StatusHelper, opt.quiet, opt.this_manifest_only
+                opt.jobs,
-            ),
+                functools.partial(
-            all_projects,
+                    self._StatusHelper, opt.quiet, opt.this_manifest_only
-            callback=_ProcessResults,
+                ),
-            ordered=True,
+                range(len(all_projects)),
-        )
+                callback=_ProcessResults,
+                ordered=True,
+                chunksize=1,
+            )
 
         if not opt.quiet and len(all_projects) == counter:
             print("nothing to commit (working directory clean)")

subcmds/upload.py

@@ -27,6 +27,7 @@ from error import SilentRepoExitError
 from error import UploadError
 from git_command import GitCommand
 from git_refs import R_HEADS
+import git_superproject
 from hooks import RepoHook
 from project import ReviewableBranch
 from repo_logging import RepoLogger
@@ -218,9 +219,14 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
     def _Options(self, p):
         p.add_option(
             "-t",
+            "--topic-branch",
             dest="auto_topic",
             action="store_true",
-            help="send local branch name to Gerrit Code Review",
+            help="set the topic to the local branch name",
+        )
+        p.add_option(
+            "--topic",
+            help="set topic for the change",
         )
         p.add_option(
             "--hashtag",
@@ -244,6 +250,12 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             default=[],
             help="add a label when uploading",
         )
+        p.add_option(
+            "--pd",
+            "--patchset-description",
+            dest="patchset_description",
+            help="description for patchset",
+        )
         p.add_option(
             "--re",
             "--reviewers",
@@ -256,7 +268,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             "--cc",
             type="string",
             action="append",
-            dest="cc",
             help="also send email to these email addresses",
         )
         p.add_option(
@@ -270,7 +281,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         p.add_option(
             "-c",
             "--current-branch",
-            dest="current_branch",
             action="store_true",
             help="upload current git branch",
         )
@@ -299,7 +309,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             "-p",
             "--private",
             action="store_true",
-            dest="private",
             default=False,
             help="upload as a private change (deprecated; use --wip)",
         )
@@ -307,7 +316,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             "-w",
             "--wip",
             action="store_true",
-            dest="wip",
             default=False,
             help="upload as a work-in-progress change",
         )
@@ -543,42 +551,14 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         people = copy.deepcopy(original_people)
         self._AppendAutoList(branch, people)
 
-        # Check if there are local changes that may have been forgotten.
-        changes = branch.project.UncommitedFiles()
-        if opt.ignore_untracked_files:
-            untracked = set(branch.project.UntrackedFiles())
-            changes = [x for x in changes if x not in untracked]
-
-        if changes:
-            key = "review.%s.autoupload" % branch.project.remote.review
-            answer = branch.project.config.GetBoolean(key)
-
-            # If they want to auto upload, let's not ask because it
-            # could be automated.
-            if answer is None:
-                print()
-                print(
-                    "Uncommitted changes in %s (did you forget to "
-                    "amend?):" % branch.project.name
-                )
-                print("\n".join(changes))
-                print("Continue uploading? (y/N) ", end="", flush=True)
-                if opt.yes:
-                    print("<--yes>")
-                    a = "yes"
-                else:
-                    a = sys.stdin.readline().strip().lower()
-                if a not in ("y", "yes", "t", "true", "on"):
-                    print("skipping upload", file=sys.stderr)
-                    branch.uploaded = False
-                    branch.error = "User aborted"
-                    return
-
         # Check if topic branches should be sent to the server during
         # upload.
-        if opt.auto_topic is not True:
+        if opt.topic is None:
-            key = "review.%s.uploadtopic" % branch.project.remote.review
+            if opt.auto_topic is not True:
-            opt.auto_topic = branch.project.config.GetBoolean(key)
+                key = "review.%s.uploadtopic" % branch.project.remote.review
+                opt.auto_topic = branch.project.config.GetBoolean(key)
+            if opt.auto_topic:
+                opt.topic = branch.name
 
         def _ExpandCommaList(value):
             """Split |value| up into comma delimited entries."""
@@ -620,19 +600,22 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             full_dest = destination
             if not full_dest.startswith(R_HEADS):
                 full_dest = R_HEADS + full_dest
+            full_revision = branch.project.revisionExpr
+            if not full_revision.startswith(R_HEADS):
+                full_revision = R_HEADS + full_revision
 
             # If the merge branch of the local branch is different from
             # the project's revision AND destination, this might not be
             # intentional.
             if (
                 merge_branch
-                and merge_branch != branch.project.revisionExpr
+                and merge_branch != full_revision
                 and merge_branch != full_dest
             ):
                 print(
                     f"For local branch {branch.name}: merge branch "
                     f"{merge_branch} does not match destination branch "
-                    f"{destination}"
+                    f"{destination} and revision {branch.project.revisionExpr}"
                 )
                 print("skipping upload.")
                 print(
@@ -642,10 +625,20 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
                 branch.uploaded = False
                 return
 
+        # If using superproject, add the root repo as a push option.
+        manifest = branch.project.manifest
+        push_options = list(opt.push_options)
+        if git_superproject.UseSuperproject(None, manifest):
+            sp = manifest.superproject
+            if sp:
+                r_id = sp.repo_id
+                if r_id:
+                    push_options.append(f"custom-keyed-value=rootRepo:{r_id}")
+
         branch.UploadForReview(
             people,
             dryrun=opt.dryrun,
-            auto_topic=opt.auto_topic,
+            topic=opt.topic,
             hashtags=hashtags,
             labels=labels,
             private=opt.private,
@@ -654,7 +647,8 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             ready=opt.ready,
             dest_branch=destination,
             validate_certs=opt.validate_certs,
-            push_options=opt.push_options,
+            push_options=push_options,
+            patchset_description=opt.patchset_description,
         )
 
         branch.uploaded = True
@@ -729,16 +723,17 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         merge_branch = p.stdout.strip()
         return merge_branch
 
-    @staticmethod
+    @classmethod
-    def _GatherOne(opt, project):
+    def _GatherOne(cls, opt, project_idx):
         """Figure out the upload status for |project|."""
+        project = cls.get_parallel_context()["projects"][project_idx]
         if opt.current_branch:
             cbr = project.CurrentBranch
             up_branch = project.GetUploadableBranch(cbr)
             avail = [up_branch] if up_branch else None
         else:
             avail = project.GetUploadableBranches(opt.branch)
-        return (project, avail)
+        return (project_idx, avail)
 
     def Execute(self, opt, args):
         projects = self.GetProjects(
@@ -748,7 +743,8 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         def _ProcessResults(_pool, _out, results):
             pending = []
             for result in results:
-                project, avail = result
+                project_idx, avail = result
+                project = projects[project_idx]
                 if avail is None:
                     logger.error(
                         'repo: error: %s: Unable to upload branch "%s". '
@@ -759,15 +755,17 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
                         project.manifest.branch,
                     )
                 elif avail:
-                    pending.append(result)
+                    pending.append((project, avail))
             return pending
 
-        pending = self.ExecuteInParallel(
+        with self.ParallelContext():
-            opt.jobs,
+            self.get_parallel_context()["projects"] = projects
-            functools.partial(self._GatherOne, opt),
+            pending = self.ExecuteInParallel(
-            projects,
+                opt.jobs,
-            callback=_ProcessResults,
+                functools.partial(self._GatherOne, opt),
-        )
+                range(len(projects)),
+                callback=_ProcessResults,
+            )
 
         if not pending:
             if opt.branch is None:
@@ -805,9 +803,10 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
                 project_list=pending_proj_names, worktree_list=pending_worktrees
             ):
                 if LocalSyncState(manifest).IsPartiallySynced():
-                    logger.error(
+                    logger.info(
-                        "Partially synced tree detected. Syncing all projects "
+                        "Tip: A partially synced tree was detected. "
-                        "may resolve issues you're seeing."
+                        "If this failure involves cross-project dependencies, "
+                        "a full `repo sync` might help."
                     )
                 ret = 1
         if ret:

subcmds/wipe.py

@@ -0,0 +1,184 @@
+# Copyright (C) 2025 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import sys
+from typing import List
+
+from command import Command
+from error import GitError
+from error import RepoExitError
+import platform_utils
+from project import DeleteWorktreeError
+
+
+class Error(RepoExitError):
+    """Exit error when wipe command fails."""
+
+
+class Wipe(Command):
+    """Delete projects from the worktree and .repo"""
+
+    COMMON = True
+    helpSummary = "Wipe projects from the worktree"
+    helpUsage = """
+%prog <project>...
+"""
+    helpDescription = """
+The '%prog' command removes the specified projects from the worktree
+(the checked out source code) and deletes the project's git data from `.repo`.
+
+This is a destructive operation and cannot be undone.
+
+Projects can be specified either by name, or by a relative or absolute path
+to the project's local directory.
+
+Examples:
+
+  # Wipe the project "platform/build" by name:
+  $ repo wipe platform/build
+
+  # Wipe the project at the path "build/make":
+  $ repo wipe build/make
+"""
+
+    def _Options(self, p):
+        # TODO(crbug.com/gerrit/393383056): Add --broken option to scan and
+        # wipe broken projects.
+        p.add_option(
+            "-f",
+            "--force",
+            action="store_true",
+            help="force wipe shared projects and uncommitted changes",
+        )
+        p.add_option(
+            "--force-uncommitted",
+            action="store_true",
+            help="force wipe even if there are uncommitted changes",
+        )
+        p.add_option(
+            "--force-shared",
+            action="store_true",
+            help="force wipe even if the project shares an object directory",
+        )
+
+    def ValidateOptions(self, opt, args: List[str]):
+        if not args:
+            self.Usage()
+
+    def Execute(self, opt, args: List[str]):
+        # Get all projects to handle shared object directories.
+        all_projects = self.GetProjects(None, all_manifests=True, groups="all")
+        projects_to_wipe = self.GetProjects(args, all_manifests=True)
+        relpaths_to_wipe = {p.relpath for p in projects_to_wipe}
+
+        # Build a map from objdir to the relpaths of projects that use it.
+        objdir_map = {}
+        for p in all_projects:
+            objdir_map.setdefault(p.objdir, set()).add(p.relpath)
+
+        uncommitted_projects = []
+        shared_objdirs = {}
+        objdirs_to_delete = set()
+
+        for project in projects_to_wipe:
+            if project == self.manifest.manifestProject:
+                raise Error(
+                    f"error: cannot wipe the manifest project: {project.name}"
+                )
+
+            try:
+                if project.HasChanges():
+                    uncommitted_projects.append(project.name)
+            except GitError:
+                uncommitted_projects.append(f"{project.name} (corrupted)")
+
+            users = objdir_map.get(project.objdir, {project.relpath})
+            is_shared = not users.issubset(relpaths_to_wipe)
+            if is_shared:
+                shared_objdirs.setdefault(project.objdir, set()).update(users)
+            else:
+                objdirs_to_delete.add(project.objdir)
+
+        block_uncommitted = uncommitted_projects and not (
+            opt.force or opt.force_uncommitted
+        )
+        block_shared = shared_objdirs and not (opt.force or opt.force_shared)
+
+        if block_uncommitted or block_shared:
+            error_messages = []
+            if block_uncommitted:
+                error_messages.append(
+                    "The following projects have uncommitted changes or are "
+                    "corrupted:\n"
+                    + "\n".join(f" - {p}" for p in sorted(uncommitted_projects))
+                )
+            if block_shared:
+                shared_dir_messages = []
+                for objdir, users in sorted(shared_objdirs.items()):
+                    other_users = users - relpaths_to_wipe
+                    projects_to_wipe_in_dir = users & relpaths_to_wipe
+                    message = f"""Object directory {objdir} is shared by:
+  Projects to be wiped: {', '.join(sorted(projects_to_wipe_in_dir))}
+  Projects not to be wiped: {', '.join(sorted(other_users))}"""
+                    shared_dir_messages.append(message)
+                error_messages.append(
+                    "The following projects have shared object directories:\n"
+                    + "\n".join(sorted(shared_dir_messages))
+                )
+
+            if block_uncommitted and block_shared:
+                error_messages.append(
+                    "Use --force to wipe anyway, or --force-uncommitted and "
+                    "--force-shared to specify."
+                )
+            elif block_uncommitted:
+                error_messages.append("Use --force-uncommitted to wipe anyway.")
+            else:
+                error_messages.append("Use --force-shared to wipe anyway.")
+
+            raise Error("\n\n".join(error_messages))
+
+        # If we are here, either there were no issues, or --force was used.
+        # Proceed with wiping.
+        successful_wipes = set()
+
+        for project in projects_to_wipe:
+            try:
+                # Force the delete here since we've already performed our
+                # own safety checks above.
+                project.DeleteWorktree(force=True, verbose=opt.verbose)
+                successful_wipes.add(project.relpath)
+            except DeleteWorktreeError as e:
+                print(
+                    f"error: failed to wipe {project.name}: {e}",
+                    file=sys.stderr,
+                )
+
+        # Clean up object directories only if all projects using them were
+        # successfully wiped.
+        for objdir in objdirs_to_delete:
+            users = objdir_map.get(objdir, set())
+            # Check if every project that uses this objdir has been
+            # successfully processed. If a project failed to be wiped, don't
+            # delete the object directory, or we'll corrupt the remaining
+            # project.
+            if users.issubset(successful_wipes):
+                if os.path.exists(objdir):
+                    if opt.verbose:
+                        print(
+                            f"Deleting objects directory: {objdir}",
+                            file=sys.stderr,
+                        )
+                    platform_utils.rmtree(objdir)

tests/README.md

@@ -0,0 +1,20 @@
+# Repo Tests
+
+There is a mixture of [pytest] & [Python unittest] in here.  We adopted [pytest]
+later on but didn't migrate existing tests (since they still work).  New tests
+should be written using [pytest] only.
+
+## File layout
+
+*   `test_xxx.py`: Unittests for the `xxx` module in the main repo codebase.
+    Modules that are in subdirs normalize the `/` into `_`.
+    For example, [test_error.py](./test_error.py) is for the
+    [error.py](../error.py) module, and
+    [test_subcmds_forall.py](./test_subcmds_forall.py) is for the
+    [subcmds/forall.py](../subcmds/forall.py) module.
+*   [conftest.py](./conftest.py): Custom pytest fixtures for sharing.
+*   [utils_for_test.py](./utils_for_test.py): Helpers for sharing in tests.
+
+
+[pytest]: https://pytest.org/
+[Python unittest]: https://docs.python.org/3/library/unittest.html#unittest.TestCase

tests/conftest.py

@@ -1,4 +1,4 @@
-# Copyright 2022 The Android Open Source Project
+# Copyright (C) 2022 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -72,3 +72,12 @@ def tmp_home_dir(monkeypatch, tmp_path_factory):
     the function scope.
     """
     return _set_home(monkeypatch, tmp_path_factory.mktemp("home"))
+
+
+@pytest.fixture(autouse=True)
+def setup_user_identity(monkeysession, scope="session"):
+    """Set env variables for author and committer name and email."""
+    monkeysession.setenv("GIT_AUTHOR_NAME", "Foo Bar")
+    monkeysession.setenv("GIT_COMMITTER_NAME", "Foo Bar")
+    monkeysession.setenv("GIT_AUTHOR_EMAIL", "foo@bar.baz")
+    monkeysession.setenv("GIT_COMMITTER_EMAIL", "foo@bar.baz")

tests/fixtures/gitc_config

@@ -1 +0,0 @@
-gitc_dir=/test/usr/local/google/gitc

tests/fixtures/test.gitconfig

@@ -11,3 +11,11 @@
 	intk = 10k
 	intm = 10m
 	intg = 10g
+
+[color "status"]
+	one = yellow
+	two = magenta cyan
+	three = black red ul
+	reset = reset
+	none
+	empty =

tests/test_color.py

@@ -0,0 +1,74 @@
+# Copyright (C) 2024 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Unittests for the color.py module."""
+
+import pytest
+import utils_for_test
+
+import color
+import git_config
+
+
+@pytest.fixture
+def coloring() -> color.Coloring:
+    """Create a Coloring object for testing."""
+    config_fixture = utils_for_test.FIXTURES_DIR / "test.gitconfig"
+    config = git_config.GitConfig(config_fixture)
+    color.SetDefaultColoring("true")
+    return color.Coloring(config, "status")
+
+
+def test_Color_Parse_all_params_none(coloring: color.Coloring) -> None:
+    """all params are None"""
+    val = coloring._parse(None, None, None, None)
+    assert val == ""
+
+
+def test_Color_Parse_first_parameter_none(coloring: color.Coloring) -> None:
+    """check fg & bg & attr"""
+    val = coloring._parse(None, "black", "red", "ul")
+    assert val == "\x1b[4;30;41m"
+
+
+def test_Color_Parse_one_entry(coloring: color.Coloring) -> None:
+    """check fg"""
+    val = coloring._parse("one", None, None, None)
+    assert val == "\033[33m"
+
+
+def test_Color_Parse_two_entry(coloring: color.Coloring) -> None:
+    """check fg & bg"""
+    val = coloring._parse("two", None, None, None)
+    assert val == "\033[35;46m"
+
+
+def test_Color_Parse_three_entry(coloring: color.Coloring) -> None:
+    """check fg & bg & attr"""
+    val = coloring._parse("three", None, None, None)
+    assert val == "\033[4;30;41m"
+
+
+def test_Color_Parse_reset_entry(coloring: color.Coloring) -> None:
+    """check reset entry"""
+    val = coloring._parse("reset", None, None, None)
+    assert val == "\033[m"
+
+
+def test_Color_Parse_empty_entry(coloring: color.Coloring) -> None:
+    """check empty entry"""
+    val = coloring._parse("none", "blue", "white", "dim")
+    assert val == "\033[2;34;47m"
+    val = coloring._parse("empty", "green", "white", "bold")
+    assert val == "\033[1;32;47m"

tests/test_editor.py

@@ -14,43 +14,32 @@
 
 """Unittests for the editor.py module."""
 
-import unittest
+import pytest
 
 from editor import Editor
 
 
-class EditorTestCase(unittest.TestCase):
+@pytest.fixture(autouse=True)
+def reset_editor() -> None:
     """Take care of resetting Editor state across tests."""
-
+    Editor._editor = None
-    def setUp(self):
+    yield
-        self.setEditor(None)
+    Editor._editor = None
-
-    def tearDown(self):
-        self.setEditor(None)
-
-    @staticmethod
-    def setEditor(editor):
-        Editor._editor = editor
 
 
-class GetEditor(EditorTestCase):
+def test_basic() -> None:
-    """Check GetEditor behavior."""
+    """Basic checking of _GetEditor."""
-
+    Editor._editor = ":"
-    def test_basic(self):
+    assert Editor._GetEditor() == ":"
-        """Basic checking of _GetEditor."""
-        self.setEditor(":")
-        self.assertEqual(":", Editor._GetEditor())
 
 
-class EditString(EditorTestCase):
+def test_no_editor() -> None:
-    """Check EditString behavior."""
+    """Check behavior when no editor is available."""
+    Editor._editor = ":"
+    assert Editor.EditString("foo") == "foo"
 
-    def test_no_editor(self):
-        """Check behavior when no editor is available."""
-        self.setEditor(":")
-        self.assertEqual("foo", Editor.EditString("foo"))
 
-    def test_cat_editor(self):
+def test_cat_editor() -> None:
-        """Check behavior when editor is `cat`."""
+    """Check behavior when editor is `cat`."""
-        self.setEditor("cat")
+    Editor._editor = "cat"
-        self.assertEqual("foo", Editor.EditString("foo"))
+    assert Editor.EditString("foo") == "foo"

tests/test_error.py

@@ -1,4 +1,4 @@
-# Copyright 2021 The Android Open Source Project
+# Copyright (C) 2021 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -16,7 +16,9 @@
 
 import inspect
 import pickle
-import unittest
+from typing import Iterator, Type
+
+import pytest
 
 import command
 import error
@@ -26,7 +28,7 @@ import project
 from subcmds import all_modules
 
 
-imports = all_modules + [
+_IMPORTS = all_modules + [
     error,
     project,
     git_command,
@@ -35,36 +37,35 @@ imports = all_modules + [
 ]
 
 
-class PickleTests(unittest.TestCase):
+def get_exceptions() -> Iterator[Type[Exception]]:
-    """Make sure all our custom exceptions can be pickled."""
+    """Return all our custom exceptions."""
+    for entry in _IMPORTS:
+        for name in dir(entry):
+            cls = getattr(entry, name)
+            if isinstance(cls, type) and issubclass(cls, Exception):
+                yield cls
 
-    def getExceptions(self):
-        """Return all our custom exceptions."""
-        for entry in imports:
-            for name in dir(entry):
-                cls = getattr(entry, name)
-                if isinstance(cls, type) and issubclass(cls, Exception):
-                    yield cls
 
-    def testExceptionLookup(self):
+def test_exception_lookup() -> None:
-        """Make sure our introspection logic works."""
+    """Make sure our introspection logic works."""
-        classes = list(self.getExceptions())
+    classes = list(get_exceptions())
-        self.assertIn(error.HookError, classes)
+    assert error.HookError in classes
-        # Don't assert the exact number to avoid being a change-detector test.
+    # Don't assert the exact number to avoid being a change-detector test.
-        self.assertGreater(len(classes), 10)
+    assert len(classes) > 10
 
-    def testPickle(self):
+
-        """Try to pickle all the exceptions."""
+@pytest.mark.parametrize("cls", get_exceptions())
-        for cls in self.getExceptions():
+def test_pickle(cls: Type[Exception]) -> None:
-            args = inspect.getfullargspec(cls.__init__).args[1:]
+    """Try to pickle all the exceptions."""
-            obj = cls(*args)
+    args = inspect.getfullargspec(cls.__init__).args[1:]
-            p = pickle.dumps(obj)
+    obj = cls(*args)
-            try:
+    p = pickle.dumps(obj)
-                newobj = pickle.loads(p)
+    try:
-            except Exception as e:  # pylint: disable=broad-except
+        newobj = pickle.loads(p)
-                self.fail(
+    except Exception as e:
-                    "Class %s is unable to be pickled: %s\n"
+        pytest.fail(
-                    "Incomplete super().__init__(...) call?" % (cls, e)
+            f"Class {cls} is unable to be pickled: {e}\n"
-                )
+            "Incomplete super().__init__(...) call?"
-            self.assertIsInstance(newobj, cls)
+        )
-            self.assertEqual(str(obj), str(newobj))
+    assert isinstance(newobj, cls)
+    assert str(obj) == str(newobj)

tests/test_git_command.py

@@ -1,4 +1,4 @@
-# Copyright 2019 The Android Open Source Project
+# Copyright (C) 2019 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -21,6 +21,8 @@ import subprocess
 import unittest
 from unittest import mock
 
+import pytest
+
 import git_command
 import wrapper
 
@@ -263,6 +265,7 @@ class UserAgentUnitTest(unittest.TestCase):
         m = re.match(r"^[^ ]+$", os_name)
         self.assertIsNotNone(m)
 
+    @pytest.mark.skip_cq("TODO(b/266734831): Find out why this fails in CQ")
     def test_smoke_repo(self):
         """Make sure repo UA returns something useful."""
         ua = git_command.user_agent.repo
@@ -271,6 +274,7 @@ class UserAgentUnitTest(unittest.TestCase):
         m = re.match(r"^git-repo/[^ ]+ ([^ ]+) git/[^ ]+ Python/[0-9.]+", ua)
         self.assertIsNotNone(m)
 
+    @pytest.mark.skip_cq("TODO(b/266734831): Find out why this fails in CQ")
     def test_smoke_git(self):
         """Make sure git UA returns something useful."""
         ua = git_command.user_agent.git

tests/test_git_config.py

@@ -14,177 +14,215 @@
 
 """Unittests for the git_config.py module."""
 
-import os
+from pathlib import Path
-import tempfile
+from typing import Any
-import unittest
+
+import pytest
+import utils_for_test
 
 import git_config
 
 
-def fixture(*paths):
+@pytest.fixture
-    """Return a path relative to test/fixtures."""
+def readonly_config() -> git_config.GitConfig:
-    return os.path.join(os.path.dirname(__file__), "fixtures", *paths)
+    """Create a GitConfig object using the test.gitconfig fixture."""
+    config_fixture = utils_for_test.FIXTURES_DIR / "test.gitconfig"
+    return git_config.GitConfig(config_fixture)
 
 
-class GitConfigReadOnlyTests(unittest.TestCase):
+def test_get_string_with_empty_config_values(
-    """Read-only tests of the GitConfig class."""
+    readonly_config: git_config.GitConfig,
+) -> None:
+    """Test config entries with no value.
 
-    def setUp(self):
+    [section]
-        """Create a GitConfig object using the test.gitconfig fixture."""
+        empty
-        config_fixture = fixture("test.gitconfig")
-        self.config = git_config.GitConfig(config_fixture)
 
-    def test_GetString_with_empty_config_values(self):
+    """
-        """
+    val = readonly_config.GetString("section.empty")
-        Test config entries with no value.
+    assert val is None
-
-        [section]
-            empty
-
-        """
-        val = self.config.GetString("section.empty")
-        self.assertEqual(val, None)
-
-    def test_GetString_with_true_value(self):
-        """
-        Test config entries with a string value.
-
-        [section]
-            nonempty = true
-
-        """
-        val = self.config.GetString("section.nonempty")
-        self.assertEqual(val, "true")
-
-    def test_GetString_from_missing_file(self):
-        """
-        Test missing config file
-        """
-        config_fixture = fixture("not.present.gitconfig")
-        config = git_config.GitConfig(config_fixture)
-        val = config.GetString("empty")
-        self.assertEqual(val, None)
-
-    def test_GetBoolean_undefined(self):
-        """Test GetBoolean on key that doesn't exist."""
-        self.assertIsNone(self.config.GetBoolean("section.missing"))
-
-    def test_GetBoolean_invalid(self):
-        """Test GetBoolean on invalid boolean value."""
-        self.assertIsNone(self.config.GetBoolean("section.boolinvalid"))
-
-    def test_GetBoolean_true(self):
-        """Test GetBoolean on valid true boolean."""
-        self.assertTrue(self.config.GetBoolean("section.booltrue"))
-
-    def test_GetBoolean_false(self):
-        """Test GetBoolean on valid false boolean."""
-        self.assertFalse(self.config.GetBoolean("section.boolfalse"))
-
-    def test_GetInt_undefined(self):
-        """Test GetInt on key that doesn't exist."""
-        self.assertIsNone(self.config.GetInt("section.missing"))
-
-    def test_GetInt_invalid(self):
-        """Test GetInt on invalid integer value."""
-        self.assertIsNone(self.config.GetBoolean("section.intinvalid"))
-
-    def test_GetInt_valid(self):
-        """Test GetInt on valid integers."""
-        TESTS = (
-            ("inthex", 16),
-            ("inthexk", 16384),
-            ("int", 10),
-            ("intk", 10240),
-            ("intm", 10485760),
-            ("intg", 10737418240),
-        )
-        for key, value in TESTS:
-            self.assertEqual(value, self.config.GetInt(f"section.{key}"))
 
 
-class GitConfigReadWriteTests(unittest.TestCase):
+def test_get_string_with_true_value(
-    """Read/write tests of the GitConfig class."""
+    readonly_config: git_config.GitConfig,
+) -> None:
+    """Test config entries with a string value.
 
-    def setUp(self):
+    [section]
-        self.tmpfile = tempfile.NamedTemporaryFile()
+        nonempty = true
-        self.config = self.get_config()
 
-    def get_config(self):
+    """
-        """Get a new GitConfig instance."""
+    val = readonly_config.GetString("section.nonempty")
-        return git_config.GitConfig(self.tmpfile.name)
+    assert val == "true"
 
-    def test_SetString(self):
-        """Test SetString behavior."""
-        # Set a value.
-        self.assertIsNone(self.config.GetString("foo.bar"))
-        self.config.SetString("foo.bar", "val")
-        self.assertEqual("val", self.config.GetString("foo.bar"))
 
-        # Make sure the value was actually written out.
+def test_get_string_from_missing_file() -> None:
-        config = self.get_config()
+    """Test missing config file."""
-        self.assertEqual("val", config.GetString("foo.bar"))
+    config_fixture = utils_for_test.FIXTURES_DIR / "not.present.gitconfig"
+    config = git_config.GitConfig(config_fixture)
+    val = config.GetString("empty")
+    assert val is None
 
-        # Update the value.
-        self.config.SetString("foo.bar", "valll")
-        self.assertEqual("valll", self.config.GetString("foo.bar"))
-        config = self.get_config()
-        self.assertEqual("valll", config.GetString("foo.bar"))
 
-        # Delete the value.
+def test_get_boolean_undefined(readonly_config: git_config.GitConfig) -> None:
-        self.config.SetString("foo.bar", None)
+    """Test GetBoolean on key that doesn't exist."""
-        self.assertIsNone(self.config.GetString("foo.bar"))
+    assert readonly_config.GetBoolean("section.missing") is None
-        config = self.get_config()
-        self.assertIsNone(config.GetString("foo.bar"))
 
-    def test_SetBoolean(self):
-        """Test SetBoolean behavior."""
-        # Set a true value.
-        self.assertIsNone(self.config.GetBoolean("foo.bar"))
-        for val in (True, 1):
-            self.config.SetBoolean("foo.bar", val)
-            self.assertTrue(self.config.GetBoolean("foo.bar"))
 
-        # Make sure the value was actually written out.
+def test_get_boolean_invalid(readonly_config: git_config.GitConfig) -> None:
-        config = self.get_config()
+    """Test GetBoolean on invalid boolean value."""
-        self.assertTrue(config.GetBoolean("foo.bar"))
+    assert readonly_config.GetBoolean("section.boolinvalid") is None
-        self.assertEqual("true", config.GetString("foo.bar"))
 
-        # Set a false value.
-        for val in (False, 0):
-            self.config.SetBoolean("foo.bar", val)
-            self.assertFalse(self.config.GetBoolean("foo.bar"))
 
-        # Make sure the value was actually written out.
+def test_get_boolean_true(readonly_config: git_config.GitConfig) -> None:
-        config = self.get_config()
+    """Test GetBoolean on valid true boolean."""
-        self.assertFalse(config.GetBoolean("foo.bar"))
+    assert readonly_config.GetBoolean("section.booltrue") is True
-        self.assertEqual("false", config.GetString("foo.bar"))
 
-        # Delete the value.
-        self.config.SetBoolean("foo.bar", None)
-        self.assertIsNone(self.config.GetBoolean("foo.bar"))
-        config = self.get_config()
-        self.assertIsNone(config.GetBoolean("foo.bar"))
 
-    def test_GetSyncAnalysisStateData(self):
+def test_get_boolean_false(readonly_config: git_config.GitConfig) -> None:
-        """Test config entries with a sync state analysis data."""
+    """Test GetBoolean on valid false boolean."""
-        superproject_logging_data = {}
+    assert readonly_config.GetBoolean("section.boolfalse") is False
-        superproject_logging_data["test"] = False
+
-        options = type("options", (object,), {})()
+
-        options.verbose = "true"
+def test_get_int_undefined(readonly_config: git_config.GitConfig) -> None:
-        options.mp_update = "false"
+    """Test GetInt on key that doesn't exist."""
-        TESTS = (
+    assert readonly_config.GetInt("section.missing") is None
-            ("superproject.test", "false"),
+
-            ("options.verbose", "true"),
+
-            ("options.mpupdate", "false"),
+def test_get_int_invalid(readonly_config: git_config.GitConfig) -> None:
-            ("main.version", "1"),
+    """Test GetInt on invalid integer value."""
-        )
+    assert readonly_config.GetInt("section.intinvalid") is None
-        self.config.UpdateSyncAnalysisState(options, superproject_logging_data)
+
-        sync_data = self.config.GetSyncAnalysisStateData()
+
-        for key, value in TESTS:
+@pytest.mark.parametrize(
-            self.assertEqual(
+    "key, expected",
-                sync_data[f"{git_config.SYNC_STATE_PREFIX}{key}"], value
+    (
-            )
+        ("inthex", 16),
-        self.assertTrue(
+        ("inthexk", 16384),
-            sync_data[f"{git_config.SYNC_STATE_PREFIX}main.synctime"]
+        ("int", 10),
-        )
+        ("intk", 10240),
+        ("intm", 10485760),
+        ("intg", 10737418240),
+    ),
+)
+def test_get_int_valid(
+    readonly_config: git_config.GitConfig, key: str, expected: int
+) -> None:
+    """Test GetInt on valid integers."""
+    assert readonly_config.GetInt(f"section.{key}") == expected
+
+
+@pytest.fixture
+def rw_config_file(tmp_path: Path) -> Path:
+    """Return a path to a temporary config file."""
+    return tmp_path / "config"
+
+
+def test_set_string(rw_config_file: Path) -> None:
+    """Test SetString behavior."""
+    config = git_config.GitConfig(str(rw_config_file))
+
+    # Set a value.
+    assert config.GetString("foo.bar") is None
+    config.SetString("foo.bar", "val")
+    assert config.GetString("foo.bar") == "val"
+
+    # Make sure the value was actually written out.
+    config2 = git_config.GitConfig(str(rw_config_file))
+    assert config2.GetString("foo.bar") == "val"
+
+    # Update the value.
+    config.SetString("foo.bar", "valll")
+    assert config.GetString("foo.bar") == "valll"
+    config3 = git_config.GitConfig(str(rw_config_file))
+    assert config3.GetString("foo.bar") == "valll"
+
+    # Delete the value.
+    config.SetString("foo.bar", None)
+    assert config.GetString("foo.bar") is None
+    config4 = git_config.GitConfig(str(rw_config_file))
+    assert config4.GetString("foo.bar") is None
+
+
+def test_set_boolean(rw_config_file: Path) -> None:
+    """Test SetBoolean behavior."""
+    config = git_config.GitConfig(str(rw_config_file))
+
+    # Set a true value.
+    assert config.GetBoolean("foo.bar") is None
+    for val in (True, 1):
+        config.SetBoolean("foo.bar", val)
+        assert config.GetBoolean("foo.bar") is True
+
+    # Make sure the value was actually written out.
+    config2 = git_config.GitConfig(str(rw_config_file))
+    assert config2.GetBoolean("foo.bar") is True
+    assert config2.GetString("foo.bar") == "true"
+
+    # Set a false value.
+    for val in (False, 0):
+        config.SetBoolean("foo.bar", val)
+        assert config.GetBoolean("foo.bar") is False
+
+    # Make sure the value was actually written out.
+    config3 = git_config.GitConfig(str(rw_config_file))
+    assert config3.GetBoolean("foo.bar") is False
+    assert config3.GetString("foo.bar") == "false"
+
+    # Delete the value.
+    config.SetBoolean("foo.bar", None)
+    assert config.GetBoolean("foo.bar") is None
+    config4 = git_config.GitConfig(str(rw_config_file))
+    assert config4.GetBoolean("foo.bar") is None
+
+
+def test_set_int(rw_config_file: Path) -> None:
+    """Test SetInt behavior."""
+    config = git_config.GitConfig(str(rw_config_file))
+
+    # Set a value.
+    assert config.GetInt("foo.bar") is None
+    config.SetInt("foo.bar", 10)
+    assert config.GetInt("foo.bar") == 10
+
+    # Make sure the value was actually written out.
+    config2 = git_config.GitConfig(str(rw_config_file))
+    assert config2.GetInt("foo.bar") == 10
+    assert config2.GetString("foo.bar") == "10"
+
+    # Update the value.
+    config.SetInt("foo.bar", 20)
+    assert config.GetInt("foo.bar") == 20
+    config3 = git_config.GitConfig(str(rw_config_file))
+    assert config3.GetInt("foo.bar") == 20
+
+    # Delete the value.
+    config.SetInt("foo.bar", None)
+    assert config.GetInt("foo.bar") is None
+    config4 = git_config.GitConfig(str(rw_config_file))
+    assert config4.GetInt("foo.bar") is None
+
+
+def test_get_sync_analysis_state_data(rw_config_file: Path) -> None:
+    """Test config entries with a sync state analysis data."""
+    config = git_config.GitConfig(str(rw_config_file))
+    superproject_logging_data: dict[str, Any] = {"test": False}
+
+    class Options:
+        """Container for testing."""
+
+    options = Options()
+    options.verbose = "true"
+    options.mp_update = "false"
+
+    TESTS = (
+        ("superproject.test", "false"),
+        ("options.verbose", "true"),
+        ("options.mpupdate", "false"),
+        ("main.version", "1"),
+    )
+    config.UpdateSyncAnalysisState(options, superproject_logging_data)
+    sync_data = config.GetSyncAnalysisStateData()
+    for key, value in TESTS:
+        assert sync_data[f"{git_config.SYNC_STATE_PREFIX}{key}"] == value
+    assert sync_data[f"{git_config.SYNC_STATE_PREFIX}main.synctime"]

tests/test_git_refs.py

@@ -0,0 +1,99 @@
+# Copyright (C) 2026 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Unittests for the git_refs.py module."""
+
+import os
+from pathlib import Path
+import subprocess
+
+import pytest
+import utils_for_test
+
+import git_refs
+
+
+def _run(repo, *args):
+    return subprocess.run(
+        ["git", "-C", repo, *args],
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        encoding="utf-8",
+        check=True,
+    ).stdout.strip()
+
+
+def _init_repo(tmp_path, reftable=False):
+    repo = os.path.join(tmp_path, "repo")
+    ref_format = "reftable" if reftable else "files"
+    utils_for_test.init_git_tree(repo, ref_format=ref_format)
+
+    Path(os.path.join(repo, "a")).write_text("1")
+    _run(repo, "add", "a")
+    _run(repo, "commit", "-q", "-m", "init")
+    return repo
+
+
+@pytest.mark.parametrize("reftable", [False, True])
+def test_reads_refs(tmp_path, reftable):
+    if reftable and not utils_for_test.supports_reftable():
+        pytest.skip("reftable not supported")
+
+    repo = _init_repo(tmp_path, reftable=reftable)
+    gitdir = os.path.join(repo, ".git")
+    refs = git_refs.GitRefs(gitdir)
+
+    branch = _run(repo, "symbolic-ref", "--short", "HEAD")
+    head = _run(repo, "rev-parse", "HEAD")
+    assert refs.symref("HEAD") == f"refs/heads/{branch}"
+    assert refs.get("HEAD") == head
+    assert refs.get(f"refs/heads/{branch}") == head
+
+
+@pytest.mark.parametrize("reftable", [False, True])
+def test_updates_when_refs_change(tmp_path, reftable):
+    if reftable and not utils_for_test.supports_reftable():
+        pytest.skip("reftable not supported")
+
+    repo = _init_repo(tmp_path, reftable=reftable)
+    gitdir = os.path.join(repo, ".git")
+    refs = git_refs.GitRefs(gitdir)
+
+    head = _run(repo, "rev-parse", "HEAD")
+    assert refs.get("refs/heads/topic") == ""
+    _run(repo, "branch", "topic")
+    assert refs.get("refs/heads/topic") == head
+    _run(repo, "branch", "-D", "topic")
+    assert refs.get("refs/heads/topic") == ""
+
+
+@pytest.mark.skipif(
+    not utils_for_test.supports_refs_migrate(),
+    reason="git refs migrate reftable support is required for this test",
+)
+def test_updates_when_storage_backend_toggles(tmp_path):
+    repo = _init_repo(tmp_path, reftable=False)
+    gitdir = os.path.join(repo, ".git")
+    refs = git_refs.GitRefs(gitdir)
+
+    head = _run(repo, "rev-parse", "HEAD")
+    assert refs.get("refs/heads/reftable-branch") == ""
+    _run(repo, "refs", "migrate", "--ref-format=reftable")
+    _run(repo, "branch", "reftable-branch")
+    assert refs.get("refs/heads/reftable-branch") == head
+
+    assert refs.get("refs/heads/files-branch") == ""
+    _run(repo, "refs", "migrate", "--ref-format=files")
+    _run(repo, "branch", "files-branch")
+    assert refs.get("refs/heads/files-branch") == head

tests/test_git_superproject.py

@@ -21,6 +21,7 @@ import tempfile
 import unittest
 from unittest import mock
 
+import pytest
 from test_manifest_xml import sort_attributes
 
 import git_superproject
@@ -145,6 +146,7 @@ class SuperprojectTestCase(unittest.TestCase):
         )
         self.assertIsNone(manifest.superproject)
 
+    @pytest.mark.skip_cq("TODO(b/266734831): Find out why this takes 8m+ in CQ")
     def test_superproject_get_superproject_invalid_url(self):
         """Test with an invalid url."""
         manifest = self.getXmlManifest(
@@ -168,6 +170,7 @@ class SuperprojectTestCase(unittest.TestCase):
         self.assertFalse(sync_result.success)
         self.assertTrue(sync_result.fatal)
 
+    @pytest.mark.skip_cq("TODO(b/266734831): Find out why this takes 8m+ in CQ")
     def test_superproject_get_superproject_invalid_branch(self):
         """Test with an invalid branch."""
         manifest = self.getXmlManifest(
@@ -458,6 +461,62 @@ class SuperprojectTestCase(unittest.TestCase):
                         "</manifest>",
                     )
 
+    def test_Init_success(self):
+        """Test _Init succeeds and creates the work git dir."""
+        self.assertFalse(os.path.exists(self._superproject._work_git))
+        with mock.patch(
+            "git_superproject.GitCommand", autospec=True
+        ) as mock_git_command:
+            instance = mock_git_command.return_value
+            instance.Wait.return_value = 0
+
+            self.assertTrue(self._superproject._Init())
+
+            mock_git_command.assert_called_once()
+            args, kwargs = mock_git_command.call_args
+            self.assertEqual(args[1][:2], ["init", "--bare"])
+
+            tmp_git_name = args[1][2]
+            self.assertTrue(
+                tmp_git_name.startswith(".tmp-superproject-initgitdir-")
+            )
+            self.assertTrue(os.path.exists(self._superproject._work_git))
+
+            tmp_git_path = os.path.join(
+                self._superproject._superproject_path, tmp_git_name
+            )
+            self.assertFalse(os.path.exists(tmp_git_path))
+
+    def test_Init_already_exists(self):
+        """Test _Init returns early if the work git dir already exists."""
+        os.mkdir(self._superproject._superproject_path)
+        os.mkdir(self._superproject._work_git)
+        with mock.patch(
+            "git_superproject.GitCommand", autospec=True
+        ) as mock_git_command:
+            self.assertTrue(self._superproject._Init())
+            mock_git_command.assert_not_called()
+
+    def test_Init_failure_cleans_up(self):
+        """Test _Init cleans up the temporary directory if 'git init' fails."""
+        with mock.patch(
+            "git_superproject.GitCommand", autospec=True
+        ) as mock_git_command:
+            instance = mock_git_command.return_value
+            instance.Wait.return_value = 1
+            instance.stderr = "mock git init failure"
+
+            self.assertFalse(self._superproject._Init())
+            mock_git_command.assert_called_once()
+            args, kwargs = mock_git_command.call_args
+            tmp_git_name = args[1][2]
+
+            tmp_git_path = os.path.join(
+                self._superproject._superproject_path, tmp_git_name
+            )
+            self.assertFalse(os.path.exists(tmp_git_path))
+            self.assertFalse(os.path.exists(self._superproject._work_git))
+
     def test_Fetch(self):
         manifest = self.getXmlManifest(
             """

tests/test_git_trace2_event_log.py

@@ -14,19 +14,28 @@
 
 """Unittests for the git_trace2_event_log.py module."""
 
+import contextlib
+import io
 import json
 import os
+import re
 import socket
 import tempfile
 import threading
-import unittest
+from typing import Any, Dict, List, Optional
 from unittest import mock
 
+import pytest
+
 import git_trace2_event_log
 import platform_utils
 
 
-def serverLoggingThread(socket_path, server_ready, received_traces):
+def server_logging_thread(
+    socket_path: str,
+    server_ready: threading.Condition,
+    received_traces: List[str],
+) -> None:
     """Helper function to receive logs over a Unix domain socket.
 
     Appends received messages on the provided socket and appends to
@@ -55,356 +64,425 @@ def serverLoggingThread(socket_path, server_ready, received_traces):
     received_traces.extend(data.decode("utf-8").splitlines())
 
 
-class EventLogTestCase(unittest.TestCase):
+PARENT_SID_KEY = "GIT_TRACE2_PARENT_SID"
-    """TestCase for the EventLog module."""
+PARENT_SID_VALUE = "parent_sid"
+SELF_SID_REGEX = r"repo-\d+T\d+Z-.*"
+FULL_SID_REGEX = rf"^{PARENT_SID_VALUE}/{SELF_SID_REGEX}"
 
-    PARENT_SID_KEY = "GIT_TRACE2_PARENT_SID"
-    PARENT_SID_VALUE = "parent_sid"
-    SELF_SID_REGEX = r"repo-\d+T\d+Z-.*"
-    FULL_SID_REGEX = rf"^{PARENT_SID_VALUE}/{SELF_SID_REGEX}"
 
-    def setUp(self):
+@pytest.fixture
-        """Load the event_log module every time."""
+def event_log() -> git_trace2_event_log.EventLog:
-        self._event_log_module = None
+    """Fixture for the EventLog module."""
-        # By default we initialize with the expected case where
+    # By default we initialize with the expected case where
-        # repo launches us (so GIT_TRACE2_PARENT_SID is set).
+    # repo launches us (so GIT_TRACE2_PARENT_SID is set).
-        env = {
+    env = {PARENT_SID_KEY: PARENT_SID_VALUE}
-            self.PARENT_SID_KEY: self.PARENT_SID_VALUE,
+    return git_trace2_event_log.EventLog(env=env)
-        }
-        self._event_log_module = git_trace2_event_log.EventLog(env=env)
-        self._log_data = None
 
-    def verifyCommonKeys(
+
-        self, log_entry, expected_event_name=None, full_sid=True
+def verify_common_keys(
+    log_entry: Dict[str, Any],
+    expected_event_name: Optional[str] = None,
+    full_sid: bool = True,
+) -> None:
+    """Helper function to verify common event log keys."""
+    assert "event" in log_entry
+    assert "sid" in log_entry
+    assert "thread" in log_entry
+    assert "time" in log_entry
+
+    # Do basic data format validation.
+    if expected_event_name:
+        assert expected_event_name == log_entry["event"]
+    if full_sid:
+        assert re.match(FULL_SID_REGEX, log_entry["sid"])
+    else:
+        assert re.match(SELF_SID_REGEX, log_entry["sid"])
+    assert re.match(r"^\d+-\d+-\d+T\d+:\d+:\d+\.\d+\+00:00$", log_entry["time"])
+
+
+def read_log(log_path: str) -> List[Dict[str, Any]]:
+    """Helper function to read log data into a list."""
+    log_data = []
+    with open(log_path, mode="rb") as f:
+        for line in f:
+            log_data.append(json.loads(line))
+    return log_data
+
+
+def remove_prefix(s: str, prefix: str) -> str:
+    """Return a copy string after removing |prefix| from |s|, if present or
+    the original string."""
+    if s.startswith(prefix):
+        return s[len(prefix) :]
+    else:
+        return s
+
+
+def test_initial_state_with_parent_sid(
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test initial state when 'GIT_TRACE2_PARENT_SID' is set by parent."""
+    assert re.match(FULL_SID_REGEX, event_log.full_sid)
+
+
+def test_initial_state_no_parent_sid() -> None:
+    """Test initial state when 'GIT_TRACE2_PARENT_SID' is not set."""
+    # Setup an empty environment dict (no parent sid).
+    event_log = git_trace2_event_log.EventLog(env={})
+    assert re.match(SELF_SID_REGEX, event_log.full_sid)
+
+
+def test_version_event(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test 'version' event data is valid.
+
+    Verify that the 'version' event is written even when no other
+    events are added.
+
+    Expected event log:
+    <version event>
+    """
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    # A log with no added events should only have the version entry.
+    assert len(log_data) == 1
+    version_event = log_data[0]
+    verify_common_keys(version_event, expected_event_name="version")
+    # Check for 'version' event specific fields.
+    assert "evt" in version_event
+    assert "exe" in version_event
+    # Verify "evt" version field is a string.
+    assert isinstance(version_event["evt"], str)
+
+
+def test_start_event(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test and validate 'start' event data is valid.
+
+    Expected event log:
+    <version event>
+    <start event>
+    """
+    event_log.StartEvent([])
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 2
+    start_event = log_data[1]
+    verify_common_keys(log_data[0], expected_event_name="version")
+    verify_common_keys(start_event, expected_event_name="start")
+    # Check for 'start' event specific fields.
+    assert "argv" in start_event
+    assert isinstance(start_event["argv"], list)
+
+
+def test_exit_event_result_none(
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test 'exit' event data is valid when result is None.
+
+    We expect None result to be converted to 0 in the exit event data.
+
+    Expected event log:
+    <version event>
+    <exit event>
+    """
+    event_log.ExitEvent(None)
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 2
+    exit_event = log_data[1]
+    verify_common_keys(log_data[0], expected_event_name="version")
+    verify_common_keys(exit_event, expected_event_name="exit")
+    # Check for 'exit' event specific fields.
+    assert "code" in exit_event
+    # 'None' result should convert to 0 (successful) return code.
+    assert exit_event["code"] == 0
+
+
+def test_exit_event_result_integer(
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test 'exit' event data is valid when result is an integer.
+
+    Expected event log:
+    <version event>
+    <exit event>
+    """
+    event_log.ExitEvent(2)
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 2
+    exit_event = log_data[1]
+    verify_common_keys(log_data[0], expected_event_name="version")
+    verify_common_keys(exit_event, expected_event_name="exit")
+    # Check for 'exit' event specific fields.
+    assert "code" in exit_event
+    assert exit_event["code"] == 2
+
+
+def test_command_event(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test and validate 'command' event data is valid.
+
+    Expected event log:
+    <version event>
+    <command event>
+    """
+    event_log.CommandEvent(name="repo", subcommands=["init", "this"])
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 2
+    command_event = log_data[1]
+    verify_common_keys(log_data[0], expected_event_name="version")
+    verify_common_keys(command_event, expected_event_name="cmd_name")
+    # Check for 'command' event specific fields.
+    assert "name" in command_event
+    assert command_event["name"] == "repo-init-this"
+
+
+def test_def_params_event_repo_config(
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test 'def_params' event data outputs only repo config keys.
+
+    Expected event log:
+    <version event>
+    <def_param event>
+    <def_param event>
+    """
+    config = {
+        "git.foo": "bar",
+        "repo.partialclone": "true",
+        "repo.partialclonefilter": "blob:none",
+    }
+    event_log.DefParamRepoEvents(config)
+
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 3
+    def_param_events = log_data[1:]
+    verify_common_keys(log_data[0], expected_event_name="version")
+
+    for event in def_param_events:
+        verify_common_keys(event, expected_event_name="def_param")
+        # Check for 'def_param' event specific fields.
+        assert "param" in event
+        assert "value" in event
+        assert event["param"].startswith("repo.")
+
+
+def test_def_params_event_no_repo_config(
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test 'def_params' event data won't output non-repo config keys.
+
+    Expected event log:
+    <version event>
+    """
+    config = {
+        "git.foo": "bar",
+        "git.core.foo2": "baz",
+    }
+    event_log.DefParamRepoEvents(config)
+
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 1
+    verify_common_keys(log_data[0], expected_event_name="version")
+
+
+def test_data_event_config(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test 'data' event data outputs all config keys.
+
+    Expected event log:
+    <version event>
+    <data event>
+    <data event>
+    """
+    config = {
+        "git.foo": "bar",
+        "repo.partialclone": "false",
+        "repo.syncstate.superproject.hassuperprojecttag": "true",
+        "repo.syncstate.superproject.sys.argv": ["--", "sync", "protobuf"],
+    }
+    prefix_value = "prefix"
+    event_log.LogDataConfigEvents(config, prefix_value)
+
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 5
+    data_events = log_data[1:]
+    verify_common_keys(log_data[0], expected_event_name="version")
+
+    for event in data_events:
+        verify_common_keys(event)
+        # Check for 'data' event specific fields.
+        assert "key" in event
+        assert "value" in event
+        key = event["key"]
+        key = remove_prefix(key, f"{prefix_value}/")
+        value = event["value"]
+        assert event_log.GetDataEventName(value) == event["event"]
+        assert key in config
+        assert value == config[key]
+
+
+def test_error_event(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test and validate 'error' event data is valid.
+
+    Expected event log:
+    <version event>
+    <error event>
+    """
+    msg = "invalid option: --cahced"
+    fmt = "invalid option: %s"
+    event_log.ErrorEvent(msg, fmt)
+    with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        log_path = event_log.Write(path=tempdir)
+        log_data = read_log(log_path)
+
+    assert len(log_data) == 2
+    error_event = log_data[1]
+    verify_common_keys(log_data[0], expected_event_name="version")
+    verify_common_keys(error_event, expected_event_name="error")
+    # Check for 'error' event specific fields.
+    assert "msg" in error_event
+    assert "fmt" in error_event
+    assert error_event["msg"] == f"RepoErrorEvent:{msg}"
+    assert error_event["fmt"] == f"RepoErrorEvent:{fmt}"
+
+
+def test_write_with_filename(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test Write() with a path to a file exits with None."""
+    assert event_log.Write(path="path/to/file") is None
+
+
+def test_write_with_git_config(
+    tmp_path,
+    event_log: git_trace2_event_log.EventLog,
+) -> None:
+    """Test Write() uses the git config path when 'git config' call succeeds."""
+    with mock.patch.object(
+        event_log,
+        "_GetEventTargetPath",
+        return_value=str(tmp_path),
     ):
-        """Helper function to verify common event log keys."""
+        assert os.path.dirname(event_log.Write()) == str(tmp_path)
-        self.assertIn("event", log_entry)
-        self.assertIn("sid", log_entry)
-        self.assertIn("thread", log_entry)
-        self.assertIn("time", log_entry)
 
-        # Do basic data format validation.
+
-        if expected_event_name:
+def test_write_no_git_config(event_log: git_trace2_event_log.EventLog) -> None:
-            self.assertEqual(expected_event_name, log_entry["event"])
+    """Test Write() with no git config variable present exits with None."""
-        if full_sid:
+    with mock.patch.object(event_log, "_GetEventTargetPath", return_value=None):
-            self.assertRegex(log_entry["sid"], self.FULL_SID_REGEX)
+        assert event_log.Write() is None
-        else:
+
-            self.assertRegex(log_entry["sid"], self.SELF_SID_REGEX)
+
-        self.assertRegex(
+def test_write_non_string(event_log: git_trace2_event_log.EventLog) -> None:
-            log_entry["time"], r"^\d+-\d+-\d+T\d+:\d+:\d+\.\d+\+00:00$"
+    """Test Write() with non-string type for |path| throws TypeError."""
+    with pytest.raises(TypeError):
+        event_log.Write(path=1234)
+
+
+@pytest.mark.skipif(
+    not hasattr(socket, "AF_UNIX"), reason="Requires AF_UNIX sockets"
+)
+def test_write_socket(event_log: git_trace2_event_log.EventLog) -> None:
+    """Test Write() with Unix domain socket and validate received traces."""
+    received_traces: List[str] = []
+    with tempfile.TemporaryDirectory(prefix="test_server_sockets") as tempdir:
+        socket_path = os.path.join(tempdir, "server.sock")
+        server_ready = threading.Condition()
+        # Start "server" listening on Unix domain socket at socket_path.
+        server_thread = threading.Thread(
+            target=server_logging_thread,
+            args=(socket_path, server_ready, received_traces),
         )
+        try:
+            server_thread.start()
 
-    def readLog(self, log_path):
+            with server_ready:
-        """Helper function to read log data into a list."""
+                server_ready.wait(timeout=120)
-        log_data = []
-        with open(log_path, mode="rb") as f:
-            for line in f:
-                log_data.append(json.loads(line))
-        return log_data
 
-    def remove_prefix(self, s, prefix):
+            event_log.StartEvent([])
-        """Return a copy string after removing |prefix| from |s|, if present or
+            path = event_log.Write(path=f"af_unix:{socket_path}")
-        the original string."""
+        finally:
-        if s.startswith(prefix):
+            server_thread.join(timeout=5)
-            return s[len(prefix) :]
-        else:
-            return s
 
-    def test_initial_state_with_parent_sid(self):
+    assert path == f"af_unix:stream:{socket_path}"
-        """Test initial state when 'GIT_TRACE2_PARENT_SID' is set by parent."""
+    assert len(received_traces) == 2
-        self.assertRegex(self._event_log_module.full_sid, self.FULL_SID_REGEX)
+    version_event = json.loads(received_traces[0])
+    start_event = json.loads(received_traces[1])
+    verify_common_keys(version_event, expected_event_name="version")
+    verify_common_keys(start_event, expected_event_name="start")
+    # Check for 'start' event specific fields.
+    assert "argv" in start_event
+    assert isinstance(start_event["argv"], list)
 
-    def test_initial_state_no_parent_sid(self):
-        """Test initial state when 'GIT_TRACE2_PARENT_SID' is not set."""
-        # Setup an empty environment dict (no parent sid).
-        self._event_log_module = git_trace2_event_log.EventLog(env={})
-        self.assertRegex(self._event_log_module.full_sid, self.SELF_SID_REGEX)
 
-    def test_version_event(self):
+class TestEventLogVerbose:
-        """Test 'version' event data is valid.
+    """TestCase for the EventLog module verbose logging."""
 
-        Verify that the 'version' event is written even when no other
+    def test_write_socket_error_no_verbose(self) -> None:
-        events are addded.
+        """Test Write() suppression of socket errors when not verbose."""
+        event_log = git_trace2_event_log.EventLog(env={})
+        event_log.verbose = False
+        with contextlib.redirect_stderr(
+            io.StringIO()
+        ) as mock_stderr, mock.patch("socket.socket", side_effect=OSError):
+            event_log.Write(path="af_unix:stream:/tmp/test_sock")
+            assert mock_stderr.getvalue() == ""
 
-        Expected event log:
+    def test_write_socket_error_verbose(self) -> None:
-        <version event>
+        """Test Write() printing of socket errors when verbose."""
-        """
+        event_log = git_trace2_event_log.EventLog(env={})
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
+        event_log.verbose = True
-            log_path = self._event_log_module.Write(path=tempdir)
+        with contextlib.redirect_stderr(
-            self._log_data = self.readLog(log_path)
+            io.StringIO()
-
+        ) as mock_stderr, mock.patch(
-        # A log with no added events should only have the version entry.
+            "socket.socket", side_effect=OSError("Mock error")
-        self.assertEqual(len(self._log_data), 1)
-        version_event = self._log_data[0]
-        self.verifyCommonKeys(version_event, expected_event_name="version")
-        # Check for 'version' event specific fields.
-        self.assertIn("evt", version_event)
-        self.assertIn("exe", version_event)
-        # Verify "evt" version field is a string.
-        self.assertIsInstance(version_event["evt"], str)
-
-    def test_start_event(self):
-        """Test and validate 'start' event data is valid.
-
-        Expected event log:
-        <version event>
-        <start event>
-        """
-        self._event_log_module.StartEvent()
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 2)
-        start_event = self._log_data[1]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-        self.verifyCommonKeys(start_event, expected_event_name="start")
-        # Check for 'start' event specific fields.
-        self.assertIn("argv", start_event)
-        self.assertTrue(isinstance(start_event["argv"], list))
-
-    def test_exit_event_result_none(self):
-        """Test 'exit' event data is valid when result is None.
-
-        We expect None result to be converted to 0 in the exit event data.
-
-        Expected event log:
-        <version event>
-        <exit event>
-        """
-        self._event_log_module.ExitEvent(None)
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 2)
-        exit_event = self._log_data[1]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-        self.verifyCommonKeys(exit_event, expected_event_name="exit")
-        # Check for 'exit' event specific fields.
-        self.assertIn("code", exit_event)
-        # 'None' result should convert to 0 (successful) return code.
-        self.assertEqual(exit_event["code"], 0)
-
-    def test_exit_event_result_integer(self):
-        """Test 'exit' event data is valid when result is an integer.
-
-        Expected event log:
-        <version event>
-        <exit event>
-        """
-        self._event_log_module.ExitEvent(2)
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 2)
-        exit_event = self._log_data[1]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-        self.verifyCommonKeys(exit_event, expected_event_name="exit")
-        # Check for 'exit' event specific fields.
-        self.assertIn("code", exit_event)
-        self.assertEqual(exit_event["code"], 2)
-
-    def test_command_event(self):
-        """Test and validate 'command' event data is valid.
-
-        Expected event log:
-        <version event>
-        <command event>
-        """
-        name = "repo"
-        subcommands = ["init" "this"]
-        self._event_log_module.CommandEvent(
-            name="repo", subcommands=subcommands
-        )
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 2)
-        command_event = self._log_data[1]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-        self.verifyCommonKeys(command_event, expected_event_name="command")
-        # Check for 'command' event specific fields.
-        self.assertIn("name", command_event)
-        self.assertIn("subcommands", command_event)
-        self.assertEqual(command_event["name"], name)
-        self.assertEqual(command_event["subcommands"], subcommands)
-
-    def test_def_params_event_repo_config(self):
-        """Test 'def_params' event data outputs only repo config keys.
-
-        Expected event log:
-        <version event>
-        <def_param event>
-        <def_param event>
-        """
-        config = {
-            "git.foo": "bar",
-            "repo.partialclone": "true",
-            "repo.partialclonefilter": "blob:none",
-        }
-        self._event_log_module.DefParamRepoEvents(config)
-
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 3)
-        def_param_events = self._log_data[1:]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-
-        for event in def_param_events:
-            self.verifyCommonKeys(event, expected_event_name="def_param")
-            # Check for 'def_param' event specific fields.
-            self.assertIn("param", event)
-            self.assertIn("value", event)
-            self.assertTrue(event["param"].startswith("repo."))
-
-    def test_def_params_event_no_repo_config(self):
-        """Test 'def_params' event data won't output non-repo config keys.
-
-        Expected event log:
-        <version event>
-        """
-        config = {
-            "git.foo": "bar",
-            "git.core.foo2": "baz",
-        }
-        self._event_log_module.DefParamRepoEvents(config)
-
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 1)
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-
-    def test_data_event_config(self):
-        """Test 'data' event data outputs all config keys.
-
-        Expected event log:
-        <version event>
-        <data event>
-        <data event>
-        """
-        config = {
-            "git.foo": "bar",
-            "repo.partialclone": "false",
-            "repo.syncstate.superproject.hassuperprojecttag": "true",
-            "repo.syncstate.superproject.sys.argv": ["--", "sync", "protobuf"],
-        }
-        prefix_value = "prefix"
-        self._event_log_module.LogDataConfigEvents(config, prefix_value)
-
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 5)
-        data_events = self._log_data[1:]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-
-        for event in data_events:
-            self.verifyCommonKeys(event)
-            # Check for 'data' event specific fields.
-            self.assertIn("key", event)
-            self.assertIn("value", event)
-            key = event["key"]
-            key = self.remove_prefix(key, f"{prefix_value}/")
-            value = event["value"]
-            self.assertEqual(
-                self._event_log_module.GetDataEventName(value), event["event"]
-            )
-            self.assertTrue(key in config and value == config[key])
-
-    def test_error_event(self):
-        """Test and validate 'error' event data is valid.
-
-        Expected event log:
-        <version event>
-        <error event>
-        """
-        msg = "invalid option: --cahced"
-        fmt = "invalid option: %s"
-        self._event_log_module.ErrorEvent(msg, fmt)
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            log_path = self._event_log_module.Write(path=tempdir)
-            self._log_data = self.readLog(log_path)
-
-        self.assertEqual(len(self._log_data), 2)
-        error_event = self._log_data[1]
-        self.verifyCommonKeys(self._log_data[0], expected_event_name="version")
-        self.verifyCommonKeys(error_event, expected_event_name="error")
-        # Check for 'error' event specific fields.
-        self.assertIn("msg", error_event)
-        self.assertIn("fmt", error_event)
-        self.assertEqual(error_event["msg"], f"RepoErrorEvent:{msg}")
-        self.assertEqual(error_event["fmt"], f"RepoErrorEvent:{fmt}")
-
-    def test_write_with_filename(self):
-        """Test Write() with a path to a file exits with None."""
-        self.assertIsNone(self._event_log_module.Write(path="path/to/file"))
-
-    def test_write_with_git_config(self):
-        """Test Write() uses the git config path when 'git config' call
-        succeeds."""
-        with tempfile.TemporaryDirectory(prefix="event_log_tests") as tempdir:
-            with mock.patch.object(
-                self._event_log_module,
-                "_GetEventTargetPath",
-                return_value=tempdir,
-            ):
-                self.assertEqual(
-                    os.path.dirname(self._event_log_module.Write()), tempdir
-                )
-
-    def test_write_no_git_config(self):
-        """Test Write() with no git config variable present exits with None."""
-        with mock.patch.object(
-            self._event_log_module, "_GetEventTargetPath", return_value=None
         ):
-            self.assertIsNone(self._event_log_module.Write())
+            event_log.Write(path="af_unix:stream:/tmp/test_sock")
+            assert (
+                "git trace2 logging failed: Mock error"
+                in mock_stderr.getvalue()
+            )
 
-    def test_write_non_string(self):
+    def test_write_file_error_no_verbose(self) -> None:
-        """Test Write() with non-string type for |path| throws TypeError."""
+        """Test Write() suppression of file errors when not verbose."""
-        with self.assertRaises(TypeError):
+        event_log = git_trace2_event_log.EventLog(env={})
-            self._event_log_module.Write(path=1234)
+        event_log.verbose = False
+        with contextlib.redirect_stderr(
+            io.StringIO()
+        ) as mock_stderr, mock.patch(
+            "tempfile.NamedTemporaryFile", side_effect=FileExistsError
+        ):
+            event_log.Write(path="/tmp")
+            assert mock_stderr.getvalue() == ""
 
-    def test_write_socket(self):
+    def test_write_file_error_verbose(self) -> None:
-        """Test Write() with Unix domain socket for |path| and validate received
+        """Test Write() printing of file errors when verbose."""
-        traces."""
+        event_log = git_trace2_event_log.EventLog(env={})
-        received_traces = []
+        event_log.verbose = True
-        with tempfile.TemporaryDirectory(
+        with contextlib.redirect_stderr(
-            prefix="test_server_sockets"
+            io.StringIO()
-        ) as tempdir:
+        ) as mock_stderr, mock.patch(
-            socket_path = os.path.join(tempdir, "server.sock")
+            "tempfile.NamedTemporaryFile",
-            server_ready = threading.Condition()
+            side_effect=FileExistsError("Mock error"),
-            # Start "server" listening on Unix domain socket at socket_path.
+        ):
-            try:
+            event_log.Write(path="/tmp")
-                server_thread = threading.Thread(
+            assert (
-                    target=serverLoggingThread,
+                "git trace2 logging failed: FileExistsError"
-                    args=(socket_path, server_ready, received_traces),
+                in mock_stderr.getvalue()
-                )
+            )
-                server_thread.start()
-
-                with server_ready:
-                    server_ready.wait(timeout=120)
-
-                self._event_log_module.StartEvent()
-                path = self._event_log_module.Write(
-                    path=f"af_unix:{socket_path}"
-                )
-            finally:
-                server_thread.join(timeout=5)
-
-        self.assertEqual(path, f"af_unix:stream:{socket_path}")
-        self.assertEqual(len(received_traces), 2)
-        version_event = json.loads(received_traces[0])
-        start_event = json.loads(received_traces[1])
-        self.verifyCommonKeys(version_event, expected_event_name="version")
-        self.verifyCommonKeys(start_event, expected_event_name="start")
-        # Check for 'start' event specific fields.
-        self.assertIn("argv", start_event)
-        self.assertIsInstance(start_event["argv"], list)

tests/test_hooks.py

@@ -14,42 +14,47 @@
 
 """Unittests for the hooks.py module."""
 
-import unittest
+import pytest
 
 import hooks
 
 
-class RepoHookShebang(unittest.TestCase):
+@pytest.mark.parametrize(
-    """Check shebang parsing in RepoHook."""
+    "data",
+    (
+        "",
+        "#\n# foo\n",
+        "# Bad shebang in script\n#!/foo\n",
+    ),
+)
+def test_no_shebang(data: str) -> None:
+    """Lines w/out shebangs should be rejected."""
+    assert hooks.RepoHook._ExtractInterpFromShebang(data) is None
 
-    def test_no_shebang(self):
-        """Lines w/out shebangs should be rejected."""
-        DATA = ("", "#\n# foo\n", "# Bad shebang in script\n#!/foo\n")
-        for data in DATA:
-            self.assertIsNone(hooks.RepoHook._ExtractInterpFromShebang(data))
 
-    def test_direct_interp(self):
+@pytest.mark.parametrize(
-        """Lines whose shebang points directly to the interpreter."""
+    "shebang, interp",
-        DATA = (
+    (
-            ("#!/foo", "/foo"),
+        ("#!/foo", "/foo"),
-            ("#! /foo", "/foo"),
+        ("#! /foo", "/foo"),
-            ("#!/bin/foo ", "/bin/foo"),
+        ("#!/bin/foo ", "/bin/foo"),
-            ("#! /usr/foo ", "/usr/foo"),
+        ("#! /usr/foo ", "/usr/foo"),
-            ("#! /usr/foo -args", "/usr/foo"),
+        ("#! /usr/foo -args", "/usr/foo"),
-        )
+    ),
-        for shebang, interp in DATA:
+)
-            self.assertEqual(
+def test_direct_interp(shebang: str, interp: str) -> None:
-                hooks.RepoHook._ExtractInterpFromShebang(shebang), interp
+    """Lines whose shebang points directly to the interpreter."""
-            )
+    assert hooks.RepoHook._ExtractInterpFromShebang(shebang) == interp
 
-    def test_env_interp(self):
+
-        """Lines whose shebang launches through `env`."""
+@pytest.mark.parametrize(
-        DATA = (
+    "shebang, interp",
-            ("#!/usr/bin/env foo", "foo"),
+    (
-            ("#!/bin/env foo", "foo"),
+        ("#!/usr/bin/env foo", "foo"),
-            ("#! /bin/env /bin/foo ", "/bin/foo"),
+        ("#!/bin/env foo", "foo"),
-        )
+        ("#! /bin/env /bin/foo ", "/bin/foo"),
-        for shebang, interp in DATA:
+    ),
-            self.assertEqual(
+)
-                hooks.RepoHook._ExtractInterpFromShebang(shebang), interp
+def test_env_interp(shebang: str, interp: str) -> None:
-            )
+    """Lines whose shebang launches through `env`."""
+    assert hooks.RepoHook._ExtractInterpFromShebang(shebang) == interp

tests/test_main.py

@@ -0,0 +1,166 @@
+# Copyright (C) 2026 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Tests for the main repo script and subcommand routing."""
+
+from unittest import mock
+
+import pytest
+
+from main import _Repo
+
+
+@pytest.fixture(name="repo")
+def fixture_repo():
+    repo = _Repo("repodir")
+    # Overriding the command list here ensures that we are only testing
+    # against a fixed set of commands, reducing fragility to new
+    # subcommands being added to the main repo tool.
+    repo.commands = {"start": None, "sync": None, "smart": None}
+    return repo
+
+
+@pytest.fixture(name="mock_config")
+def fixture_mock_config():
+    return mock.MagicMock()
+
+
+@mock.patch("time.sleep")
+def test_autocorrect_delay(mock_sleep, repo, mock_config):
+    """Test autocorrect with positive delay."""
+    mock_config.GetString.return_value = "10"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    mock_config.GetString.assert_called_with("help.autocorrect")
+    mock_sleep.assert_called_with(1.0)
+    assert res == "start"
+
+
+@mock.patch("time.sleep")
+def test_autocorrect_delay_one(mock_sleep, repo, mock_config):
+    """Test autocorrect with '1' (0.1s delay, not immediate)."""
+    mock_config.GetString.return_value = "1"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    mock_sleep.assert_called_with(0.1)
+    assert res == "start"
+
+
+@mock.patch("time.sleep", side_effect=KeyboardInterrupt())
+def test_autocorrect_delay_interrupt(mock_sleep, repo, mock_config):
+    """Test autocorrect handles KeyboardInterrupt during delay."""
+    mock_config.GetString.return_value = "10"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    mock_sleep.assert_called_with(1.0)
+    assert res is None
+
+
+@mock.patch("time.sleep")
+def test_autocorrect_immediate(mock_sleep, repo, mock_config):
+    """Test autocorrect with immediate/negative delay."""
+    # Test numeric negative.
+    mock_config.GetString.return_value = "-1"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    mock_sleep.assert_not_called()
+    assert res == "start"
+
+    # Test string boolean "true".
+    mock_config.GetString.return_value = "true"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    mock_sleep.assert_not_called()
+    assert res == "start"
+
+    # Test string boolean "yes".
+    mock_config.GetString.return_value = "YES"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    mock_sleep.assert_not_called()
+    assert res == "start"
+
+    # Test string boolean "immediate".
+    mock_config.GetString.return_value = "Immediate"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    mock_sleep.assert_not_called()
+    assert res == "start"
+
+
+def test_autocorrect_zero_or_show(repo, mock_config):
+    """Test autocorrect with zero delay (suggestions only)."""
+    # Test numeric zero.
+    mock_config.GetString.return_value = "0"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    assert res is None
+
+    # Test string boolean "false".
+    mock_config.GetString.return_value = "False"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    assert res is None
+
+    # Test string boolean "show".
+    mock_config.GetString.return_value = "show"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    assert res is None
+
+
+def test_autocorrect_never(repo, mock_config):
+    """Test autocorrect with 'never'."""
+    mock_config.GetString.return_value = "never"
+    res = repo._autocorrect_command_name("tart", mock_config)
+    assert res is None
+
+
+@mock.patch("builtins.input", return_value="y")
+def test_autocorrect_prompt_yes(mock_input, repo, mock_config):
+    """Test autocorrect with prompt and user answers yes."""
+    mock_config.GetString.return_value = "prompt"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    assert res == "start"
+
+
+@mock.patch("builtins.input", return_value="n")
+def test_autocorrect_prompt_no(mock_input, repo, mock_config):
+    """Test autocorrect with prompt and user answers no."""
+    mock_config.GetString.return_value = "prompt"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    assert res is None
+
+
+@mock.patch("builtins.input", return_value="y")
+def test_autocorrect_multiple_candidates(mock_input, repo, mock_config):
+    """Test autocorrect with multiple matches forces a prompt."""
+    mock_config.GetString.return_value = "10"  # Normally just delay
+
+    # 'snart' matches both 'start' and 'smart' with > 0.7 ratio
+    res = repo._autocorrect_command_name("snart", mock_config)
+
+    # Because there are multiple candidates, it should prompt
+    mock_input.assert_called_once()
+    assert res == "start"
+
+
+@mock.patch("builtins.input", side_effect=KeyboardInterrupt())
+def test_autocorrect_prompt_interrupt(mock_input, repo, mock_config):
+    """Test autocorrect with prompt and user interrupts."""
+    mock_config.GetString.return_value = "prompt"
+
+    res = repo._autocorrect_command_name("tart", mock_config)
+
+    assert res is None