sync: skip bloat check if fresh sync

Initial syncs won't have accumulated any garbage.

Bug: 379111283
Change-Id: I04b2ecde3e33f1f055038861a2705ab6aabb36d1
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/536083
Commit-Queue: Gavin Mak <gavinmak@google.com>
Reviewed-by: Mike Frysinger <vapier@google.com>
Tested-by: 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/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.

.isort.cfg

@@ -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.

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>

command.py

@@ -399,7 +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:

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.

docs/manifest-format.md

@@ -59,7 +59,7 @@ 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>
@@ -81,9 +81,9 @@ following DTD:
   <!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 upstream    CDATA #IMPLIED>
   <!ATTLIST project clone-depth CDATA #IMPLIED>
-  <!ATTLIST project force-path CDATA #IMPLIED>
+  <!ATTLIST project force-path  CDATA #IMPLIED>
 
   <!ELEMENT annotation EMPTY>
   <!ATTLIST annotation name  CDATA #REQUIRED>
@@ -95,19 +95,21 @@ 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>
-  <!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>
+  <!ELEMENT extend-project (annotation*,
+                            copyfile*,
+                            linkfile*)>
+  <!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 base-rev 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>
@@ -116,7 +118,7 @@ following DTD:
   <!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>
@@ -125,7 +127,7 @@ 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>
@@ -285,7 +287,7 @@ 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`.
@@ -353,7 +355,7 @@ 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
@@ -401,7 +403,7 @@ 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
@@ -427,19 +429,20 @@ 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.
-For projects, this name-value pair will be exported into each project's
-environment during a 'forall' command, prefixed with `REPO__`.  In addition,
-there is an optional attribute "keep" which accepts the case insensitive values
-"true" (default) or "false".  This attribute determines whether or not the
+project element, an extend-project element, or a remote element. Each
+element describes a name-value pair. For projects, this name-value pair
+will be exported into each project's environment during a 'forall'
+command, prefixed with `REPO__`.  In addition, there is an optional
+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;
-the "src" file will be copied to the "dest" place during `repo sync`
-command.
+project element, or an extend-project element. Each element describes a
+src-dest pair of files; the "src" file will be copied to the "dest"
+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
@@ -450,10 +453,14 @@ 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
-instead of copying it creates a symlink.
+It's just like copyfile, but 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.
@@ -463,6 +470,11 @@ 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
@@ -560,13 +572,16 @@ 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/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.
+    """
+```

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

@@ -28,6 +28,7 @@ import os
 import sys
 import time
 from typing import NamedTuple
+import urllib.parse
 
 from git_command import git_require
 from git_command import GitCommand
@@ -128,6 +129,30 @@ 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 +165,33 @@ 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"""
@@ -258,7 +304,7 @@ 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 +334,7 @@ class Superproject:
                 retval,
                 p.stderr,
             )
+            return None
         return data
 
     def Sync(self, git_event_log):
@@ -375,7 +422,8 @@ 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:

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

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)

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");

man/repo-gc.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "December 2024" "repo gc" "Repo Manual"
+.TH REPO "1" "April 2025" "repo gc" "Repo Manual"
 .SH NAME
 repo \- repo gc - manual page for repo gc
 .SH SYNOPSIS
@@ -8,7 +8,7 @@ repo \- repo gc - manual page for repo gc
 .SH DESCRIPTION
 Summary
 .PP
-Cleaning up internal repo state.
+Cleaning up internal repo and Git state.
 .SH OPTIONS
 .TP
 \fB\-h\fR, \fB\-\-help\fR
@@ -19,6 +19,10 @@ 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

man/repo-manifest.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "December 2024" "repo manifest" "Repo Manual"
+.TH REPO "1" "December 2025" "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
-output manifest in JSON format (experimental)
+\fB\-\-format\fR=\fI\,FORMAT\/\fR
+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
@@ -135,7 +139,7 @@ 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>
@@ -166,9 +170,9 @@ 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 upstream    CDATA #IMPLIED>
 <!ATTLIST project clone\-depth CDATA #IMPLIED>
-<!ATTLIST project force\-path CDATA #IMPLIED>
+<!ATTLIST project force\-path  CDATA #IMPLIED>
 .IP
 <!ELEMENT annotation EMPTY>
 <!ATTLIST annotation name  CDATA #REQUIRED>
@@ -180,19 +184,34 @@ 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 base\-rev 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 #IMPLIED>
@@ -201,7 +220,7 @@ 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>
@@ -210,7 +229,7 @@ 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>
@@ -306,25 +325,7 @@ 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:
-.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.
+See the [smart sync documentation](./smart\-sync.md) for more details.
 .PP
 Element submanifest
 .PP
@@ -376,7 +377,7 @@ 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`.
@@ -438,7 +439,7 @@ 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
@@ -482,8 +483,8 @@ 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.
-Same syntax as the corresponding element of `project`.
+Attribute `groups`: Set of additional groups to which this project belongs. Same
+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`.
@@ -507,19 +508,21 @@ element of `project`.
 .PP
 Element annotation
 .PP
-Zero or more annotation elements may be specified as children of a project or
-remote element. Each element describes a name\-value pair. For projects, this
-name\-value pair will be exported into each project's environment during a
-\&'forall' command, prefixed with `REPO__`. In addition, there is an optional
-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.
+Zero or more annotation elements may be specified as children of a project
+element, an extend\-project element, or a remote element. Each element describes
+a name\-value pair. For projects, this name\-value pair will be exported into each
+project's environment during a 'forall' command, prefixed with `REPO__`. In
+addition, there is an optional 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.
 .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
-copied to the "dest" place during `repo sync` command.
+element, or an extend\-project element. Each element describes a src\-dest pair of
+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
@@ -530,10 +533,14 @@ 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
-copying it creates a symlink.
+It's just like copyfile, but instead of 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.
@@ -543,6 +550,11 @@ 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.
 .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 a project from the internal manifest table, possibly allowing a
@@ -634,13 +646,16 @@ 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
 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.
 .PP
 Local Manifests
 .PP

man/repo-smartsync.1

@@ -1,5 +1,5 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man.
-.TH REPO "1" "September 2024" "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)
@@ -58,6 +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
@@ -145,6 +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" "September 2024" "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)
@@ -58,6 +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
@@ -152,6 +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

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" "December 2024" "repo" "Repo Manual"
+.TH REPO "1" "November 2025" "repo" "Repo Manual"
 .SH NAME
 repo \- repository management tool built on top of git
 .SH SYNOPSIS
@@ -80,7 +80,7 @@ forall
 Run a shell command in each project
 .TP
 gc
-Cleaning up internal repo state.
+Cleaning up internal repo and Git state.
 .TP
 grep
 Print lines matching a pattern
@@ -132,6 +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

@@ -255,7 +255,7 @@ 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 +281,7 @@ 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 +304,7 @@ 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 +345,7 @@ 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 +359,7 @@ class _XmlSubmanifest:
 
     def GetGroupsStr(self):
         """Returns the `groups` given for this submanifest."""
-        if self.groups:
-            return ",".join(self.groups)
-        return ""
+        return ",".join(sorted(self.groups))
 
     def GetDefaultGroupsStr(self):
         """Returns the `default-groups` given for this submanifest."""
@@ -381,7 +379,7 @@ class SubmanifestSpec:
         self.manifestName = manifestName
         self.revision = revision
         self.path = path
-        self.groups = groups or []
+        self.groups = groups
 
 
 class XmlManifest:
@@ -393,7 +391,7 @@ class XmlManifest:
         manifest_file,
         local_manifests=None,
         outer_client=None,
-        parent_groups="",
+        parent_groups=None,
         submanifest_path="",
         default_groups=None,
     ):
@@ -409,7 +407,8 @@ 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.
         """
@@ -432,7 +431,7 @@ 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 submanifest_path and not outer_client:
@@ -567,21 +566,29 @@ 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:
-            groups = mp.manifest_groups
-        if groups:
-            groups = self._ParseList(groups)
+        if filter_groups is None:
+            filter_groups = mp.manifest_groups
+        if filter_groups:
+            filter_groups = self._ParseList(filter_groups)
 
         doc = xml.dom.minidom.Document()
         root = doc.createElement("manifest")
@@ -654,7 +661,7 @@ 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):
@@ -725,10 +732,9 @@ 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]
-            egroups = [g for g in p.groups if g not in default_groups]
-            if egroups:
-                e.setAttribute("groups", ",".join(egroups))
+            groups = p.groups - {"all", f"name:{p.name}", f"path:{p.relpath}"}
+            if groups:
+                e.setAttribute("groups", ",".join(sorted(groups)))
 
             for a in p.annotations:
                 if a.keep == "true":
@@ -1116,7 +1122,7 @@ 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()
@@ -1171,12 +1177,12 @@ 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.
@@ -1202,16 +1208,16 @@ 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,
                                     )
@@ -1262,7 +1268,7 @@ 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,
     ):
@@ -1271,11 +1277,11 @@ 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
-                projects.
+            parent_node: The parent include node, to apply attributes to this
+                manifest.
 
         Returns:
             List of XML nodes.
@@ -1299,6 +1305,14 @@ 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:
@@ -1307,12 +1321,10 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                         raise ManifestInvalidPathError(
                             f'<include> invalid "name": {name}: {msg}'
                         )
-                include_groups = ""
-                if parent_groups:
-                    include_groups = parent_groups
+                include_groups = (parent_groups or set()).copy()
                 if node.hasAttribute("groups"):
-                    include_groups = (
-                        node.getAttribute("groups") + "," + include_groups
+                    include_groups |= self._ParseSet(
+                        node.getAttribute("groups")
                     )
                 fp = os.path.join(include_root, name)
                 if not os.path.isfile(fp):
@@ -1328,33 +1340,23 @@ 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 (
-                    KeyboardInterrupt,
-                    RuntimeError,
-                    SystemExit,
-                    ManifestParseError,
-                ):
+                except (RuntimeError, ManifestParseError):
                     raise
                 except Exception as e:
                     raise ManifestParseError(
                         f"failed parsing included manifest {name}: {e}"
                     )
             else:
-                if parent_groups and node.nodeName == "project":
-                    nodeGroups = parent_groups
-                    if node.hasAttribute("groups"):
-                        nodeGroups = (
-                            node.getAttribute("groups") + "," + nodeGroups
-                        )
-                    node.setAttribute("groups", nodeGroups)
-                if (
-                    parent_node
-                    and node.nodeName == "project"
-                    and not node.hasAttribute("revision")
+                if parent_groups and node.nodeName in (
+                    "project",
+                    "extend-project",
                 ):
-                    node.setAttribute(
-                        "revision", parent_node.getAttribute("revision")
-                    )
+                    nodeGroups = parent_groups.copy()
+                    if node.hasAttribute("groups"):
+                        nodeGroups |= self._ParseSet(
+                            node.getAttribute("groups")
+                        )
+                    node.setAttribute("groups", ",".join(sorted(nodeGroups)))
                 nodes.append(node)
         return nodes
 
@@ -1463,7 +1465,7 @@ 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:
@@ -1484,7 +1486,7 @@ 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
                     if revision:
                         if base_revision:
                             if p.revisionExpr != base_revision:
@@ -1514,6 +1516,14 @@ 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:
@@ -1807,7 +1817,7 @@ 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 == "":
@@ -1916,11 +1926,6 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
 
         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,
@@ -1935,8 +1940,11 @@ https://gerrit.googlesource.com/git-repo/+/HEAD/docs/manifest-format.md
                 parent, name, path
             )
 
-        default_groups = ["all", "name:%s" % name, "path:%s" % relpath]
-        groups.extend(set(default_groups).difference(groups))
+        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):
@@ -1968,11 +1976,11 @@ 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)
                 )

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
@@ -101,6 +104,7 @@ class Progress:
         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
@@ -118,6 +122,11 @@ class Progress:
         if not quiet and 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)
@@ -127,11 +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)
-        sys.stderr.flush()
+        _STDERR.write(s)
+        _STDERR.flush()
 
     def start(self, name):
         self._active += 1
@@ -195,7 +204,26 @@ 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 self._quiet:
             return

project.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import datetime
 import errno
 import filecmp
 import glob
@@ -390,22 +391,17 @@ def _SafeExpandPath(base, subpath, skipfinal=False):
     return path
 
 
-class _CopyFile:
+class _CopyFile(NamedTuple):
     """Container for <copyfile> manifest element."""
 
-    def __init__(self, git_worktree, src, topdir, dest):
-        """Register a <copyfile> request.
-
-        Args:
-            git_worktree: Absolute path to the git project checkout.
-            src: Relative path under |git_worktree| of file to read.
-            topdir: Absolute path to the top of the repo client checkout.
-            dest: Relative path under |topdir| of file to write.
-        """
-        self.git_worktree = git_worktree
-        self.topdir = topdir
-        self.src = src
-        self.dest = dest
+    # Absolute path to the git project checkout.
+    git_worktree: str
+    # Relative path under |git_worktree| of file to read.
+    src: str
+    # Absolute path to the top of the repo client checkout.
+    topdir: str
+    # Relative path under |topdir| of file to write.
+    dest: str
 
     def _Copy(self):
         src = _SafeExpandPath(self.git_worktree, self.src)
@@ -439,22 +435,17 @@ class _CopyFile:
                 logger.error("error: Cannot copy file %s to %s", src, dest)
 
 
-class _LinkFile:
+class _LinkFile(NamedTuple):
     """Container for <linkfile> manifest element."""
 
-    def __init__(self, git_worktree, src, topdir, dest):
-        """Register a <linkfile> request.
-
-        Args:
-            git_worktree: Absolute path to the git project checkout.
-            src: Target of symlink relative to path under |git_worktree|.
-            topdir: Absolute path to the top of the repo client checkout.
-            dest: Relative path under |topdir| of symlink to create.
-        """
-        self.git_worktree = git_worktree
-        self.topdir = topdir
-        self.src = src
-        self.dest = dest
+    # Absolute path to the git project checkout.
+    git_worktree: str
+    # Target of symlink relative to path under |git_worktree|.
+    src: str
+    # Absolute path to the top of the repo client checkout.
+    topdir: str
+    # Relative path under |topdir| of symlink to create.
+    dest: str
 
     def __linkIt(self, relSrc, absDest):
         # Link file if it does not exist or is out of date.
@@ -471,9 +462,7 @@ class _LinkFile:
                         os.makedirs(dest_dir)
                 platform_utils.symlink(relSrc, absDest)
             except OSError:
-                logger.error(
-                    "error: Cannot link file %s to %s", relSrc, absDest
-                )
+                logger.error("error: Cannot symlink %s to %s", absDest, relSrc)
 
     def _Link(self):
         """Link the self.src & self.dest paths.
@@ -564,7 +553,7 @@ class Project:
         revisionExpr,
         revisionId,
         rebase=True,
-        groups=None,
+        groups=set(),
         sync_c=False,
         sync_s=False,
         sync_tags=True,
@@ -633,8 +622,9 @@ class Project:
         self.subprojects = []
 
         self.snapshots = {}
-        self.copyfiles = []
-        self.linkfiles = []
+        # Use dicts to dedupe while maintaining declared order.
+        self.copyfiles = {}
+        self.linkfiles = {}
         self.annotations = []
         self.dest_branch = dest_branch
 
@@ -642,10 +632,6 @@ class Project:
         # project containing repo hooks.
         self.enabled_repo_hooks = []
 
-        # This will be updated later if the project has submodules and
-        # if they will be synced.
-        self.has_subprojects = False
-
     def RelPath(self, local=True):
         """Return the path for the project relative to a manifest.
 
@@ -852,9 +838,9 @@ class Project:
         """
         default_groups = self.manifest.default_groups or ["default"]
         expanded_manifest_groups = manifest_groups or default_groups
-        expanded_project_groups = ["all"] + (self.groups or [])
+        expanded_project_groups = {"all"} | self.groups
         if "notdefault" not in expanded_project_groups:
-            expanded_project_groups += ["default"]
+            expanded_project_groups |= {"default"}
 
         matched = False
         for group in expanded_manifest_groups:
@@ -1539,18 +1525,14 @@ class Project:
         force_checkout=False,
         force_rebase=False,
         submodules=False,
-        errors=None,
         verbose=False,
     ):
         """Perform only the local IO portion of the sync process.
 
         Network access is not required.
         """
-        if errors is None:
-            errors = []
 
         def fail(error: Exception):
-            errors.append(error)
             syncbuf.fail(self, error)
 
         if not os.path.exists(self.gitdir):
@@ -1567,8 +1549,8 @@ class Project:
         # TODO(https://git-scm.com/docs/git-worktree#_bugs): Re-evaluate if
         # submodules can be init when using worktrees once its support is
         # complete.
-        if self.has_subprojects and not self.use_git_worktrees:
-            self._InitSubmodules()
+        if self.parent and not self.use_git_worktrees:
+            self._InitSubmodule()
         all_refs = self.bare_ref.all
         self.CleanPublishedCache(all_refs)
         revid = self.GetRevisionId(all_refs)
@@ -1597,6 +1579,9 @@ class Project:
             self._FastForward(revid)
             self._CopyAndLinkFiles()
 
+        def _dorebase():
+            self._Rebase(upstream="@{upstream}")
+
         def _dosubmodules():
             self._SyncSubmodules(quiet=True)
 
@@ -1688,19 +1673,24 @@ class Project:
         if pub:
             not_merged = self._revlist(not_rev(revid), pub)
             if not_merged:
-                if upstream_gain and not force_rebase:
-                    # The user has published this branch and some of those
-                    # commits are not yet merged upstream.  We do not want
-                    # to rewrite the published commits so we punt.
-                    fail(
-                        LocalSyncFail(
-                            "branch %s is published (but not merged) and is "
-                            "now %d commits behind. Fix this manually or rerun "
-                            "with the --rebase option to force a rebase."
-                            % (branch.name, len(upstream_gain)),
-                            project=self.name,
+                if upstream_gain:
+                    if force_rebase:
+                        # Try to rebase local published but not merged changes
+                        # on top of the upstream changes.
+                        syncbuf.later1(self, _dorebase, not verbose)
+                    else:
+                        # The user has published this branch and some of those
+                        # commits are not yet merged upstream.  We do not want
+                        # to rewrite the published commits so we punt.
+                        fail(
+                            LocalSyncFail(
+                                "branch %s is published (but not merged) and "
+                                "is now %d commits behind. Fix this manually "
+                                "or rerun with the --rebase option to force a "
+                                "rebase." % (branch.name, len(upstream_gain)),
+                                project=self.name,
+                            )
                         )
-                    )
                     return
                 syncbuf.later1(self, _doff, not verbose)
                 return
@@ -1794,7 +1784,7 @@ class Project:
         Paths should have basic validation run on them before being queued.
         Further checking will be handled when the actual copy happens.
         """
-        self.copyfiles.append(_CopyFile(self.worktree, src, topdir, dest))
+        self.copyfiles[_CopyFile(self.worktree, src, topdir, dest)] = True
 
     def AddLinkFile(self, src, dest, topdir):
         """Mark |dest| to create a symlink (relative to |topdir|) pointing to
@@ -1805,7 +1795,7 @@ class Project:
         Paths should have basic validation run on them before being queued.
         Further checking will be handled when the actual link happens.
         """
-        self.linkfiles.append(_LinkFile(self.worktree, src, topdir, dest))
+        self.linkfiles[_LinkFile(self.worktree, src, topdir, dest)] = True
 
     def AddAnnotation(self, name, value, keep):
         self.annotations.append(Annotation(name, value, keep))
@@ -2061,10 +2051,7 @@ class Project:
         if head == revid:
             # Same revision; just update HEAD to point to the new
             # target branch, but otherwise take no other action.
-            _lwrite(
-                self.work_git.GetDotgitPath(subpath=HEAD),
-                f"ref: {R_HEADS}{name}\n",
-            )
+            self.work_git.SetHead(R_HEADS + name)
             return True
 
         GitCommand(
@@ -2100,9 +2087,7 @@ class Project:
 
             revid = self.GetRevisionId(all_refs)
             if head == revid:
-                _lwrite(
-                    self.work_git.GetDotgitPath(subpath=HEAD), "%s\n" % revid
-                )
+                self.work_git.DetachHead(revid)
             else:
                 self._Checkout(revid, quiet=True)
         GitCommand(
@@ -2368,8 +2353,6 @@ class Project:
             )
             result.append(subproject)
             result.extend(subproject.GetDerivedSubprojects())
-        if result:
-            self.has_subprojects = True
         return result
 
     def EnableRepositoryExtension(self, key, value="true", version=1):
@@ -2420,7 +2403,9 @@ class Project:
             # throws an error.
             revs = [f"{self.revisionExpr}^0"]
             upstream_rev = None
-            if self.upstream:
+
+            # Only check upstream when using superproject.
+            if self.upstream and self.manifest.manifestProject.use_superproject:
                 upstream_rev = self.GetRemote().ToLocal(self.upstream)
                 revs.append(upstream_rev)
 
@@ -2432,7 +2417,9 @@ class Project:
                 log_as_error=False,
             )
 
-            if self.upstream:
+            # Only verify upstream relationship for superproject scenarios
+            # without affecting plain usage.
+            if self.upstream and self.manifest.manifestProject.use_superproject:
                 self.bare_git.merge_base(
                     "--is-ancestor",
                     self.revisionExpr,
@@ -2585,6 +2572,16 @@ class Project:
             if os.path.exists(os.path.join(self.gitdir, "shallow")):
                 cmd.append("--depth=2147483647")
 
+        # Use clone-depth="1" as a heuristic for repositories containing
+        # large binaries and disable auto GC to prevent potential hangs.
+        # Check the configured depth because the `depth` argument might be None
+        # if REPO_ALLOW_SHALLOW=0 converted it to a partial clone.
+        effective_depth = (
+            self.clone_depth or self.manifest.manifestProject.depth
+        )
+        if effective_depth == 1 and git_require((2, 23, 0)):
+            cmd.append("--no-auto-gc")
+
         if not verbose:
             cmd.append("--quiet")
         if not quiet and sys.stdout.isatty():
@@ -2755,6 +2752,14 @@ class Project:
                 # field; it doesn't exist, thus abort the optimization attempt
                 # and do a full sync.
                 break
+            elif depth and is_sha1 and ret == 1:
+                # In sha1 mode, when depth is enabled, syncing the revision
+                # from upstream may not work because some servers only allow
+                # fetching named refs. Fetching a specific sha1 may result
+                # in an error like 'server does not allow request for
+                # unadvertised object'. In this case, attempt a full sync
+                # without depth.
+                break
             elif ret < 0:
                 # Git died with a signal, exit immediately.
                 break
@@ -3027,16 +3032,39 @@ class Project:
                 project=self.name,
             )
 
-    def _InitSubmodules(self, quiet=True):
-        """Initialize the submodules for the project."""
+    def _InitSubmodule(self, quiet=True):
+        """Initialize the submodule."""
         cmd = ["submodule", "init"]
         if quiet:
             cmd.append("-q")
-        if GitCommand(self, cmd).Wait() != 0:
-            raise GitError(
-                f"{self.name} submodule init",
-                project=self.name,
+        cmd.extend(["--", self.worktree])
+        max_retries = 3
+        base_delay_secs = 1
+        jitter_ratio = 1 / 3
+        for attempt in range(max_retries):
+            git_cmd = GitCommand(
+                None,
+                cmd,
+                cwd=self.parent.worktree,
+                capture_stdout=True,
+                capture_stderr=True,
             )
+            if git_cmd.Wait() == 0:
+                return
+            error = git_cmd.stderr or git_cmd.stdout
+            if "lock" in error:
+                delay = base_delay_secs * (2**attempt)
+                delay += random.uniform(0, delay * jitter_ratio)
+                logger.warning(
+                    f"Attempt {attempt+1}/{max_retries}: "
+                    + f"git {' '.join(cmd)} failed."
+                    + f" Error: {error}."
+                    + f" Sleeping {delay:.2f}s before retrying."
+                )
+                time.sleep(delay)
+            else:
+                break
+        git_cmd.VerifyCommand()
 
     def _Rebase(self, upstream, onto=None):
         cmd = ["rebase"]
@@ -3056,8 +3084,13 @@ class Project:
             raise GitError(f"{self.name} merge {head} ", project=self.name)
 
     def _InitGitDir(self, mirror_git=None, force_sync=False, quiet=False):
+        # Prefix for temporary directories created during gitdir initialization.
+        TMP_GITDIR_PREFIX = ".tmp-project-initgitdir-"
         init_git_dir = not os.path.exists(self.gitdir)
         init_obj_dir = not os.path.exists(self.objdir)
+        tmp_gitdir = None
+        curr_gitdir = self.gitdir
+        curr_config = self.config
         try:
             # Initialize the bare repository, which contains all of the objects.
             if init_obj_dir:
@@ -3077,27 +3110,33 @@ class Project:
             # well.
             if self.objdir != self.gitdir:
                 if init_git_dir:
-                    os.makedirs(self.gitdir)
+                    os.makedirs(os.path.dirname(self.gitdir), exist_ok=True)
+                    tmp_gitdir = tempfile.mkdtemp(
+                        prefix=TMP_GITDIR_PREFIX,
+                        dir=os.path.dirname(self.gitdir),
+                    )
+                    curr_config = GitConfig.ForRepository(
+                        gitdir=tmp_gitdir, defaults=self.manifest.globalConfig
+                    )
+                    curr_gitdir = tmp_gitdir
 
                 if init_obj_dir or init_git_dir:
                     self._ReferenceGitDir(
-                        self.objdir, self.gitdir, copy_all=True
+                        self.objdir, curr_gitdir, copy_all=True
                     )
                 try:
-                    self._CheckDirReference(self.objdir, self.gitdir)
+                    self._CheckDirReference(self.objdir, curr_gitdir)
                 except GitError as e:
                     if force_sync:
-                        logger.error(
-                            "Retrying clone after deleting %s", self.gitdir
-                        )
                         try:
-                            platform_utils.rmtree(os.path.realpath(self.gitdir))
-                            if self.worktree and os.path.exists(
-                                os.path.realpath(self.worktree)
-                            ):
-                                platform_utils.rmtree(
-                                    os.path.realpath(self.worktree)
-                                )
+                            rm_dirs = (
+                                tmp_gitdir,
+                                self.gitdir,
+                                self.worktree,
+                            )
+                            for d in rm_dirs:
+                                if d and os.path.exists(d):
+                                    platform_utils.rmtree(os.path.realpath(d))
                             return self._InitGitDir(
                                 mirror_git=mirror_git,
                                 force_sync=False,
@@ -3148,18 +3187,21 @@ class Project:
                 m = self.manifest.manifestProject.config
                 for key in ["user.name", "user.email"]:
                     if m.Has(key, include_defaults=False):
-                        self.config.SetString(key, m.GetString(key))
+                        curr_config.SetString(key, m.GetString(key))
                 if not self.manifest.EnableGitLfs:
-                    self.config.SetString(
+                    curr_config.SetString(
                         "filter.lfs.smudge", "git-lfs smudge --skip -- %f"
                     )
-                    self.config.SetString(
+                    curr_config.SetString(
                         "filter.lfs.process", "git-lfs filter-process --skip"
                     )
-                self.config.SetBoolean(
+                curr_config.SetBoolean(
                     "core.bare", True if self.manifest.IsMirror else None
                 )
 
+                if tmp_gitdir:
+                    platform_utils.rename(tmp_gitdir, self.gitdir)
+                    tmp_gitdir = None
             if not init_obj_dir:
                 # The project might be shared (obj_dir already initialized), but
                 # such information is not available here. Instead of passing it,
@@ -3176,6 +3218,27 @@ class Project:
             if init_git_dir and os.path.exists(self.gitdir):
                 platform_utils.rmtree(self.gitdir)
             raise
+        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 = datetime.timedelta(days=1)
+            now = datetime.datetime.now()
+            for tmp_dir in glob.glob(
+                os.path.join(
+                    os.path.dirname(self.gitdir), f"{TMP_GITDIR_PREFIX}*"
+                )
+            ):
+                try:
+                    mtime = datetime.datetime.fromtimestamp(
+                        os.path.getmtime(tmp_dir)
+                    )
+                    if now - mtime > age_threshold:
+                        platform_utils.rmtree(tmp_dir)
+                except OSError:
+                    pass
 
     def _UpdateHooks(self, quiet=False):
         if os.path.exists(self.objdir):
@@ -3484,9 +3547,7 @@ class Project:
                 self._createDotGit(dotgit)
 
             if init_dotgit:
-                _lwrite(
-                    os.path.join(self.gitdir, HEAD), f"{self.GetRevisionId()}\n"
-                )
+                self.work_git.UpdateRef(HEAD, self.GetRevisionId(), detach=True)
 
                 # Finish checking out the worktree.
                 cmd = ["read-tree", "--reset", "-u", "-v", HEAD]
@@ -3833,19 +3894,36 @@ class Project:
 
         def GetHead(self):
             """Return the ref that HEAD points to."""
-            path = self.GetDotgitPath(subpath=HEAD)
             try:
-                with open(path) as fd:
-                    line = fd.readline()
-            except OSError as e:
-                raise NoManifestException(path, str(e))
-            try:
-                line = line.decode()
-            except AttributeError:
-                pass
-            if line.startswith("ref: "):
-                return line[5:-1]
-            return line[:-1]
+                symbolic_head = self.rev_parse("--symbolic-full-name", HEAD)
+                if symbolic_head == HEAD:
+                    # Detached HEAD. Return the commit SHA instead.
+                    return self.rev_parse(HEAD)
+                return symbolic_head
+            except GitError as e:
+                logger.warning(
+                    "project %s: unparseable HEAD; trying to recover.\n"
+                    "Check that HEAD ref in .git/HEAD is valid. The error "
+                    "was: %s",
+                    self._project.RelPath(local=False),
+                    e,
+                )
+
+                # Fallback to direct file reading for compatibility with broken
+                # repos, e.g. if HEAD points to an unborn branch.
+                path = self.GetDotgitPath(subpath=HEAD)
+                try:
+                    with open(path) as fd:
+                        line = fd.readline()
+                except OSError:
+                    raise NoManifestException(path, str(e))
+                try:
+                    line = line.decode()
+                except AttributeError:
+                    pass
+                if line.startswith("ref: "):
+                    return line[5:-1]
+                return line[:-1]
 
         def SetHead(self, ref, message=None):
             cmdv = []
@@ -4009,7 +4087,8 @@ class _Later:
             if not self.quiet:
                 out.nl()
             return True
-        except GitError:
+        except GitError as e:
+            syncbuf.fail(self.project, e)
             out.nl()
             return False
 
@@ -4025,7 +4104,12 @@ class _SyncColoring(Coloring):
 class SyncBuffer:
     def __init__(self, config, detach_head=False):
         self._messages = []
-        self._failures = []
+
+        # Failures that have not yet been printed. Cleared after printing.
+        self._pending_failures = []
+        # A persistent record of all failures during the buffer's lifetime.
+        self._all_failures = []
+
         self._later_queue1 = []
         self._later_queue2 = []
 
@@ -4040,7 +4124,9 @@ class SyncBuffer:
         self._messages.append(_InfoMessage(project, fmt % args))
 
     def fail(self, project, err=None):
-        self._failures.append(_Failure(project, err))
+        failure = _Failure(project, err)
+        self._pending_failures.append(failure)
+        self._all_failures.append(failure)
         self._MarkUnclean()
 
     def later1(self, project, what, quiet):
@@ -4060,6 +4146,11 @@ class SyncBuffer:
         self.recent_clean = True
         return recent_clean
 
+    @property
+    def errors(self):
+        """Returns a list of all exceptions accumulated in the buffer."""
+        return [f.why for f in self._all_failures if f.why]
+
     def _MarkUnclean(self):
         self.clean = False
         self.recent_clean = False
@@ -4078,18 +4169,18 @@ class SyncBuffer:
         return True
 
     def _PrintMessages(self):
-        if self._messages or self._failures:
+        if self._messages or self._pending_failures:
             if os.isatty(2):
                 self.out.write(progress.CSI_ERASE_LINE)
             self.out.write("\r")
 
         for m in self._messages:
             m.Print(self)
-        for m in self._failures:
+        for m in self._pending_failures:
             m.Print(self)
 
         self._messages = []
-        self._failures = []
+        self._pending_failures = []
 
 
 class MetaProject(Project):

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.

release/check-metadata.py

@@ -0,0 +1,152 @@
+#!/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."""
+    data = path.read_text(encoding="utf-8")
+    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])
+
+
+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/update_manpages.py

@@ -27,9 +27,11 @@ import shutil
 import subprocess
 import sys
 import tempfile
+from typing import List
 
 
-TOPDIR = Path(__file__).resolve().parent.parent
+THIS_FILE = Path(__file__).resolve()
+TOPDIR = THIS_FILE.parent.parent
 MANDIR = TOPDIR.joinpath("man")
 
 # Load repo local modules.
@@ -42,9 +44,23 @@ 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 +133,7 @@ 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 +150,17 @@ 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

@@ -14,7 +14,7 @@
 
 """Random utility code for release tools."""
 
-import os
+from pathlib import Path
 import re
 import shlex
 import subprocess
@@ -24,8 +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__)))
-HOMEDIR = os.path.expanduser("~")
+THIS_FILE = Path(__file__).resolve()
+TOPDIR = THIS_FILE.parent.parent
+HOMEDIR = Path("~").expanduser()
 
 
 # These are the release keys we sign with.
@@ -54,7 +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 python3
-#
 # Copyright (C) 2008 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

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.
@@ -17,6 +17,8 @@
 
 import functools
 import os
+import shlex
+import shutil
 import subprocess
 import sys
 from typing import List
@@ -25,6 +27,11 @@ from typing import List
 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."""
@@ -36,6 +43,7 @@ def run_pytest(argv: List[str]) -> int:
     if is_ci():
         argv = ["-m", "not skip_cq"] + argv
 
+    log_cmd("pytest", argv)
     return subprocess.run(
         [sys.executable, "-m", "pytest"] + argv,
         check=False,
@@ -48,6 +56,7 @@ def run_pytest_py38(argv: List[str]) -> int:
     if is_ci():
         argv = ["-m", "not skip_cq"] + argv
 
+    log_cmd("[vpython 3.8] pytest", argv)
     try:
         return subprocess.run(
             [
@@ -76,8 +85,10 @@ def run_black():
         "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
@@ -85,8 +96,10 @@ def run_black():
 
 def run_flake8():
     """Returns the exit code from flake8."""
+    argv = [ROOT_DIR]
+    log_cmd("flake8", argv)
     return subprocess.run(
-        [sys.executable, "-m", "flake8", ROOT_DIR],
+        [sys.executable, "-m", "flake8"] + argv,
         check=False,
         cwd=ROOT_DIR,
     ).returncode
@@ -94,8 +107,37 @@ def run_flake8():
 
 def run_isort():
     """Returns the exit code from isort."""
+    argv = ["--check", ROOT_DIR]
+    log_cmd("isort", argv)
     return subprocess.run(
-        [sys.executable, "-m", "isort", "--check", ROOT_DIR],
+        [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
@@ -109,6 +151,8 @@ def main(argv):
         run_black,
         run_flake8,
         run_isort,
+        run_check_metadata,
+        run_update_manpages,
     )
     # 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.

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
 #

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",
         )

subcmds/diff.py

@@ -35,7 +35,6 @@ to the Unix 'patch' command.
         p.add_option(
             "-u",
             "--absolute",
-            dest="absolute",
             action="store_true",
             help="paths are relative to the repository root",
         )

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",

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

@@ -141,7 +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",
@@ -149,7 +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",
@@ -157,22 +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",
         )

subcmds/grep.py

@@ -120,7 +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",

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

@@ -127,6 +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):

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_true",
-            help="output manifest in JSON format (experimental)",
+            action="store_const",
+            dest="format",
+            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:
-                logger.warning("warning: --json is experimental!")
+            if output_format == OutputFormat.JSON:
                 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/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

@@ -51,7 +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",
         )

subcmds/status.py

@@ -82,7 +82,6 @@ the following meanings:
         p.add_option(
             "-o",
             "--orphans",
-            dest="orphans",
             action="store_true",
             help="include objects in working directory outside of repo "
             "projects",

subcmds/upload.py

@@ -267,7 +267,6 @@ 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(
@@ -281,7 +280,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
         p.add_option(
             "-c",
             "--current-branch",
-            dest="current_branch",
             action="store_true",
             help="upload current git branch",
         )
@@ -310,7 +308,6 @@ 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)",
         )
@@ -318,7 +315,6 @@ Gerrit Code Review:  https://www.gerritcodereview.com/
             "-w",
             "--wip",
             action="store_true",
-            dest="wip",
             default=False,
             help="upload as a work-in-progress change",
         )
@@ -628,6 +624,16 @@ 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 manifest.manifestProject.use_superproject:
+            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,
@@ -640,7 +646,7 @@ 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,
         )
 

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/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.

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.

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.

tests/test_manifest_xml.py

@@ -15,6 +15,7 @@
 """Unittests for the manifest_xml.py module."""
 
 import os
+from pathlib import Path
 import platform
 import re
 import tempfile
@@ -97,36 +98,34 @@ class ManifestParseTestCase(unittest.TestCase):
 
     def setUp(self):
         self.tempdirobj = tempfile.TemporaryDirectory(prefix="repo_tests")
-        self.tempdir = self.tempdirobj.name
-        self.repodir = os.path.join(self.tempdir, ".repo")
-        self.manifest_dir = os.path.join(self.repodir, "manifests")
-        self.manifest_file = os.path.join(
-            self.repodir, manifest_xml.MANIFEST_FILE_NAME
+        self.tempdir = Path(self.tempdirobj.name)
+        self.repodir = self.tempdir / ".repo"
+        self.manifest_dir = self.repodir / "manifests"
+        self.manifest_file = self.repodir / manifest_xml.MANIFEST_FILE_NAME
+        self.local_manifest_dir = (
+            self.repodir / manifest_xml.LOCAL_MANIFESTS_DIR_NAME
         )
-        self.local_manifest_dir = os.path.join(
-            self.repodir, manifest_xml.LOCAL_MANIFESTS_DIR_NAME
-        )
-        os.mkdir(self.repodir)
-        os.mkdir(self.manifest_dir)
+        self.repodir.mkdir()
+        self.manifest_dir.mkdir()
 
         # The manifest parsing really wants a git repo currently.
-        gitdir = os.path.join(self.repodir, "manifests.git")
-        os.mkdir(gitdir)
-        with open(os.path.join(gitdir, "config"), "w") as fp:
-            fp.write(
-                """[remote "origin"]
+        gitdir = self.repodir / "manifests.git"
+        gitdir.mkdir()
+        (gitdir / "config").write_text(
+            """[remote "origin"]
         url = https://localhost:0/manifest
 """
-            )
+        )
 
     def tearDown(self):
         self.tempdirobj.cleanup()
 
     def getXmlManifest(self, data):
         """Helper to initialize a manifest for testing."""
-        with open(self.manifest_file, "w", encoding="utf-8") as fp:
-            fp.write(data)
-        return manifest_xml.XmlManifest(self.repodir, self.manifest_file)
+        self.manifest_file.write_text(data, encoding="utf-8")
+        return manifest_xml.XmlManifest(
+            str(self.repodir), str(self.manifest_file)
+        )
 
     @staticmethod
     def encodeXmlAttr(attr):
@@ -243,12 +242,14 @@ class XmlManifestTests(ManifestParseTestCase):
 
     def test_link(self):
         """Verify Link handling with new names."""
-        manifest = manifest_xml.XmlManifest(self.repodir, self.manifest_file)
-        with open(os.path.join(self.manifest_dir, "foo.xml"), "w") as fp:
-            fp.write("<manifest></manifest>")
+        manifest = manifest_xml.XmlManifest(
+            str(self.repodir), str(self.manifest_file)
+        )
+        (self.manifest_dir / "foo.xml").write_text("<manifest></manifest>")
         manifest.Link("foo.xml")
-        with open(self.manifest_file) as fp:
-            self.assertIn('<include name="foo.xml" />', fp.read())
+        self.assertIn(
+            '<include name="foo.xml" />', self.manifest_file.read_text()
+        )
 
     def test_toxml_empty(self):
         """Verify the ToXml() helper."""
@@ -406,10 +407,9 @@ class IncludeElementTests(ManifestParseTestCase):
 
     def test_revision_default(self):
         """Check handling of revision attribute."""
-        root_m = os.path.join(self.manifest_dir, "root.xml")
-        with open(root_m, "w") as fp:
-            fp.write(
-                """
+        root_m = self.manifest_dir / "root.xml"
+        root_m.write_text(
+            """
 <manifest>
   <remote name="test-remote" fetch="http://localhost" />
   <default remote="test-remote" revision="refs/heads/main" />
@@ -418,17 +418,34 @@ class IncludeElementTests(ManifestParseTestCase):
   <project name="root-name2" path="root-path2" />
 </manifest>
 """
-            )
-        with open(os.path.join(self.manifest_dir, "stable.xml"), "w") as fp:
-            fp.write(
-                """
+        )
+        (self.manifest_dir / "stable.xml").write_text(
+            """
 <manifest>
+  <include name="man1.xml" />
+  <include name="man2.xml" revision="stable-branch2" />
   <project name="stable-name1" path="stable-path1" />
   <project name="stable-name2" path="stable-path2" revision="stable-branch2" />
 </manifest>
 """
-            )
-        include_m = manifest_xml.XmlManifest(self.repodir, root_m)
+        )
+        (self.manifest_dir / "man1.xml").write_text(
+            """
+<manifest>
+  <project name="man1-name1" />
+  <project name="man1-name2" revision="stable-branch3" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man2.xml").write_text(
+            """
+<manifest>
+  <project name="man2-name1" />
+  <project name="man2-name2" revision="stable-branch3" />
+</manifest>
+"""
+        )
+        include_m = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
         for proj in include_m.projects:
             if proj.name == "root-name1":
                 # Check include revision not set on root level proj.
@@ -442,12 +459,19 @@ class IncludeElementTests(ManifestParseTestCase):
             if proj.name == "stable-name2":
                 # Check stable proj revision can override include node.
                 self.assertEqual("stable-branch2", proj.revisionExpr)
+            if proj.name == "man1-name1":
+                self.assertEqual("stable-branch", proj.revisionExpr)
+            if proj.name == "man1-name2":
+                self.assertEqual("stable-branch3", proj.revisionExpr)
+            if proj.name == "man2-name1":
+                self.assertEqual("stable-branch2", proj.revisionExpr)
+            if proj.name == "man2-name2":
+                self.assertEqual("stable-branch3", proj.revisionExpr)
 
     def test_group_levels(self):
-        root_m = os.path.join(self.manifest_dir, "root.xml")
-        with open(root_m, "w") as fp:
-            fp.write(
-                """
+        root_m = self.manifest_dir / "root.xml"
+        root_m.write_text(
+            """
 <manifest>
   <remote name="test-remote" fetch="http://localhost" />
   <default remote="test-remote" revision="refs/heads/main" />
@@ -456,25 +480,23 @@ class IncludeElementTests(ManifestParseTestCase):
   <project name="root-name2" path="root-path2" groups="r2g1,r2g2" />
 </manifest>
 """
-            )
-        with open(os.path.join(self.manifest_dir, "level1.xml"), "w") as fp:
-            fp.write(
-                """
+        )
+        (self.manifest_dir / "level1.xml").write_text(
+            """
 <manifest>
   <include name="level2.xml" groups="level2-group" />
   <project name="level1-name1" path="level1-path1" />
 </manifest>
 """
-            )
-        with open(os.path.join(self.manifest_dir, "level2.xml"), "w") as fp:
-            fp.write(
-                """
+        )
+        (self.manifest_dir / "level2.xml").write_text(
+            """
 <manifest>
   <project name="level2-name1" path="level2-path1" groups="l2g1,l2g2" />
 </manifest>
 """
-            )
-        include_m = manifest_xml.XmlManifest(self.repodir, root_m)
+        )
+        include_m = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
         for proj in include_m.projects:
             if proj.name == "root-name1":
                 # Check include group not set on root level proj.
@@ -492,6 +514,41 @@ class IncludeElementTests(ManifestParseTestCase):
                 # Check level2 proj group not removed.
                 self.assertIn("l2g1", proj.groups)
 
+    def test_group_levels_with_extend_project(self):
+        root_m = self.manifest_dir / "root.xml"
+        root_m.write_text(
+            """
+<manifest>
+  <remote name="test-remote" fetch="http://localhost" />
+  <default remote="test-remote" revision="refs/heads/main" />
+  <include name="man1.xml" groups="top-group1" />
+  <include name="man2.xml" groups="top-group2" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man1.xml").write_text(
+            """
+<manifest>
+  <project name="project1" path="project1" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man2.xml").write_text(
+            """
+<manifest>
+  <extend-project name="project1" groups="eg1" />
+</manifest>
+"""
+        )
+        include_m = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
+        proj = include_m.projects[0]
+        # Check project has inherited group via project element.
+        self.assertIn("top-group1", proj.groups)
+        # Check project has inherited group via extend-project element.
+        self.assertIn("top-group2", proj.groups)
+        # Check project has set group via extend-project element.
+        self.assertIn("eg1", proj.groups)
+
     def test_allow_bad_name_from_user(self):
         """Check handling of bad name attribute from the user's input."""
 
@@ -510,9 +567,8 @@ class IncludeElementTests(ManifestParseTestCase):
             manifest.ToXml()
 
         # Setup target of the include.
-        target = os.path.join(self.tempdir, "target.xml")
-        with open(target, "w") as fp:
-            fp.write("<manifest></manifest>")
+        target = self.tempdir / "target.xml"
+        target.write_text("<manifest></manifest>")
 
         # Include with absolute path.
         parse(os.path.abspath(target))
@@ -526,12 +582,9 @@ class IncludeElementTests(ManifestParseTestCase):
         def parse(name):
             name = self.encodeXmlAttr(name)
             # Setup target of the include.
-            with open(
-                os.path.join(self.manifest_dir, "target.xml"),
-                "w",
-                encoding="utf-8",
-            ) as fp:
-                fp.write(f'<manifest><include name="{name}"/></manifest>')
+            (self.manifest_dir / "target.xml").write_text(
+                f'<manifest><include name="{name}"/></manifest>'
+            )
 
             manifest = self.getXmlManifest(
                 """
@@ -578,18 +631,18 @@ class ProjectElementTests(ManifestParseTestCase):
             manifest.projects[0].name: manifest.projects[0].groups,
             manifest.projects[1].name: manifest.projects[1].groups,
         }
-        self.assertCountEqual(
-            result["test-name"], ["name:test-name", "all", "path:test-path"]
+        self.assertEqual(
+            result["test-name"], {"name:test-name", "all", "path:test-path"}
         )
-        self.assertCountEqual(
+        self.assertEqual(
             result["extras"],
-            ["g1", "g2", "g1", "name:extras", "all", "path:path"],
+            {"g1", "g2", "name:extras", "all", "path:path"},
         )
         groupstr = "default,platform-" + platform.system().lower()
-        self.assertEqual(groupstr, manifest.GetGroupsStr())
+        self.assertEqual(groupstr, manifest.GetManifestGroupsStr())
         groupstr = "g1,g2,g1"
         manifest.manifestProject.config.SetString("manifest.groups", groupstr)
-        self.assertEqual(groupstr, manifest.GetGroupsStr())
+        self.assertEqual(groupstr, manifest.GetManifestGroupsStr())
 
     def test_set_revision_id(self):
         """Check setting of project's revisionId."""
@@ -1214,6 +1267,166 @@ class ExtendProjectElementTests(ManifestParseTestCase):
         self.assertEqual(len(manifest.projects), 1)
         self.assertEqual(manifest.projects[0].upstream, "bar")
 
+    def test_extend_project_copyfiles(self):
+        manifest = self.getXmlManifest(
+            """
+<manifest>
+  <remote name="default-remote" fetch="http://localhost" />
+  <default remote="default-remote" revision="refs/heads/main" />
+  <project name="myproject" />
+  <extend-project name="myproject">
+    <copyfile src="foo" dest="bar" />
+  </extend-project>
+</manifest>
+"""
+        )
+        self.assertEqual(list(manifest.projects[0].copyfiles)[0].src, "foo")
+        self.assertEqual(list(manifest.projects[0].copyfiles)[0].dest, "bar")
+        self.assertEqual(
+            sort_attributes(manifest.ToXml().toxml()),
+            '<?xml version="1.0" ?><manifest>'
+            '<remote fetch="http://localhost" name="default-remote"/>'
+            '<default remote="default-remote" revision="refs/heads/main"/>'
+            '<project name="myproject">'
+            '<copyfile dest="bar" src="foo"/>'
+            "</project>"
+            "</manifest>",
+        )
+
+    def test_extend_project_duplicate_copyfiles(self):
+        root_m = self.manifest_dir / "root.xml"
+        root_m.write_text(
+            """
+<manifest>
+  <remote name="test-remote" fetch="http://localhost" />
+  <default remote="test-remote" revision="refs/heads/main" />
+  <project name="myproject" />
+  <include name="man1.xml" />
+  <include name="man2.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man1.xml").write_text(
+            """
+<manifest>
+  <include name="common.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man2.xml").write_text(
+            """
+<manifest>
+  <include name="common.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "common.xml").write_text(
+            """
+<manifest>
+  <extend-project name="myproject">
+    <copyfile dest="bar" src="foo"/>
+  </extend-project>
+</manifest>
+"""
+        )
+        manifest = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
+        self.assertEqual(len(manifest.projects[0].copyfiles), 1)
+        self.assertEqual(list(manifest.projects[0].copyfiles)[0].src, "foo")
+        self.assertEqual(list(manifest.projects[0].copyfiles)[0].dest, "bar")
+
+    def test_extend_project_linkfiles(self):
+        manifest = self.getXmlManifest(
+            """
+<manifest>
+  <remote name="default-remote" fetch="http://localhost" />
+  <default remote="default-remote" revision="refs/heads/main" />
+  <project name="myproject" />
+  <extend-project name="myproject">
+    <linkfile src="foo" dest="bar" />
+  </extend-project>
+</manifest>
+"""
+        )
+        self.assertEqual(list(manifest.projects[0].linkfiles)[0].src, "foo")
+        self.assertEqual(list(manifest.projects[0].linkfiles)[0].dest, "bar")
+        self.assertEqual(
+            sort_attributes(manifest.ToXml().toxml()),
+            '<?xml version="1.0" ?><manifest>'
+            '<remote fetch="http://localhost" name="default-remote"/>'
+            '<default remote="default-remote" revision="refs/heads/main"/>'
+            '<project name="myproject">'
+            '<linkfile dest="bar" src="foo"/>'
+            "</project>"
+            "</manifest>",
+        )
+
+    def test_extend_project_duplicate_linkfiles(self):
+        root_m = self.manifest_dir / "root.xml"
+        root_m.write_text(
+            """
+<manifest>
+  <remote name="test-remote" fetch="http://localhost" />
+  <default remote="test-remote" revision="refs/heads/main" />
+  <project name="myproject" />
+  <include name="man1.xml" />
+  <include name="man2.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man1.xml").write_text(
+            """
+<manifest>
+  <include name="common.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "man2.xml").write_text(
+            """
+<manifest>
+  <include name="common.xml" />
+</manifest>
+"""
+        )
+        (self.manifest_dir / "common.xml").write_text(
+            """
+<manifest>
+  <extend-project name="myproject">
+    <linkfile dest="bar" src="foo"/>
+  </extend-project>
+</manifest>
+"""
+        )
+        manifest = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
+        self.assertEqual(len(manifest.projects[0].linkfiles), 1)
+        self.assertEqual(list(manifest.projects[0].linkfiles)[0].src, "foo")
+        self.assertEqual(list(manifest.projects[0].linkfiles)[0].dest, "bar")
+
+    def test_extend_project_annotations(self):
+        manifest = self.getXmlManifest(
+            """
+<manifest>
+  <remote name="default-remote" fetch="http://localhost" />
+  <default remote="default-remote" revision="refs/heads/main" />
+  <project name="myproject" />
+  <extend-project name="myproject">
+    <annotation name="foo" value="bar" />
+  </extend-project>
+</manifest>
+"""
+        )
+        self.assertEqual(manifest.projects[0].annotations[0].name, "foo")
+        self.assertEqual(manifest.projects[0].annotations[0].value, "bar")
+        self.assertEqual(
+            sort_attributes(manifest.ToXml().toxml()),
+            '<?xml version="1.0" ?><manifest>'
+            '<remote fetch="http://localhost" name="default-remote"/>'
+            '<default remote="default-remote" revision="refs/heads/main"/>'
+            '<project name="myproject">'
+            '<annotation name="foo" value="bar"/>'
+            "</project>"
+            "</manifest>",
+        )
+
 
 class NormalizeUrlTests(ManifestParseTestCase):
     """Tests for normalize_url() in manifest_xml.py"""

tests/test_platform_utils.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.

tests/test_repo_trace.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.

tests/test_ssh.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.

tests/test_subcmds.py

@@ -89,3 +89,49 @@ class AllCommands(unittest.TestCase):
                         msg=f"subcmds/{name}.py: {opt}: only use dashes in "
                         "options, not underscores",
                     )
+
+    def test_cli_option_dest(self):
+        """Block redundant dest= arguments."""
+
+        def _check_dest(opt):
+            """Check the dest= setting."""
+            # If the destination is not set, nothing to check.
+            # If long options are not set, then there's no implicit destination.
+            # If callback is used, then a destination might be needed because
+            # optparse cannot assume a value is always stored.
+            if opt.dest is None or not opt._long_opts or opt.callback:
+                return
+
+            long = opt._long_opts[0]
+            assert long.startswith("--")
+            # This matches optparse's behavior.
+            implicit_dest = long[2:].replace("-", "_")
+            if implicit_dest == opt.dest:
+                bad_opts.append((str(opt), opt.dest))
+
+        # Hook the option check list.
+        optparse.Option.CHECK_METHODS.insert(0, _check_dest)
+
+        # Gather all the bad options up front so people can see all bad options
+        # instead of failing at the first one.
+        all_bad_opts = {}
+        for name, cls in subcmds.all_commands.items():
+            bad_opts = all_bad_opts[name] = []
+            cmd = cls()
+            # Trigger construction of parser.
+            cmd.OptionParser
+
+        errmsg = None
+        for name, bad_opts in sorted(all_bad_opts.items()):
+            if bad_opts:
+                if not errmsg:
+                    errmsg = "Omit redundant dest= when defining options.\n"
+                errmsg += f"\nSubcommand {name} (subcmds/{name}.py):\n"
+                errmsg += "".join(
+                    f"    {opt}: dest='{dest}'\n" for opt, dest in bad_opts
+                )
+        if errmsg:
+            self.fail(errmsg)
+
+        # Make sure we aren't popping the wrong stuff.
+        assert optparse.Option.CHECK_METHODS.pop(0) is _check_dest

tests/test_subcmds_manifest.py

@@ -0,0 +1,156 @@
+# 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.
+
+"""Unittests for the subcmds/manifest.py module."""
+
+import json
+from pathlib import Path
+from unittest import mock
+
+import manifest_xml
+from subcmds import manifest
+
+
+_EXAMPLE_MANIFEST = """\
+<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+  <remote name="test-remote" fetch="http://localhost" />
+  <default remote="test-remote" revision="refs/heads/main" />
+  <project name="repohooks" path="src/repohooks"/>
+  <repo-hooks in-project="repohooks" enabled-list="a, b"/>
+</manifest>
+"""
+
+
+def _get_cmd(repodir: Path) -> manifest.Manifest:
+    """Instantiate a manifest command object to test."""
+    manifests_git = repodir / "manifests.git"
+    manifests_git.mkdir()
+    (manifests_git / "config").write_text(
+        """
+[remote "origin"]
+\turl = http://localhost/manifest
+"""
+    )
+    client = manifest_xml.RepoClient(repodir=str(repodir))
+    git_event_log = mock.MagicMock(ErrorEvent=mock.Mock(return_value=None))
+    return manifest.Manifest(
+        repodir=client.repodir,
+        client=client,
+        manifest=client.manifest,
+        outer_client=client,
+        outer_manifest=client.manifest,
+        git_event_log=git_event_log,
+    )
+
+
+def test_output_format_xml_file(tmp_path):
+    """Test writing XML to a file."""
+    path = tmp_path / "manifest.xml"
+    path.write_text(_EXAMPLE_MANIFEST)
+    outpath = tmp_path / "output.xml"
+    cmd = _get_cmd(tmp_path)
+    opt, args = cmd.OptionParser.parse_args(["--output-file", str(outpath)])
+    cmd.Execute(opt, args)
+    # Normalize the output a bit as we don't exactly care.
+    normalize = lambda data: "\n".join(
+        x.strip() for x in data.splitlines() if x.strip()
+    )
+    assert (
+        normalize(outpath.read_text())
+        == """<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+<remote name="test-remote" fetch="http://localhost"/>
+<default remote="test-remote" revision="refs/heads/main"/>
+<project name="repohooks" path="src/repohooks"/>
+<repo-hooks in-project="repohooks" enabled-list="a b"/>
+</manifest>"""
+    )
+
+
+def test_output_format_xml_stdout(tmp_path, capsys):
+    """Test writing XML to stdout."""
+    path = tmp_path / "manifest.xml"
+    path.write_text(_EXAMPLE_MANIFEST)
+    cmd = _get_cmd(tmp_path)
+    opt, args = cmd.OptionParser.parse_args(["--format", "xml"])
+    cmd.Execute(opt, args)
+    # Normalize the output a bit as we don't exactly care.
+    normalize = lambda data: "\n".join(
+        x.strip() for x in data.splitlines() if x.strip()
+    )
+    stdout = capsys.readouterr().out
+    assert (
+        normalize(stdout)
+        == """<?xml version="1.0" encoding="UTF-8"?>
+<manifest>
+<remote name="test-remote" fetch="http://localhost"/>
+<default remote="test-remote" revision="refs/heads/main"/>
+<project name="repohooks" path="src/repohooks"/>
+<repo-hooks in-project="repohooks" enabled-list="a b"/>
+</manifest>"""
+    )
+
+
+def test_output_format_json(tmp_path, capsys):
+    """Test writing JSON."""
+    path = tmp_path / "manifest.xml"
+    path.write_text(_EXAMPLE_MANIFEST)
+    cmd = _get_cmd(tmp_path)
+    opt, args = cmd.OptionParser.parse_args(["--format", "json"])
+    cmd.Execute(opt, args)
+    obj = json.loads(capsys.readouterr().out)
+    assert obj == {
+        "default": {"remote": "test-remote", "revision": "refs/heads/main"},
+        "project": [{"name": "repohooks", "path": "src/repohooks"}],
+        "remote": [{"fetch": "http://localhost", "name": "test-remote"}],
+        "repo-hooks": {"enabled-list": "a b", "in-project": "repohooks"},
+    }
+
+
+def test_output_format_json_pretty(tmp_path, capsys):
+    """Test writing pretty JSON."""
+    path = tmp_path / "manifest.xml"
+    path.write_text(_EXAMPLE_MANIFEST)
+    cmd = _get_cmd(tmp_path)
+    opt, args = cmd.OptionParser.parse_args(["--format", "json", "--pretty"])
+    cmd.Execute(opt, args)
+    stdout = capsys.readouterr().out
+    assert (
+        stdout
+        == """\
+{
+  "default": {
+    "remote": "test-remote",
+    "revision": "refs/heads/main"
+  },
+  "project": [
+    {
+      "name": "repohooks",
+      "path": "src/repohooks"
+    }
+  ],
+  "remote": [
+    {
+      "fetch": "http://localhost",
+      "name": "test-remote"
+    }
+  ],
+  "repo-hooks": {
+    "enabled-list": "a b",
+    "in-project": "repohooks"
+  }
+}
+"""
+    )

tests/test_subcmds_sync.py

@@ -305,8 +305,21 @@ class LocalSyncState(unittest.TestCase):
 
 
 class FakeProject:
-    def __init__(self, relpath):
+    def __init__(self, relpath, name=None, objdir=None):
         self.relpath = relpath
+        self.name = name or relpath
+        self.objdir = objdir or relpath
+        self.worktree = relpath
+
+        self.use_git_worktrees = False
+        self.UseAlternates = False
+        self.manifest = mock.MagicMock()
+        self.manifest.GetProjectsWithName.return_value = [self]
+        self.config = mock.MagicMock()
+        self.EnableRepositoryExtension = mock.MagicMock()
+
+    def RelPath(self, local=None):
+        return self.relpath
 
     def __str__(self):
         return f"project: {self.relpath}"
@@ -513,3 +526,418 @@ class SyncCommand(unittest.TestCase):
             self.cmd.Execute(self.opt, [])
             self.assertIn(self.sync_local_half_error, e.aggregate_errors)
             self.assertIn(self.sync_network_half_error, e.aggregate_errors)
+
+
+class SyncUpdateRepoProject(unittest.TestCase):
+    """Tests for Sync._UpdateRepoProject."""
+
+    def setUp(self):
+        """Common setup."""
+        self.repodir = tempfile.mkdtemp(".repo")
+        self.manifest = manifest = mock.MagicMock(repodir=self.repodir)
+        # Create a repoProject with a mock Sync_NetworkHalf.
+        repoProject = mock.MagicMock(name="repo")
+        repoProject.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(True, None)
+        )
+        manifest.repoProject = repoProject
+        manifest.IsArchive = False
+        manifest.CloneFilter = None
+        manifest.PartialCloneExclude = None
+        manifest.CloneFilterForDepth = None
+
+        git_event_log = mock.MagicMock(ErrorEvent=mock.Mock(return_value=None))
+        self.cmd = sync.Sync(manifest=manifest, git_event_log=git_event_log)
+
+        opt, _ = self.cmd.OptionParser.parse_args([])
+        opt.local_only = False
+        opt.repo_verify = False
+        opt.verbose = False
+        opt.quiet = True
+        opt.force_sync = False
+        opt.clone_bundle = False
+        opt.tags = False
+        opt.optimized_fetch = False
+        opt.retry_fetches = 0
+        opt.prune = False
+        self.opt = opt
+        self.errors = []
+
+        mock.patch.object(sync.Sync, "_GetCurrentBranchOnly").start()
+
+    def tearDown(self):
+        shutil.rmtree(self.repodir)
+        mock.patch.stopall()
+
+    def test_fetches_when_stale(self):
+        """Test it fetches when the repo project is stale."""
+        self.manifest.repoProject.LastFetch = time.time() - (
+            sync._ONE_DAY_S + 1
+        )
+
+        with mock.patch.object(sync, "_PostRepoFetch") as mock_post_fetch:
+            self.cmd._UpdateRepoProject(self.opt, self.manifest, self.errors)
+            self.manifest.repoProject.Sync_NetworkHalf.assert_called_once()
+            mock_post_fetch.assert_called_once()
+            self.assertEqual(self.errors, [])
+
+    def test_skips_when_fresh(self):
+        """Test it skips fetch when repo project is fresh."""
+        self.manifest.repoProject.LastFetch = time.time()
+
+        with mock.patch.object(sync, "_PostRepoFetch") as mock_post_fetch:
+            self.cmd._UpdateRepoProject(self.opt, self.manifest, self.errors)
+            self.manifest.repoProject.Sync_NetworkHalf.assert_not_called()
+            mock_post_fetch.assert_not_called()
+
+    def test_skips_local_only(self):
+        """Test it does nothing with --local-only."""
+        self.opt.local_only = True
+        self.manifest.repoProject.LastFetch = time.time() - (
+            sync._ONE_DAY_S + 1
+        )
+
+        with mock.patch.object(sync, "_PostRepoFetch") as mock_post_fetch:
+            self.cmd._UpdateRepoProject(self.opt, self.manifest, self.errors)
+            self.manifest.repoProject.Sync_NetworkHalf.assert_not_called()
+            mock_post_fetch.assert_not_called()
+
+    def test_post_repo_fetch_skipped_on_env_var(self):
+        """Test _PostRepoFetch is skipped when REPO_SKIP_SELF_UPDATE is set."""
+        self.manifest.repoProject.LastFetch = time.time()
+
+        with mock.patch.dict(os.environ, {"REPO_SKIP_SELF_UPDATE": "1"}):
+            with mock.patch.object(sync, "_PostRepoFetch") as mock_post_fetch:
+                self.cmd._UpdateRepoProject(
+                    self.opt, self.manifest, self.errors
+                )
+                mock_post_fetch.assert_not_called()
+
+    def test_fetch_failure_is_handled(self):
+        """Test that a fetch failure is recorded and doesn't crash."""
+        self.manifest.repoProject.LastFetch = time.time() - (
+            sync._ONE_DAY_S + 1
+        )
+        fetch_error = GitError("Fetch failed")
+        self.manifest.repoProject.Sync_NetworkHalf.return_value = (
+            SyncNetworkHalfResult(False, fetch_error)
+        )
+
+        with mock.patch.object(sync, "_PostRepoFetch") as mock_post_fetch:
+            self.cmd._UpdateRepoProject(self.opt, self.manifest, self.errors)
+            self.manifest.repoProject.Sync_NetworkHalf.assert_called_once()
+            mock_post_fetch.assert_not_called()
+            self.assertEqual(self.errors, [fetch_error])
+
+
+class InterleavedSyncTest(unittest.TestCase):
+    """Tests for interleaved sync."""
+
+    def setUp(self):
+        """Set up a sync command with mocks."""
+        self.repodir = tempfile.mkdtemp(".repo")
+        self.manifest = mock.MagicMock(repodir=self.repodir)
+        self.manifest.repoProject.LastFetch = time.time()
+        self.manifest.repoProject.worktree = self.repodir
+        self.manifest.manifestProject.worktree = self.repodir
+        self.manifest.IsArchive = False
+        self.manifest.CloneBundle = False
+        self.manifest.default.sync_j = 1
+
+        self.outer_client = mock.MagicMock()
+        self.outer_client.manifest.IsArchive = False
+        self.cmd = sync.Sync(
+            manifest=self.manifest, outer_client=self.outer_client
+        )
+        self.cmd.outer_manifest = self.manifest
+
+        # Mock projects.
+        self.projA = FakeProject("projA", objdir="objA")
+        self.projB = FakeProject("projB", objdir="objB")
+        self.projA_sub = FakeProject(
+            "projA/sub", name="projA_sub", objdir="objA_sub"
+        )
+        self.projC = FakeProject("projC", objdir="objC")
+
+        # Mock methods that are not part of the core interleaved sync logic.
+        mock.patch.object(self.cmd, "_UpdateAllManifestProjects").start()
+        mock.patch.object(self.cmd, "_UpdateProjectsRevisionId").start()
+        mock.patch.object(self.cmd, "_ValidateOptionsWithManifest").start()
+        mock.patch.object(sync, "_PostRepoUpgrade").start()
+        mock.patch.object(sync, "_PostRepoFetch").start()
+
+        # Mock parallel context for worker tests.
+        self.parallel_context_patcher = mock.patch(
+            "subcmds.sync.Sync.get_parallel_context"
+        )
+        self.mock_get_parallel_context = self.parallel_context_patcher.start()
+        self.sync_dict = {}
+        self.mock_context = {
+            "projects": [],
+            "sync_dict": self.sync_dict,
+        }
+        self.mock_get_parallel_context.return_value = self.mock_context
+
+        # Mock _GetCurrentBranchOnly for worker tests.
+        mock.patch.object(sync.Sync, "_GetCurrentBranchOnly").start()
+
+        self.cmd._fetch_times = mock.Mock()
+        self.cmd._local_sync_state = mock.Mock()
+
+    def tearDown(self):
+        """Clean up resources."""
+        shutil.rmtree(self.repodir)
+        mock.patch.stopall()
+
+    def test_interleaved_fail_fast(self):
+        """Test that --fail-fast is respected in interleaved mode."""
+        opt, args = self.cmd.OptionParser.parse_args(
+            ["--interleaved", "--fail-fast", "-j2"]
+        )
+        opt.quiet = True
+
+        # With projA/sub, _SafeCheckoutOrder creates two batches:
+        # 1. [projA, projB]
+        # 2. [projA/sub]
+        # We want to fail on the first batch and ensure the second isn't run.
+        all_projects = [self.projA, self.projB, self.projA_sub]
+        mock.patch.object(
+            self.cmd, "GetProjects", return_value=all_projects
+        ).start()
+
+        # Mock ExecuteInParallel to simulate a failed run on the first batch of
+        # projects.
+        execute_mock = mock.patch.object(
+            self.cmd, "ExecuteInParallel", return_value=False
+        ).start()
+
+        with self.assertRaises(sync.SyncFailFastError):
+            self.cmd._SyncInterleaved(
+                opt,
+                args,
+                [],
+                self.manifest,
+                self.manifest.manifestProject,
+                all_projects,
+                {},
+            )
+
+        execute_mock.assert_called_once()
+
+    def test_interleaved_shared_objdir_serial(self):
+        """Test that projects with shared objdir are processed serially."""
+        opt, args = self.cmd.OptionParser.parse_args(["--interleaved", "-j4"])
+        opt.quiet = True
+
+        # Setup projects with a shared objdir.
+        self.projA.objdir = "common_objdir"
+        self.projC.objdir = "common_objdir"
+
+        all_projects = [self.projA, self.projB, self.projC]
+        mock.patch.object(
+            self.cmd, "GetProjects", return_value=all_projects
+        ).start()
+
+        def execute_side_effect(jobs, target, work_items, **kwargs):
+            # The callback is a partial object. The first arg is the set we
+            # need to update to avoid the stall detection.
+            synced_relpaths_set = kwargs["callback"].args[0]
+            projects_in_pass = self.cmd.get_parallel_context()["projects"]
+            for item in work_items:
+                for project_idx in item:
+                    synced_relpaths_set.add(
+                        projects_in_pass[project_idx].relpath
+                    )
+            return True
+
+        execute_mock = mock.patch.object(
+            self.cmd, "ExecuteInParallel", side_effect=execute_side_effect
+        ).start()
+
+        self.cmd._SyncInterleaved(
+            opt,
+            args,
+            [],
+            self.manifest,
+            self.manifest.manifestProject,
+            all_projects,
+            {},
+        )
+
+        execute_mock.assert_called_once()
+        jobs_arg, _, work_items = execute_mock.call_args.args
+        self.assertEqual(jobs_arg, 2)
+        work_items_sets = {frozenset(item) for item in work_items}
+        expected_sets = {frozenset([0, 2]), frozenset([1])}
+        self.assertEqual(work_items_sets, expected_sets)
+
+    def _get_opts(self, args=None):
+        """Helper to get default options for worker tests."""
+        if args is None:
+            args = ["--interleaved"]
+        opt, _ = self.cmd.OptionParser.parse_args(args)
+        # Set defaults for options used by the worker.
+        opt.quiet = True
+        opt.verbose = False
+        opt.force_sync = False
+        opt.clone_bundle = False
+        opt.tags = False
+        opt.optimized_fetch = False
+        opt.retry_fetches = 0
+        opt.prune = False
+        opt.detach_head = False
+        opt.force_checkout = False
+        opt.rebase = False
+        return opt
+
+    def test_worker_successful_sync(self):
+        """Test _SyncProjectList with a successful fetch and checkout."""
+        opt = self._get_opts()
+        project = self.projA
+        project.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(error=None, remote_fetched=True)
+        )
+        project.Sync_LocalHalf = mock.Mock()
+        project.manifest.manifestProject.config = mock.MagicMock()
+        self.mock_context["projects"] = [project]
+
+        with mock.patch("subcmds.sync.SyncBuffer") as mock_sync_buffer:
+            mock_sync_buf_instance = mock.MagicMock()
+            mock_sync_buf_instance.Finish.return_value = True
+            mock_sync_buf_instance.errors = []
+            mock_sync_buffer.return_value = mock_sync_buf_instance
+
+            result_obj = self.cmd._SyncProjectList(opt, [0])
+
+            self.assertEqual(len(result_obj.results), 1)
+            result = result_obj.results[0]
+            self.assertTrue(result.fetch_success)
+            self.assertTrue(result.checkout_success)
+            self.assertEqual(result.fetch_errors, [])
+            self.assertEqual(result.checkout_errors, [])
+            project.Sync_NetworkHalf.assert_called_once()
+            project.Sync_LocalHalf.assert_called_once()
+
+    def test_worker_fetch_fails(self):
+        """Test _SyncProjectList with a failed fetch."""
+        opt = self._get_opts()
+        project = self.projA
+        fetch_error = GitError("Fetch failed")
+        project.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(
+                error=fetch_error, remote_fetched=False
+            )
+        )
+        project.Sync_LocalHalf = mock.Mock()
+        self.mock_context["projects"] = [project]
+
+        result_obj = self.cmd._SyncProjectList(opt, [0])
+        result = result_obj.results[0]
+
+        self.assertFalse(result.fetch_success)
+        self.assertFalse(result.checkout_success)
+        self.assertEqual(result.fetch_errors, [fetch_error])
+        self.assertEqual(result.checkout_errors, [])
+        project.Sync_NetworkHalf.assert_called_once()
+        project.Sync_LocalHalf.assert_not_called()
+
+    def test_worker_no_worktree(self):
+        """Test interleaved sync does not checkout with no worktree."""
+        opt = self._get_opts()
+        project = self.projA
+        project.worktree = None
+        project.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(error=None, remote_fetched=True)
+        )
+        project.Sync_LocalHalf = mock.Mock()
+        self.mock_context["projects"] = [project]
+
+        result_obj = self.cmd._SyncProjectList(opt, [0])
+        result = result_obj.results[0]
+
+        self.assertTrue(result.fetch_success)
+        self.assertTrue(result.checkout_success)
+        project.Sync_NetworkHalf.assert_called_once()
+        project.Sync_LocalHalf.assert_not_called()
+
+    def test_worker_fetch_fails_exception(self):
+        """Test _SyncProjectList with an exception during fetch."""
+        opt = self._get_opts()
+        project = self.projA
+        fetch_error = GitError("Fetch failed")
+        project.Sync_NetworkHalf = mock.Mock(side_effect=fetch_error)
+        project.Sync_LocalHalf = mock.Mock()
+        self.mock_context["projects"] = [project]
+
+        result_obj = self.cmd._SyncProjectList(opt, [0])
+        result = result_obj.results[0]
+
+        self.assertFalse(result.fetch_success)
+        self.assertFalse(result.checkout_success)
+        self.assertEqual(result.fetch_errors, [fetch_error])
+        project.Sync_NetworkHalf.assert_called_once()
+        project.Sync_LocalHalf.assert_not_called()
+
+    def test_worker_checkout_fails(self):
+        """Test _SyncProjectList with an exception during checkout."""
+        opt = self._get_opts()
+        project = self.projA
+        project.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(error=None, remote_fetched=True)
+        )
+        checkout_error = GitError("Checkout failed")
+        project.Sync_LocalHalf = mock.Mock(side_effect=checkout_error)
+        project.manifest.manifestProject.config = mock.MagicMock()
+        self.mock_context["projects"] = [project]
+
+        with mock.patch("subcmds.sync.SyncBuffer"):
+            result_obj = self.cmd._SyncProjectList(opt, [0])
+            result = result_obj.results[0]
+
+            self.assertTrue(result.fetch_success)
+            self.assertFalse(result.checkout_success)
+            self.assertEqual(result.fetch_errors, [])
+            self.assertEqual(result.checkout_errors, [checkout_error])
+            project.Sync_NetworkHalf.assert_called_once()
+            project.Sync_LocalHalf.assert_called_once()
+
+    def test_worker_local_only(self):
+        """Test _SyncProjectList with --local-only."""
+        opt = self._get_opts(["--interleaved", "--local-only"])
+        project = self.projA
+        project.Sync_NetworkHalf = mock.Mock()
+        project.Sync_LocalHalf = mock.Mock()
+        project.manifest.manifestProject.config = mock.MagicMock()
+        self.mock_context["projects"] = [project]
+
+        with mock.patch("subcmds.sync.SyncBuffer") as mock_sync_buffer:
+            mock_sync_buf_instance = mock.MagicMock()
+            mock_sync_buf_instance.Finish.return_value = True
+            mock_sync_buf_instance.errors = []
+            mock_sync_buffer.return_value = mock_sync_buf_instance
+
+            result_obj = self.cmd._SyncProjectList(opt, [0])
+            result = result_obj.results[0]
+
+            self.assertTrue(result.fetch_success)
+            self.assertTrue(result.checkout_success)
+            project.Sync_NetworkHalf.assert_not_called()
+            project.Sync_LocalHalf.assert_called_once()
+
+    def test_worker_network_only(self):
+        """Test _SyncProjectList with --network-only."""
+        opt = self._get_opts(["--interleaved", "--network-only"])
+        project = self.projA
+        project.Sync_NetworkHalf = mock.Mock(
+            return_value=SyncNetworkHalfResult(error=None, remote_fetched=True)
+        )
+        project.Sync_LocalHalf = mock.Mock()
+        self.mock_context["projects"] = [project]
+
+        result_obj = self.cmd._SyncProjectList(opt, [0])
+        result = result_obj.results[0]
+
+        self.assertTrue(result.fetch_success)
+        self.assertTrue(result.checkout_success)
+        project.Sync_NetworkHalf.assert_called_once()
+        project.Sync_LocalHalf.assert_not_called()

tests/test_subcmds_wipe.py

@@ -0,0 +1,263 @@
+# 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 shutil
+from unittest import mock
+
+import pytest
+
+import project
+from subcmds import wipe
+
+
+def _create_mock_project(tempdir, name, objdir_path=None, has_changes=False):
+    """Creates a mock project with necessary attributes and directories."""
+    worktree = os.path.join(tempdir, name)
+    gitdir = os.path.join(tempdir, ".repo/projects", f"{name}.git")
+    if objdir_path:
+        objdir = objdir_path
+    else:
+        objdir = os.path.join(tempdir, ".repo/project-objects", f"{name}.git")
+
+    os.makedirs(worktree, exist_ok=True)
+    os.makedirs(gitdir, exist_ok=True)
+    os.makedirs(objdir, exist_ok=True)
+
+    proj = project.Project(
+        manifest=mock.MagicMock(),
+        name=name,
+        remote=mock.MagicMock(),
+        gitdir=gitdir,
+        objdir=objdir,
+        worktree=worktree,
+        relpath=name,
+        revisionExpr="main",
+        revisionId="abcd",
+    )
+
+    proj.HasChanges = mock.MagicMock(return_value=has_changes)
+
+    def side_effect_delete_worktree(force=False, verbose=False):
+        if os.path.exists(proj.worktree):
+            shutil.rmtree(proj.worktree)
+        if os.path.exists(proj.gitdir):
+            shutil.rmtree(proj.gitdir)
+        return True
+
+    proj.DeleteWorktree = mock.MagicMock(
+        side_effect=side_effect_delete_worktree
+    )
+
+    return proj
+
+
+def _run_wipe(all_projects, projects_to_wipe_names, options=None):
+    """Helper to run the Wipe command with mocked projects."""
+    cmd = wipe.Wipe()
+    cmd.manifest = mock.MagicMock()
+
+    def get_projects_mock(projects, all_manifests=False, **kwargs):
+        if projects is None:
+            return all_projects
+        names_to_find = set(projects)
+        return [p for p in all_projects if p.name in names_to_find]
+
+    cmd.GetProjects = mock.MagicMock(side_effect=get_projects_mock)
+
+    if options is None:
+        options = []
+
+    opts = cmd.OptionParser.parse_args(options + projects_to_wipe_names)[0]
+    cmd.CommonValidateOptions(opts, projects_to_wipe_names)
+    cmd.ValidateOptions(opts, projects_to_wipe_names)
+    cmd.Execute(opts, projects_to_wipe_names)
+
+
+def test_wipe_single_unshared_project(tmp_path):
+    """Test wiping a single project that is not shared."""
+    p1 = _create_mock_project(str(tmp_path), "project/one")
+    _run_wipe([p1], ["project/one"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert not os.path.exists(p1.objdir)
+
+
+def test_wipe_multiple_unshared_projects(tmp_path):
+    """Test wiping multiple projects that are not shared."""
+    p1 = _create_mock_project(str(tmp_path), "project/one")
+    p2 = _create_mock_project(str(tmp_path), "project/two")
+    _run_wipe([p1, p2], ["project/one", "project/two"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert not os.path.exists(p1.objdir)
+    assert not os.path.exists(p2.worktree)
+    assert not os.path.exists(p2.gitdir)
+    assert not os.path.exists(p2.objdir)
+
+
+def test_wipe_shared_project_no_force_raises_error(tmp_path):
+    """Test that wiping a shared project without --force raises an error."""
+    shared_objdir = os.path.join(
+        str(tmp_path), ".repo/project-objects", "shared.git"
+    )
+    p1 = _create_mock_project(
+        str(tmp_path), "project/one", objdir_path=shared_objdir
+    )
+    p2 = _create_mock_project(
+        str(tmp_path), "project/two", objdir_path=shared_objdir
+    )
+
+    with pytest.raises(wipe.Error) as e:
+        _run_wipe([p1, p2], ["project/one"])
+
+    assert "shared object directories" in str(e.value)
+    assert "project/one" in str(e.value)
+    assert "project/two" in str(e.value)
+
+    assert os.path.exists(p1.worktree)
+    assert os.path.exists(p1.gitdir)
+    assert os.path.exists(p2.worktree)
+    assert os.path.exists(p2.gitdir)
+    assert os.path.exists(shared_objdir)
+
+
+def test_wipe_shared_project_with_force(tmp_path):
+    """Test wiping a shared project with --force."""
+    shared_objdir = os.path.join(
+        str(tmp_path), ".repo/project-objects", "shared.git"
+    )
+    p1 = _create_mock_project(
+        str(tmp_path), "project/one", objdir_path=shared_objdir
+    )
+    p2 = _create_mock_project(
+        str(tmp_path), "project/two", objdir_path=shared_objdir
+    )
+
+    _run_wipe([p1, p2], ["project/one"], options=["--force"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert os.path.exists(shared_objdir)
+    assert os.path.exists(p2.worktree)
+    assert os.path.exists(p2.gitdir)
+
+
+def test_wipe_all_sharing_projects(tmp_path):
+    """Test wiping all projects that share an object directory."""
+    shared_objdir = os.path.join(
+        str(tmp_path), ".repo/project-objects", "shared.git"
+    )
+    p1 = _create_mock_project(
+        str(tmp_path), "project/one", objdir_path=shared_objdir
+    )
+    p2 = _create_mock_project(
+        str(tmp_path), "project/two", objdir_path=shared_objdir
+    )
+
+    _run_wipe([p1, p2], ["project/one", "project/two"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert not os.path.exists(p2.worktree)
+    assert not os.path.exists(p2.gitdir)
+    assert not os.path.exists(shared_objdir)
+
+
+def test_wipe_with_uncommitted_changes_raises_error(tmp_path):
+    """Test wiping a project with uncommitted changes raises an error."""
+    p1 = _create_mock_project(str(tmp_path), "project/one", has_changes=True)
+
+    with pytest.raises(wipe.Error) as e:
+        _run_wipe([p1], ["project/one"])
+
+    assert "uncommitted changes" in str(e.value)
+    assert "project/one" in str(e.value)
+
+    assert os.path.exists(p1.worktree)
+    assert os.path.exists(p1.gitdir)
+    assert os.path.exists(p1.objdir)
+
+
+def test_wipe_with_uncommitted_changes_with_force(tmp_path):
+    """Test wiping a project with uncommitted changes with --force."""
+    p1 = _create_mock_project(str(tmp_path), "project/one", has_changes=True)
+    _run_wipe([p1], ["project/one"], options=["--force"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert not os.path.exists(p1.objdir)
+
+
+def test_wipe_uncommitted_and_shared_raises_combined_error(tmp_path):
+    """Test that uncommitted and shared projects raise a combined error."""
+    shared_objdir = os.path.join(
+        str(tmp_path), ".repo/project-objects", "shared.git"
+    )
+    p1 = _create_mock_project(
+        str(tmp_path),
+        "project/one",
+        objdir_path=shared_objdir,
+        has_changes=True,
+    )
+    p2 = _create_mock_project(
+        str(tmp_path), "project/two", objdir_path=shared_objdir
+    )
+
+    with pytest.raises(wipe.Error) as e:
+        _run_wipe([p1, p2], ["project/one"])
+
+    assert "uncommitted changes" in str(e.value)
+    assert "shared object directories" in str(e.value)
+    assert "project/one" in str(e.value)
+    assert "project/two" in str(e.value)
+
+    assert os.path.exists(p1.worktree)
+    assert os.path.exists(p1.gitdir)
+    assert os.path.exists(p2.worktree)
+    assert os.path.exists(p2.gitdir)
+    assert os.path.exists(shared_objdir)
+
+
+def test_wipe_shared_project_with_force_shared(tmp_path):
+    """Test wiping a shared project with --force-shared."""
+    shared_objdir = os.path.join(
+        str(tmp_path), ".repo/project-objects", "shared.git"
+    )
+    p1 = _create_mock_project(
+        str(tmp_path), "project/one", objdir_path=shared_objdir
+    )
+    p2 = _create_mock_project(
+        str(tmp_path), "project/two", objdir_path=shared_objdir
+    )
+
+    _run_wipe([p1, p2], ["project/one"], options=["--force-shared"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert os.path.exists(shared_objdir)
+    assert os.path.exists(p2.worktree)
+    assert os.path.exists(p2.gitdir)
+
+
+def test_wipe_with_uncommitted_changes_with_force_uncommitted(tmp_path):
+    """Test wiping uncommitted changes with --force-uncommitted."""
+    p1 = _create_mock_project(str(tmp_path), "project/one", has_changes=True)
+    _run_wipe([p1], ["project/one"], options=["--force-uncommitted"])
+
+    assert not os.path.exists(p1.worktree)
+    assert not os.path.exists(p1.gitdir)
+    assert not os.path.exists(p1.objdir)

tests/test_update_manpages.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.

tox.ini

@@ -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.