docs: release: remove stale Project References table

The table of git/python/ssh/distro versions hasn't been kept up to date
and duplicates information maintained upstream by the distros and
projects themselves.  Drop it, and point the places that referenced it
(python-support.md & requirements.json) at the Ubuntu & Debian release
pages instead.

Bug: 575551885
Change-Id: Id1cb2225b3852273ca717fc7a443449fb2fd006e
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/649983
Reviewed-by: Gavin Mak <gavinmak@google.com>
Tested-by: Brian Gan <brgan@google.com>
Commit-Queue: Brian Gan <brgan@google.com>
This commit is contained in:
Brian Gan authored and gerrit-scoped@luci-project-accounts.iam.gserviceaccount.com committed 2026-10-27 10:39:40 -07:00
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@@ -45,10 +45,10 @@ that are critical to us.
That said, let's assume we need functionality that only exists in Python 3.7.
How do we decide when it's acceptable to drop Python 3.6?
1. Review the [Project References](./release-process.md#project-references) to
see what major distros are using the previous version of Python, and when
they go EOL. Generally we care about Ubuntu LTS & current/previous Debian
stable versions.
1. Review what major distros are using the previous version of Python, and
when they go EOL (e.g. via [Ubuntu releases] & [Debian releases]).
Generally we care about Ubuntu LTS & current/previous Debian stable
versions.
* If they're all EOL already, then go for it, drop support.
* If they aren't EOL, start a thread on [repo-discuss] to see how the user
base feels about the proposal.
@@ -88,5 +88,7 @@ $ repo-2.32 init --repo-rev=repo-1 ...
[repo-discuss]: https://groups.google.com/forum/#!forum/repo-discuss
[Debian releases]: https://wiki.debian.org/DebianReleases#Versions_of_Debian_stable
[repo hooks]: ./repo-hooks.md
[repo launcher]: ../repo
[Ubuntu releases]: https://wiki.ubuntu.com/Releases
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@@ -194,163 +194,7 @@ You can create a short changelog using the command:
$ git log --format="%h (%aN) %s" --no-merges origin/stable..main
```
## Project References
Here's a table showing the relationship of major tools, their EOL dates, and
their status in Ubuntu & Debian.
Those distros tend to be good indicators of how long we need to support things.
Things in bold indicate stuff to take note of, but does not guarantee that we
still support them.
Things in italics are things we used to care about but probably don't anymore.
| Date | EOL | [Git][rel-g] | [Python][rel-p] | [SSH][rel-o] | [Ubuntu][rel-u] / [Debian][rel-d] | Git | Python | SSH |
|:--------:|:------------:|:------------:|:---------------:|:------------:|-----------------------------------|:---:|:------:|:---:|
| Apr 2008 | | | | 5.0 |
| Jun 2008 | | | | 5.1 |
| Oct 2008 | *Oct 2013* | | 2.6.0 | | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
| Dec 2008 | *Feb 2009* | | 3.0.0 |
| Feb 2009 | | | | 5.2 |
| Feb 2009 | *Mar 2012* | | | | Debian 5 Lenny | 1.5.6.5 | 2.5.2 |
| Jun 2009 | *Jun 2016* | | 3.1.0 | | *10.04 Lucid* - 10.10 Maverick / *Squeeze* |
| Sep 2009 | | | | 5.3 | *10.04 Lucid* |
| Feb 2010 | *Oct 2012* | 1.7.0 | | | *10.04 Lucid* - *12.04 Precise* - 12.10 Quantal |
| Mar 2010 | | | | 5.4 |
| Apr 2010 | | | | 5.5 | 10.10 Maverick |
| Apr 2010 | *Apr 2015* | | | | *10.04 Lucid* | 1.7.0.4 | 2.6.5 3.1.2 | 5.3 |
| Jul 2010 | *Dec 2019* | | *2.7.0* | | 11.04 Natty - *<current>* |
| Aug 2010 | | | | 5.6 |
| Oct 2010 | | | | | 10.10 Maverick | 1.7.1 | 2.6.6 3.1.3 | 5.5 |
| Jan 2011 | | | | 5.7 |
| Feb 2011 | | | | 5.8 | 11.04 Natty |
| Feb 2011 | *Feb 2016* | | | | Debian 6 Squeeze | 1.7.2.5 | 2.6.6 3.1.3 |
| Apr 2011 | | | | | 11.04 Natty | 1.7.4 | 2.7.1 3.2.0 | 5.8 |
| Sep 2011 | | | | 5.9 | *12.04 Precise* |
| Oct 2011 | *Feb 2016* | | 3.2.0 | | 11.04 Natty - 12.10 Quantal |
| Oct 2011 | | | | | 11.10 Ocelot | 1.7.5.4 | 2.7.2 3.2.2 | 5.8 |
| Apr 2012 | | | | 6.0 | 12.10 Quantal |
| Apr 2012 | *Apr 2019* | | | | *12.04 Precise* | 1.7.9.5 | 2.7.3 3.2.3 | 5.9 |
| Aug 2012 | | | | 6.1 | 13.04 Raring |
| Sep 2012 | *Sep 2017* | | 3.3.0 | | 13.04 Raring - 13.10 Saucy |
| Oct 2012 | *Dec 2014* | 1.8.0 | | | 13.04 Raring - 13.10 Saucy |
| Oct 2012 | | | | | 12.10 Quantal | 1.7.10.4 | 2.7.3 3.2.3 | 6.0 |
| Mar 2013 | | | | 6.2 | 13.10 Saucy |
| Apr 2013 | | | | | 13.04 Raring | 1.8.1.2 | 2.7.4 3.3.1 | 6.1 |
| May 2013 | *May 2018* | | | | Debian 7 Wheezy | 1.7.10.4 | 2.7.3 3.2.3 |
| Sep 2013 | | | | 6.3 |
| Oct 2013 | | | | | 13.10 Saucy | 1.8.3.2 | 2.7.5 3.3.2 | 6.2 |
| Nov 2013 | | | | 6.4 |
| Jan 2014 | | | | 6.5 |
| Feb 2014 | *Dec 2014* | **1.9.0** | | | *14.04 Trusty* |
| Mar 2014 | *Mar 2019* | | *3.4.0* | | *14.04 Trusty* - 15.10 Wily / *Jessie* |
| Mar 2014 | | | | 6.6 | *14.04 Trusty* - 14.10 Utopic |
| Apr 2014 | *Apr 2024* | | | | *14.04 Trusty* | 1.9.1 | 2.7.5 3.4.0 | 6.6 |
| May 2014 | *Dec 2014* | 2.0.0 |
| Aug 2014 | *Dec 2014* | *2.1.0* | | | 14.10 Utopic - 15.04 Vivid / *Jessie* |
| Oct 2014 | | | | 6.7 | 15.04 Vivid |
| Oct 2014 | | | | | 14.10 Utopic | 2.1.0 | 2.7.8 3.4.2 | 6.6 |
| Nov 2014 | *Sep 2015* | 2.2.0 |
| Feb 2015 | *Sep 2015* | 2.3.0 |
| Mar 2015 | | | | 6.8 |
| Apr 2015 | *May 2017* | 2.4.0 |
| Apr 2015 | *Jun 2020* | | | | *Debian 8 Jessie* | 2.1.4 | 2.7.9 3.4.2 |
| Apr 2015 | | | | | 15.04 Vivid | 2.1.4 | 2.7.9 3.4.3 | 6.7 |
| Jul 2015 | *May 2017* | 2.5.0 | | | 15.10 Wily |
| Jul 2015 | | | | 6.9 | 15.10 Wily |
| Aug 2015 | | | | 7.0 |
| Aug 2015 | | | | 7.1 |
| Sep 2015 | *May 2017* | 2.6.0 |
| Sep 2015 | *Sep 2020* | | *3.5.0* | | *16.04 Xenial* - 17.04 Zesty / *Stretch* |
| Oct 2015 | | | | | 15.10 Wily | 2.5.0 | 2.7.9 3.4.3 | 6.9 |
| Jan 2016 | *Jul 2017* | *2.7.0* | | | *16.04 Xenial* |
| Feb 2016 | | | | 7.2 | *16.04 Xenial* |
| Mar 2016 | *Jul 2017* | 2.8.0 |
| Apr 2016 | *Apr 2026* | | | | *16.04 Xenial* | 2.7.4 | 2.7.11 3.5.1 | 7.2 |
| Jun 2016 | *Jul 2017* | 2.9.0 | | | 16.10 Yakkety |
| Jul 2016 | | | | 7.3 | 16.10 Yakkety |
| Sep 2016 | *Sep 2017* | 2.10.0 |
| Oct 2016 | | | | | 16.10 Yakkety | 2.9.3 | 2.7.11 3.5.1 | 7.3 |
| Nov 2016 | *Sep 2017* | *2.11.0* | | | 17.04 Zesty / *Stretch* |
| Dec 2016 | **Dec 2021** | | **3.6.0** | | 17.10 Artful - **18.04 Bionic** - 18.10 Cosmic |
| Dec 2016 | | | | 7.4 | 17.04 Zesty / *Debian 9 Stretch* |
| Feb 2017 | *Sep 2017* | 2.12.0 |
| Mar 2017 | | | | 7.5 | 17.10 Artful |
| Apr 2017 | | | | | 17.04 Zesty | 2.11.0 | 2.7.13 3.5.3 | 7.4 |
| May 2017 | *May 2018* | 2.13.0 |
| Jun 2017 | *Jun 2022* | | | | *Debian 9 Stretch* | 2.11.0 | 2.7.13 3.5.3 | 7.4 |
| Aug 2017 | *Dec 2019* | 2.14.0 | | | 17.10 Artful |
| Oct 2017 | *Dec 2019* | 2.15.0 |
| Oct 2017 | | | | 7.6 | **18.04 Bionic** |
| Oct 2017 | | | | | 17.10 Artful | 2.14.1 | 2.7.14 3.6.3 | 7.5 |
| Jan 2018 | *Dec 2019* | 2.16.0 |
| Apr 2018 | *Mar 2021* | **2.17.0** | | | **18.04 Bionic** |
| Apr 2018 | | | | 7.7 | 18.10 Cosmic |
| Apr 2018 | **Apr 2028** | | | | **18.04 Bionic** | 2.17.0 | 2.7.15 3.6.5 | 7.6 |
| Jun 2018 | *Mar 2021* | 2.18.0 |
| Jun 2018 | **Jun 2023** | | 3.7.0 | | 19.04 Disco - **Buster** |
| Aug 2018 | | | | 7.8 |
| Sep 2018 | *Mar 2021* | 2.19.0 | | | 18.10 Cosmic |
| Oct 2018 | | | | 7.9 | 19.04 Disco / **Buster** |
| Oct 2018 | | | | | 18.10 Cosmic | 2.19.1 | 2.7.15 3.6.6 | 7.7 |
| Dec 2018 | *Mar 2021* | **2.20.0** | | | 19.04 Disco - 19.10 Eoan / **Buster** |
| Feb 2019 | *Mar 2021* | 2.21.0 |
| Apr 2019 | | | | 8.0 | 19.10 Eoan |
| Apr 2019 | | | | | 19.04 Disco | 2.20.1 | 2.7.16 3.7.3 | 7.9 |
| Jun 2019 | | 2.22.0 |
| Jul 2019 | **Jul 2024** | | | | **Debian 10 Buster** | 2.20.1 | 2.7.16 3.7.3 | 7.9 |
| Aug 2019 | *Mar 2021* | 2.23.0 |
| Oct 2019 | **Oct 2024** | | 3.8.0 | | **20.04 Focal** - 20.10 Groovy |
| Oct 2019 | | | | 8.1 |
| Oct 2019 | | | | | 19.10 Eoan | 2.20.1 | 2.7.17 3.7.5 | 8.0 |
| Nov 2019 | *Mar 2021* | 2.24.0 |
| Jan 2020 | *Mar 2021* | 2.25.0 | | | **20.04 Focal** |
| Feb 2020 | | | | 8.2 | **20.04 Focal** |
| Mar 2020 | *Mar 2021* | 2.26.0 |
| Apr 2020 | **Apr 2030** | | | | **20.04 Focal** | 2.25.1 | 2.7.17 3.8.2 | 8.2 |
| May 2020 | *Mar 2021* | 2.27.0 | | | 20.10 Groovy |
| May 2020 | | | | 8.3 |
| Jul 2020 | *Mar 2021* | 2.28.0 |
| Sep 2020 | | | | 8.4 | 21.04 Hirsute / **Bullseye** |
| Oct 2020 | *Mar 2021* | 2.29.0 |
| Oct 2020 | | | | | 20.10 Groovy | 2.27.0 | 2.7.18 3.8.6 | 8.3 |
| Oct 2020 | **Oct 2025** | | 3.9.0 | | 21.04 Hirsute / **Bullseye** |
| Dec 2020 | *Mar 2021* | 2.30.0 | | | 21.04 Hirsute / **Bullseye** |
| Mar 2021 | | 2.31.0 | | 8.5 |
| Apr 2021 | | | | 8.6 |
| Apr 2021 | *Jan 2022* | | | | 21.04 Hirsute | 2.30.2 | 2.7.18 3.9.4 | 8.4 |
| Jun 2021 | | 2.32.0 |
| Aug 2021 | | 2.33.0 | | 8.7 |
| Aug 2021 | **Aug 2026** | | | | **Debian 11 Bullseye** | 2.30.2 | 2.7.18 3.9.2 | 8.4 |
| Sep 2021 | | | | 8.8 |
| Oct 2021 | | 2.34.0 | 3.10.0 | | **22.04 Jammy** |
| Jan 2022 | | 2.35.0 |
| Feb 2022 | | | | 8.9 | **22.04 Jammy** |
| Apr 2022 | | 2.36.0 | | 9.0 |
| Apr 2022 | **Apr 2032** | | | | **22.04 Jammy** | 2.34.1 | 2.7.18 3.10.6 | 8.9 |
| Jun 2022 | | 2.37.0 |
| Oct 2022 | | 2.38.0 | | 9.1 |
| Oct 2022 | | | 3.11.0 | | **Bookworm** |
| Dec 2022 | | 2.39.0 | | | **Bookworm** |
| Feb 2023 | | | | 9.2 | **Bookworm** |
| Mar 2023 | | 2.40.0 | | 9.3 |
| Jun 2023 | | 2.41.0 |
| Jun 2023 | **Jun 2028** | | | | **Debian 12 Bookworm** | 2.39.2 | 3.11.2 | 9.2 |
| Aug 2023 | | 2.42.0 | | 9.4 |
| Oct 2023 | | | 3.12.0 | 9.5 |
| Nov 2022 | | 2.43.0 |
| Dec 2023 | | | | 9.6 |
| Feb 2024 | | 2.44.0 |
| Mar 2024 | | | | 9.7 |
| Oct 2024 | | | 3.13.0 |
| **Date** | **EOL** | **[Git][rel-g]** | **[Python][rel-p]** | **[SSH][rel-o]** | **[Ubuntu][rel-u] / [Debian][rel-d]** | **Git** | **Python** | **SSH** |
[contact]: ../README.md#contact
[rel-d]: https://en.wikipedia.org/wiki/Debian_version_history
[rel-g]: https://en.wikipedia.org/wiki/Git#Releases
[rel-o]: https://www.openssh.com/releasenotes.html
[rel-p]: https://en.wikipedia.org/wiki/History_of_Python#Table_of_versions
[rel-u]: https://wiki.ubuntu.com/Releases
[example announcement]: https://groups.google.com/d/topic/repo-discuss/UGBNismWo1M/discussion
[repo-discuss@googlegroups.com]: https://groups.google.com/forum/#!forum/repo-discuss
[go/repo-release]: https://goto.google.com/repo-release