Open Stack

On 2023-05-11 16:27:56 -0400 (-0400), Scott Little wrote:
[...]
> I would plea to you to NOT delete the elements of Train that allow
> other projects to compile old openstack releases, e.g. your gits
> branches.

For future reference, it's unsafe to assume branches stick around
forever. Projects may EOL and delete them as soon as 18 months from
the coordinated release (when normal maintenance for those branches
ends). Tags, on the other hand, are kept indefinitely. If you need
to know the most recent stable point release tag for a given
coordinated release series, you can find them listed on the releases
site: As an example, https://releases.openstack.org/train/index.html
lists them for Train.

While many projects practice an "extended maintenance" to allow
interested members of the community to continue backporting fixes on
stable branches after that point, those branches are intended as a
point of coordination for downstream maintainers who want to
collaborate upstream on developing and reviewing backports for older
releases. Branches under extended maintenance don't receive point
releases and aren't intended to be consumed directly for deployment,
but are rather meant as a source for cherry-picking relevant fixes.

Not all projects practice extended maintenance and may EOL and
delete their branches at any point after normal maintenance ends,
but even those who do extend maintenance as long as possible are
eventually sunset in a similar fashion. Mandatory sunset is
currently about 5 years from the initial coordinated release for
that series, but we probably need to shorten it given challenges
with testing 10 different branches across projects and lack of
actual extended maintenance interest from downstream consumers and
redistributors (they're interested in things being maintained of
course, but not doing the work to make it happen).
-- 
Jeremy Stanley
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