Fedora 35 Change: Retire python3.5 (Self-Contained Change proposal)

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https://fedoraproject.org/wiki/Changes/RetirePython3.5


== Summary ==
The {{package|python3.5}} package will be retired without replacement
from [[Releases/35|Fedora 35]]. Python 3.5 has been End of Life since
September 2020 and was kept around only to test software targeting
Ubuntu 16.04 “Xenial Xerus” LTS and Debian 9 “Stretch” LTS. The
removal is more or less aligned with
[https://wiki.debian.org/LTS/Stretch Debian 9 EOL] (2022-06-30) --
Fedora 34 EOLs on 2022-05-17. Ubuntu 16.04 LTS EOLs sooner, in April
2021.

== Owner ==
* Name: [[User:Churchyard|Miro Hrončok]]
* Email: mhroncok@xxxxxxxxxx


== Detailed Description ==
The {{package|python3.5}} package with the Python interpreter in
version 3.5 is kept in Fedora only to make it possible for Fedora
users to test their software against the Python version shipped in
Ubuntu 16.04 “Xenial Xerus” LTS and Debian 9 “Stretch” LTS.

[https://wiki.ubuntu.com/Releases Ubuntu 16.04 “Xenial Xerus” LTS
standard support ends in April 2021].
[https://wiki.debian.org/LTS/Stretch Debian 9 “Stretch” LTS is End of
Life in 2022-06]. This very roughly corresponds with the
[https://fedorapeople.org/groups/schedule/f-36/f-36-key-tasks.html
Fedora 34 EOL]. Hence, we decided to retire (completely remove)
{{package|python3.5}} from Fedora 35, before it gets released. Users
who target Debian 9 can use Fedora 34 until it EOLs.

== Feedback ==
This was announced on the Python list prior to submitting the change
proposal: https://lists.fedoraproject.org/archives/list/python-devel@xxxxxxxxxxxxxxxxxxxxxxx/thread/ITX7QFF6CLBOOAPE4RA52QTGPMEL5QII/

There was no pushback.

== Benefit to Fedora ==
The maintenance of Python 3.5 was getting harder and harder every
year. The support for Python 3.5 has disappeared from pip and
setuptools, and an older version of pip/setuptools has to be bundled
in {{package|python3.5}}, while pip and setuptools bundle even more
old libraries. Support from tox and virtualenv will eventually
disappear as well.

There is no direct benefit here, except that we don't want to maintain
it anymore and we don't think it's a good idea either.

Consider this change proposal a louder orphaning, except that we will
continue to maintain the package in older released and supported
Fedoras (33 and 34). If you wish to continue maintaining Python 3.5 in
Fedora, please [[SIGs/Python|speak to us]] first.

== Scope ==
* Proposal owners: Retire {{package|python3.5}}. Obsolete it from
{{package|fedora-obsolete-packages}} if it causes troubles on
upgrades. Make sure no Fedora package depends on it in any way (incl.
weak dependencies).
* Other developers: N/A (not a System Wide Change)
* Release engineering: N/A (not a System Wide Change)
* Policies and guidelines: N/A (not a System Wide Change)
* Trademark approval: N/A (not needed for this Change)


== Upgrade/compatibility impact ==
The package will no longer be available from the repositories, but it
may remain on existing installations. If it causes troubles on
upgrade, it needs to be obsoleted.

== How To Test ==
N/A (not a System Wide Change)

== User Experience ==
No more Python 3.5 to test user software on.

== Dependencies ==
N/A (not a System Wide Change)

== Contingency Plan ==
* Contingency mechanism: (What to do?  Who will do it?) N/A (not a
System Wide Change)
* Contingency deadline: N/A (not a System Wide Change)
* Blocks release? N/A (not a System Wide Change)
* Blocks product? product

== Documentation ==
N/A (not a System Wide Change)




-- 
Ben Cotton
He / Him / His
Senior Program Manager, Fedora & CentOS Stream
Red Hat
TZ=America/Indiana/Indianapolis
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