pypa / pypa/setuptools

Keep Py3.9 support

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Description

I'd like to discuss the removal of support for Python 3.9.

I am aware that it's officially EOL now, that it's always possible to use older setuptools versions, and that maintaining support for EOL software can become tedious. That said, in the Cython project, we decided to keep 3.9 as our longer-term base version to support because it will continue to be used in RHEL-9 and Amazon Linux 2023 for years to come. Here's our breakdown of supported Python versions at the time:

https://github.com/cython/cython/issues/7271

IMHO, for a build tool like setuptools, maintaining support for the widest possible range of platforms is generally desirable to cater for user needs. Python 3.9 doesn't look like it's going away any time soon, and keeping the support in the build tools would greatly ease the work on user side.

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First steps

  1. Read the whole issue, then the project's contributing guide.
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  3. Fork the repository and make your change on a branch.
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Research direction

No files, tests, or entry points are named. Start by reviewing the Python version support discussion and the linked Cython issue, then identify the project metadata and CI implications of retaining Python 3.9 support. Done means reaching and documenting a decision on whether support should remain.

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Assessment

Tech stack
python
Domain
build-system
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
35/100

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