Add a pre-built binary for PyPy 3.9

[Xuanwo]

Hi @milesgranger, thank you for creating this.

I'm from the Apache Avro community. We rely on python-snappy, which depends on cramjam. Our tests failed on PyPy 3.9 because cramjam doesn't have built PyPy 3.9 wheels.

For example: https://github.com/apache/avro/actions/runs/11230133902/job/31216914304

Although we could figure out how to build cramjam from source or stop testing on PyPy, I wanted to discuss with you first whether it's possible to provide PyPy-3.9 on PyPI. I'm willing to help implement the workflow.

[milesgranger]

Hi, many apologies. This was removed in #177 because I saw PyPy3.9 is no longer available? https://pypy.org/download.html

If this was a mistake, I'm fine to add it back; but as it's seemingly unmaintained is it possible to "just" upgrade to pypy3.10?

[Xuanwo]

Thank you for the quick response. It appears PyPy doesn't offer a pre-built PyPy-3.9 release since PyPy version v7.3.17: https://downloads.python.org/pypy/

The PyPy team explained the removal at https://pypy.org/posts/2024/08/pypy-v7317-release.html.

The keen-eyed will have noticed no mention of Python version 3.9 in the releases above. Typically we will maintain only one version of Python3, but due to PyPy3.9 support on conda-forge we maintained multiple versions from the first release of PyPy3.10 in PyPy v7.3.12 (Dec 2022). Conda-forge is sunsetting its PyPy support, which means we can drop PyPy3.9.

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I will bring this discussion back to the Avro community to see if we can discontinue support for PyPy 3.9.

[milesgranger]

Sounds good; again I have no strong feelings against bringing it back w/ a post release if you run into any blockers on your end. 👍

[Xuanwo]

Sounds good; again I have no strong feelings against bringing it back w/ a post release if you run into any blockers on your end. 👍

Thank you for your kindness. I'll submit a PR to reintroduce PyPy 3.9 if the community feels it's still needed.

[Xuanwo]

Hi, @milesgranger. After our discussion, we decided to proceed with removing PyPy-3.9 tests: apache/avro#3211

Thank you again for your help and maintenance. I'm going to close this issue now.