Maintain compatibility with CPython 3.13

[daskol]

See changes in Python C API in CPython 3.13 changelog. Initial discussion is in AUR.

[medaminezghal]

@daskol You need to edit the files that use asyncore (Removed in python 3.13) to make it use asyncio
This what I did in the prepare function in PKGBUILD file:

    sed -i 's/_try_asyncore_import/_try_asyncio_import/g' cassandra/cluster.py
    sed -i 's/from cassandra.io.asyncorereactor import AsyncoreConnection/from cassandra.io.asyncioreactor import AsyncioConnection/g' cassandra/cluster.py
    sed -i 's/from cassandra.io.asyncorereactor import AsyncoreConnection/from cassandra.io.asyncioreactor import AsyncioConnection/g' tests/integration/long/test_ipv6.py
    sed -i 's/(AsyncoreConnection,None)/(AsyncioConnection,None)/g' cassandra/cluster.py
    sed -i '/import asynctest/d' tests/unit/io/test_asyncioreactor.py
    sed -i 's/asynctest.TestSelector()/AsyncMock()/g' tests/unit/io/test_asyncioreactor.py
    sed -i '/from unittest.mock import patch/a from unittest.mock import AsyncMock' tests/unit/io/test_asyncioreactor.py

Maybe be you could edit the files to use asyncore or asyncio by case (python>=3.13 or not)

[medaminezghal]

@daskol and even after I edit for some reason I can't import the cassandra.io.libevwrapper

[daskol]

@medaminezghal What about cqlsh utility? It does not work without this fix because of missing cp313 wheels.

[medaminezghal]

@daskol if you build the package without the C extensions it should work (of course after editing the files that use asyncore) and then you can build cqlsh in python 3.13

[medaminezghal]

@daskol you can replace any code that use asyncore with asyncio safely https://docs.python.org/3/library/asyncore.html

[daskol]

Do pacman -S python-pyasyncore or pip install pyasyncore solve your issue? Initially, I faced with the issue of missing cp313 wheels and build failure of this dreiver from scratch.

[medaminezghal]

I think it’s not useful to use unmaintained package as provided in the description. So it’s better to use asyncio

[medaminezghal]

@daskol I think you need to fix the problem related to this issue from other project.
There is only 1 file that use asynctest package.
Also the distutils (used to build the C extensions) is deprecated and will be removed soon.