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Support free threaded Python versions like '3.13t' #973

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colesbury
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Python wheels, pyenv, and a number of other tools use 't' in the Python version number to identify free threaded builds. For example, '3.13t', '3.14.0a1', '3.14t-dev'.

This PR supports that syntax in actions/setup-python, strips the "t", and adds "-freethreading" to the architecture to select the correct Python version.

See #771 and actions/python-versions#319

Python wheels, pyenv, and a number of other tools use 't' in the Python
version number to identify free threaded builds. For example, '3.13t',
'3.14.0a1', '3.14t-dev'.

This PR supports that syntax in `actions/setup-python`, strips the "t",
and adds "-freethreading" to the architecture to select the correct
Python version.

See actions#771
@renxida
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renxida commented Nov 24, 2024

Meanwhile, if you can't wait, here at https://github.com/nod-ai/shark-ai/actions/workflows/ci_linux_x64_nogil-libshortfin.yml

we are using

    - name: Setup Python
      uses: deadsnakes/action@e640ac8743173a67cca4d7d77cd837e514bf98e8 # v3.2.0
      with:
        python-version: "3.13-dev"
        nogil : true

@rgommers
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rgommers commented Nov 24, 2024

If anyone needs the functionality in this PR, I'd recommend to use https://github.com/Quansight-Labs/setup-python. That is a fork of this action with the sole purpose of providing the functionality in this PR (free-threading support) until this PR gets merged (see this issue for context).

Data point for reviewers: we've exercised this PR quite heavily by now in projects like NumPy and SciPy, on Linux, macOS and Windows (x86-64 and aarch64/arm64), and it's been working smoothly to date.

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3 participants