AssertionError: would build wheel with unsupported tag ('cp313', 'cpwin32', 'win32')

(Coming from wheel) @agronholm, does this need a new release of wheel? I thought the only thing missing was free-threading (which we are not adding yet).

Edit: This should be supported in wheel 0.43.

Tag parsing is done via the vendored packaging library, and I explicitly made the 0.43.0 release to incorporate that in wheel.

Can you confirm which version of wheel was even used? Where does the test suite install that?

It seems to be only on Windows, and it's (at least) these four tests:

FAILED test/test_0_basic.py::test[pip] - subprocess.CalledProcessError: Command '['C:\\hostedtoolcache\\windows\\Python\\3.12.3\\x64\\python.exe', '-m', 'cibuildwheel', '--prerelease-pythons', '--output-dir', 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\tmpu5qo0yto', '.']' returned non-zero exit status 1.
FAILED test/test_before_all.py::test_cwd - subprocess.CalledProcessError: Command '['C:\\hostedtoolcache\\windows\\Python\\3.12.3\\x64\\python.exe', '-m', 'cibuildwheel', '--prerelease-pythons', '--output-dir', 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\tmpdb__fxb6', '.']' returned non-zero exit status 1.
FAILED test/test_before_build.py::test_cwd - subprocess.CalledProcessError: Command '['C:\\hostedtoolcache\\windows\\Python\\3.12.3\\x64\\python.exe', '-m', 'cibuildwheel', '--prerelease-pythons', '--output-dir', 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\tmpbhu69bgj', '.']' returned non-zero exit status 1.
FAILED test/test_before_all.py::test - subprocess.CalledProcessError: Command '['C:\\hostedtoolcache\\windows\\Python\\3.12.3\\x64\\python.exe', '-m', 'cibuildwheel', '--prerelease-pythons', '--output-dir', 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\tmpugwbyfy3', '.']' returned non-zero exit status 1.

I see a (3.12) venv seeded with 0.37.1, though the isolated build shouldn't pick up this cached version from what I understand. I think it's only failing on Windows, I'm rerunning with fail-fast off to check, though.

The issue comes from cibuildwheel.
The environment is pre-seeded, there's no pin on setuptools / wheel anymore (9879937) but the project does not have a pyproject.toml so pre-seeded with outdated versions is used.

Reproduced there: https://github.com/mayeut/sandbox/actions/runs/9029260391

@henryiii, I'll force push and overwrite your commits with something else.

maybe we ought to get the fixes / changes in the last 3 commits in another PR to discuss those changes ?

Might make sense, yes. I don't think we should be injecting or pinning setuptools/wheel; if someone is building on Python 3.12 or 3.13 and doesn't have a pyproject.toml, I think they should be required to pip install setuptools and wheel in CIBW_BEFORE_BUILD. (Or add a pyproject.toml).