Bug report

On Linux and macOS, test_cppext fails due to:

AssertionError: would build wheel with unsupported tag ('cp313', 'cp313td', 'linux_x86_64')

Example build: https://buildbot.python.org/all/#/builders/1217/builds/286

Resolving this failure will require updating pip and our bundled pip version. In the meantime, I will skip this test on --disable-gil builds.

On Windows, there are additional build failures (test_importlib, test_peg_generator)

AssertionError: '_d.cp313-win32.pyd' not found in ['_d.cp313t-win_amd64.pyd', '_d.pyd']

LINK : fatal error LNK1181: cannot open input file 'python313_d.lib'

Example build: https://buildbot.python.org/all/#/builders/1241/builds/18

Resolving the Windows test failures require #110049 so that we have a standard way of determining --disable-gil builds from Python code.

Linked PRs

• gh-110119: Temporarily skip test_cppext on --disable-gil builds. #110123
• gh-110119: Fix test_importlib --disable-gil Windows test failures #110422
• Revert "gh-110119: Temporarily skip test_cppext on --disable-gil builds. (#110123)" #116964