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TST: use Python 3.14t for free-threaded tests#2462
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caspervdw
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Jun 30, 2026
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This is sort-of a breaking change. Not sure how many people are actually installing with [test], but its in the README, so people might actually do this.
What's the reason for changing it?
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It's not exactly breaking, as I removed the "test" extra last week and re-labelled it as a PEP 735 dependency group e10c6da . It's just a renaming of the group name. There isn't anything in the README, but docs/installation.rst now suggests using --group dev to get a few other development dependencies.
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This changes testing free-threaded Python from 3.13t (which was regarded as experimental) to 3.14t. This fixes an issue where the latest numpy does not have the experimental 3.13t wheels anymore; cibuildwheel v4.0 builds cp314t onwards.
Two other minor changes are put here for convenience (of not creating more PRs):
*.lockfiles, e.g., uv, pixi, Pipfile