Using uv to simplify and speedup the CI #2673
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Avasam
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Oct 26, 2025
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| cache: pip | ||
| cache-dependency-path: .github/workflows/main.yml |
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There already was nothing to cache here.
I also kept setup-python to keep testing in a global user install (this can still be done with uv if you pre-install Python, but at this point having actions/setup-python + astral-sh/setup-uv wouldn't bring any benefit for this step if there's no dependency to quickly install.
Avasam
commented
Oct 26, 2025
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| - name: Build wheels | ||
| run: python -m build --wheel --config-setting=--build-option=build_ext --config-setting=--build-option=-L.\arm64libs --config-setting=--build-option=--plat-name=win-arm64 --config-setting=--build-option=build --config-setting=--build-option=--plat-name=win-arm64 --config-setting=--build-option=bdist_wheel --config-setting=--build-option=--plat-name=win-arm64 | ||
| run: uv build --wheel --config-setting=--build-option=build_ext --config-setting=--build-option=-L.\arm64libs --config-setting=--build-option=--plat-name=win-arm64 --config-setting=--build-option=build --config-setting=--build-option=--plat-name=win-arm64 --config-setting=--build-option=bdist_wheel --config-setting=--build-option=--plat-name=win-arm64 |
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This command is further simplified in #2583
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uv is a fast and modern replacement for
setup-python,pip,build,venv,twine1, made by the same folks as Ruff.I've been using uv for over a year and it's a game-changer for packaging and environment management. Being Windows-only and having no runtime dependencies, pywin32 is pretty simple, but we can still benefit from a pretty significant speedup.
In the times below, I omitted the slowest and fastest times in a job matrix as outliers. The exact time save is hard to say, but the trend is clear:
buildfor cross-compilations goes from 3-14s down to 0 (no need to install extra dep)Footnotes
Whilst
uv publishcan be used to replace twine for publishing, there are no changes needed to your current workflow and you can keep using twine as you were. ↩Most of the time, the
actions/setup-pythonstep takes 6-18s, which would be equivalent, but it also sometimes randomly take around a minute for unknown reasons. ↩