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@lesteve lesteve commented May 12, 2022

--feature=in-tree-build option is ignored since pip 21.3 (see here) and gives an error in pip 22.

See this build log

After doing the easy fixes, it seems that you need to pin pip to 22.0.4. The error is that pip 22.1 validates build dependencies in the pyproject.toml and so errors because oldest-supported-numpy is not installed:

❯ pip install --no-build-isolation -v .
Using pip 22.1 from /home/local/lesteve/miniconda3/envs/scratch/lib/python3.10/site-packages/pip (python 3.10)
Obtaining file:///home/local/lesteve/dev/scikit-learn
ERROR: Some build dependencies for file:///home/local/lesteve/dev/scikit-learn are missing: 'oldest-supported-numpy'.

@lesteve lesteve added Build / CI Quick Review For PRs that are quick to review labels May 12, 2022
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lesteve commented May 12, 2022

Looking at the pip changelog I am guessing that the relevant change is:
Validate build dependencies when using --no-build-isolation pypa/pip#9794

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@glemaitre glemaitre left a comment

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I think that we can merge it as a hotfix for the moment.
I don't have a real fix for the new issue. I don't understand well enough the way pip and pyproject.toml work.

I would naively think that somehow, it should be fixed either in pip or the way the metadata from oldest-supported-numpy are rewired during the build version validation.

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@ogrisel ogrisel merged commit 3275870 into scikit-learn:main May 12, 2022
@lesteve lesteve deleted the fix-arm-ci branch May 12, 2022 12:46
glemaitre pushed a commit to glemaitre/scikit-learn that referenced this pull request May 19, 2022
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4 participants