Fix pip build: pin flit-core<4 to match pip's build requirement - #115
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tnikolova82 wants to merge 1 commit into
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Fix pip build: pin flit-core<4 to match pip's build requirement#115tnikolova82 wants to merge 1 commit into
tnikolova82 wants to merge 1 commit into
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pip 26.x requires 'flit-core>=3.11,<4' in its pyproject.toml build-system. The previous constraint 'flit-core>=3.11' resolved to 4.0.2, which does not satisfy the <4 upper bound, causing pip installation to fail with: ERROR: Could not find a version that satisfies the requirement flit-core<4,>=3.11 (from versions: 4.0.2) This fix pins the upper bound to match pip's actual requirement.
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Summary
flit-core>=3.11,<4instead of justflit-core>=3.11in the pip recipeProblem
pip 26.x requires
flit-core>=3.11,<4in itspyproject.tomlbuild-system:The previous constraint
flit-core>=3.11resolved to flit-core 4.0.2, which does not satisfy the<4upper bound. This causes pip installation to fail:Solution
Pin the upper bound to match pip's actual requirement:
flit-core>=3.11,<4Testing
After this fix is merged and pip is rebuilt, the python-buildpack PR #1211 (pip 26.2.1 update) should pass its integration tests.
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