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Fail with an explicit error on PyPy - #20384
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ilevkivskyi merged 4 commits intoDec 9, 2025
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According to mypy_primer, this change doesn't affect type check results on a corpus of open source code. ✅ |
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hauntsaninja
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Dec 9, 2025
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Not sure error in setup.py is the best, since PyPy will presumably pull the pure Python wheel. Maybe we should import librt in main at runtime and error if it fails
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Oh, hm, TBH I don't know how PyPy works, but yeah, that may be more robust. I think we don't even need to try importing librt, simply fail unconditionally in main on PyPy. |
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hauntsaninja
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Fixes mypyc/librt#21 Fail with an explicit user-friendly error on PyPy.
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Apr 5, 2026
Latest Mypy versions are incompatible with PyPy: - python/mypy#20329 - python/mypy#20384
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Fixes mypyc/librt#21
Fail with an explicit user-friendly error on PyPy.