Sync typeshed#21612
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Source commit: python/typeshed@feeb9aa
This is allegedly causing large performance problems, see 13821 typeshed/8231 had zero hits on mypy_primer, so it's not the worst thing to undo. Patching this in typeshed also feels weird, since there's a more general soundness issue. If a typevar has a bound or constraint, we might not want to solve it to a Literal. If we can confirm the performance regression or fix the unsoundness within mypy, I might pursue upstreaming this in typeshed. (Reminder: add this to the sync_typeshed script once merged)
The plugin provides superior type checking: #13987 (comment) A manual cherry-pick of e437cdf.
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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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Sync typeshed
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python/typeshed@feeb9aa
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