Improve handling of overloads with ParamSpec
#12953
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hauntsaninja
approved these changes
Jun 7, 2022
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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Thanks @hauntsaninja! |
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Description
Fixes #12922 (a crash report).
Mypy's logic for overlapping overloads currently doesn't account for the existence of
ParamSpecs. This PR fixes that.Test Plan
I added a test that ensures that the crash report in #12922 is fixed, and that ensures that basic type inference works as expected.
I'm not 100% confident I've covered all edge cases, but I think this is better than the status quo, anyway.