[3.12] gh-112507: Detect Cygwin and MSYS with `uname` instead of `$OS…#130674

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vsajip merged 1 commit intopython:3.12from

vsajip:backport-d7b5f10-3.12

Feb 28, 2025

Commits on Feb 28, 2025

[3.12] gh-112507: Detect Cygwin and MSYS with `uname` instead of `$OSTYPE` (GH-112508)

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