[3.12] gh-112507: Detect Cygwin and MSYS with `uname` instead of `$OS… by vsajip · Pull Request #130674 · python/cpython
…TYPE` (GH-112508) (cherry picked from commit d7b5f10) Issue: venv/scripts/common/activate should use uname instead of $OSTYPE to detect Cygwin and MSYS #112507