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`uv --system` is failing in GitHub Actions, because `py --list-paths` returns all the pre-cached Pythons: ``` -V:3.12 * C:\hostedtoolcache\windows\Python\3.12.2\x64\python.exe -V:3.12-32 C:\hostedtoolcache\windows\Python\3.12.2\x86\python.exe -V:3.11 C:\hostedtoolcache\windows\Python\3.11.8\x64\python.exe -V:3.11-32 C:\hostedtoolcache\windows\Python\3.11.8\x86\python.exe -V:3.10 C:\hostedtoolcache\windows\Python\3.10.11\x64\python.exe -V:3.10-32 C:\hostedtoolcache\windows\Python\3.10.11\x86\python.exe -V:3.9 C:\hostedtoolcache\windows\Python\3.9.13\x64\python.exe -V:3.9-32 C:\hostedtoolcache\windows\Python\3.9.13\x86\python.exe -V:3.8 C:\hostedtoolcache\windows\Python\3.8.10\x64\python.exe -V:3.8-32 C:\hostedtoolcache\windows\Python\3.8.10\x86\python.exe -V:3.7 C:\hostedtoolcache\windows\Python\3.7.9\x64\python.exe -V:3.7-32 C:\hostedtoolcache\windows\Python\3.7.9\x86\python.exe ``` So, our default selector returns the first entry here. But none of these are actually in `PATH` except the one that the user installed via `actions/setup-python@v5` -- that's the point of the action, that it puts the correct versions in `PATH`. It seems to me like we should prioritize `PATH` over `py --list-paths`. Is there a good reason not to do this? Closes: https://github.com/astral-sh/uv/issues/2056