Seemingly correct version and environment not being recognized

Describe the bug A clear and concise description of what the bug is. I have a simple setup python job at the top of my workflow.

      - name: Set up Python 3.7.7
        id: python_setup
        uses: actions/setup-python@v2
        with:
          python-version: '3.7.x'
          architecture: 'x64' # optional x64 or x86. Defaults to x64 if not specified

However, when I run it, it doesn’t seem to work. The weird thing is that you can see that the lines appear to pass correctly, but the test still fails.

[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.7.8 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && darwin===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x86===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.7.7 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && darwin===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x86===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.7.6 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && darwin===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x86===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.7.5 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && darwin===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && linux===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x64===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::x86===x64 && win32===linux
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.6.11 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.6.10 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.6.9 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.6.8 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.6.7 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.5.9 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.5.4 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.4.10 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 3.3.7 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 2.7.18 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   💬  ::debug::check 2.7.17 satisfies 3.7.x
[Lint and Test/Lint and Test    ]   ❗  ::error::Version 3.7.x with arch x64 not found%0AThe list of all available versions can be found here: https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json
[Lint and Test/Lint and Test    ]   ❌  Failure - Set up Python 3.7.7

Which version of the action are you using?

• v1
• v2
• Some other tag (such as v2.0.1 or master)

Environment

• self-hosted
• Linux
• Windows
• Mac

If applicable, please specify if you’re using a container

Python Versions Please list all of the effected versions of Python (3.8.2, etc.) 3.7.x

To Reproduce Steps to reproduce the behavior:

1. Set up a VM with the following: Linux cloudVM 5.3.0-1032-azure #33~18.04.1-Ubuntu SMP Fri Jun 26 15:01:15 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
2. Have a workflow with the job included.
3. Run the workflow.

Run/Repo Url If applicable, and if your repo/run is public, please include a URL so it is easier for us to investigate.

Screenshots If applicable, add screenshots to help explain your problem.

Additional context Add any other context about the problem here.

[RomainMuller]

I’m also hitting this with 3.6 (as 3.6.x). Interestingly, it works in “real” GitHub Actions, but it does not work locally using nektos/act.

[RomainMuller]

So - I suspect the culprit is actually different platform versions, which you can see in the manifest: https://raw.githubusercontent.com/actions/python-versions/main/versions-manifest.json

Those are actually (silently) checked for in @actions/tool-cache: https://github.com/actions/toolkit/blob/af821474235d3c5e1f49cee7c6cf636abb0874c4/packages/tool-cache/src/manifest.ts#L87-L96

When using nektos/act, you’d want to ensure act is using an image that has is based off one supported platform image (per it’s LSB tags). For example, adding -P ubuntu-latest=nektos/act-environments-ubuntu:18.04 to the act invocation or in .actrc (careful - the nektos/act-environments-ubuntu:18.04 image is HUGE).