self-hosted runner failing while trying to get version

Describe the bug Getting the following error when running Version 3.x was not found in the local cache ##[error]Version 3.x with arch x64 not found The list of all available versions can be found here: https://raw.githubusercontent.com/actions/python-versions/master/versions-manifest.json

I have tried both v1 and v2 of setup-python and have tried setting a specific version or latest minor like above. I am running an amazon-linux runner and I am wondering if this will only work on Ubuntu. Could you provide some guidance. Thanks

Which version of the action are you using?

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

Environment

• [ X ] self-hosted
• [ X ] Linux
• Windows
• Mac

If applicable, please specify if you’re using a container Not using containers

Python Versions Please list all of the effected versions of Python (3.8.2, etc.) 3.7.7, 3.x

To Reproduce Steps to reproduce the behavior:

1. Add setup action step to actions file
2. Set Actions file to use self-hosted runner
3. Run action

Run/Repo Url Private repo

Screenshots

Additional context The runner is using amazon-linux2 based ami

[konradpabjan]

Officially we only support Python for the environments that are listed out here: https://github.com/actions/virtual-environments#available-environments

We compile Python from source for Ubuntu 1604, 1804 and Mac (10.15), the available versions for download are listed out here: https://github.com/actions/python-versions/blob/master/versions-manifest.json

If you have a local runner with something like Ubuntu 1904, then the platform_version will be different so nothing will be found in the manifest and the action will fail with the error you see. Same thing applies to Mac if you’re using something other than 10.15.

The fact is it’s not working on an amazon-linux runner is expected and we do not plan on supporting Python for configurations other than what we have in virtual-environments.

There are two things we can do here

• Update the README (we accept PRs 😃 )
  • Mention we only support the same platforms as those listed in virtual-environments
  • Explain why we only support those platforms - Maintenance, maintenance, maintenance - For Ubuntu and Mac, we compile from source so it is impossible to support all Linux distros and we have no plans to support more. - For Windows we download and use the MSI installers so those should work on all versions
• Even more logging and a better error message that says exactly why no version was found. It’s very ambiguous right now.

[etienne-napoleone]

I also can’t run those steps locally with act on mac