Python 3.8 and 3.9 not found on macOS

[ZeroIntensity]

Description:
Python 3.8 and 3.9 on macOS no longer work, and actions complains about them not being a real version.

Action version:
Latest

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:
Python 3.8 - Python 3.9. It might be all versions <Python 3.10, but I haven't tested that.

Repro steps:
See this run from yesterday, vs this run from this morning on the same commit.

Expected behavior:
Python 3.8 and 3.9 should install on macOS

Actual behavior:
The following is logged to actions:

Version 3.8 was not found in the local cache
Error: Version 3.8 with arch arm64 not found
The list of all available versions can be found here: https://github.com/raw/actions/python-versions/main/versions-manifest.json

[hugovk]

This is a duplicate, macos-latest now uses M1 runners (macos-14-arm64) and 3.9 and earlier aren't available there: #696 (comment)

To fix, you can use one of the options at python/peps#3763, or stick to macos-12 or macos-13 (but you get some nice speedups using M1 where available).

[snorkman88]

I am facing the same issues when running GHA I get:

Installed versions
  Version 3.8 was not found in the local cache
  Error: The version '3.8' with architecture 'arm64' was not found for macOS 14.4.1.

[ZeroIntensity]

Odd, that issue is from months ago, but I only started having problems this morning.

[hugovk]

Yeah, macos-latest used to point to macos-12 but now points to macos-14-arm64.

You can check the top of your CI logs to see which image was used yesterday and today.

[Paebbels]

The list of offered Python versions is here: https://github.com/raw/actions/python-versions/main/versions-manifest.json

It shows no Python 3.8 and Python 3.9 for macOS (Python for ARM64 platform).