UPD(17.02.2025): To anyone landing here from Google or hitting this bug otherwise

- name: Restore pip cache
  uses: re-actors/cache-python-deps@release/v1
  with:
    cache-key-for-dependency-files: >-
      ${{
        hashFiles(
          '.pre-commit-config.yaml',
          'requirements/**',
          'tox.ini',
          'tox.toml',
          'pyproject.toml'
        )
      }}

Description:

I've been updating a few GHA configurations today and in the process saw the same error in several places. Interestingly, in some repos it fails in one workflow but works in another. I've been seeing this for the past few hours, but this is in repos I haven't touched in months, so the issue might've appeared earlier.

I've tried finding differences and similarities, but cannot say anything definitive.

Among the similarities, there's these:

Current runner version: '2.322.0'
Runner Image
  Image: windows-2019
  Version: 20250209.1.0
Runner Image Provisioner
  2.0.422.1

Also, the action fails on both windows-2019 and windows-2022. It fails in matrixes that pass a variety of Python versions, starting with 3.9 and all the way to 3.13.

Another bit I noticed was that some of the jobs downloaded immutable actions, while others fetched from Git. But there's examples of both in failing/passing action invocations.

Failing job examples (there's more in the same workflow runs):

• https://github.com/aio-libs/frozenlist/actions/runs/13314999958/job/37186948056#step:4:27
• https://github.com/cherrypy/cheroot/actions/runs/13314563336/job/37185295001#step:3:20

Success example:

• https://github.com/cherrypy/cheroot/actions/runs/13314453736/job/37185039139#step:2:27

As you can see, there's successes and failures in the same repo, just different job definitions.

While writing this, I also noticed that the failing ones have some sort of file preparation before calling setup-python and caching args enabled. Worth checking out... I'll report back once I experiment some more.

Action version:

v5

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

🤷‍♂ seems to be any Python version and any windows image.

Repro steps:

Add a step with actions/setup-python@v5 into a windows job, set PIP_NO_PYTHON_VERSION_WARNING: 1 env var and add the cache: pip input.

Expected behavior:

It should succeed.

Actual behavior:

The action spits out Error: Could not get cache folder path for pip package manager, after the successful Installed versions output, and crashes the job.