"pip cache is not found" (/home/runner/.cache/pip)

[till]

Maybe related, but not really: #816

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Description:

I expect this action to create the directory for the pip cache, when I use cache: pip, but instead it displays this message.

Action version:

v5

Platform:

• Ubuntu
• macOS
• Windows

Runner type:

• Hosted
• Self-hosted

Tools version:

I used 3.7.17

Repro steps:

    - uses: actions/setup-python@v5
      with:
        python-version: '3.7.17'
        cache: 'pip'

Expected behavior:

Action creates the cache directory for the user (probably in /home/runner/.cache/pip).

Actual behavior:

It does not create the cache folder. Also, when I run this locally (with act), the post step fails because that.

[HarithaVattikuti]

Hello @till
Thank you for creating this issue. We will investigate it and get back to you as soon as we have some feedback.

[aparnajyothi-y]

Hello @till, Thank you once again for creating this issue.
Setup-python action sets up a Python environment and it doesn't create a pip cache directory by default. The pip cache directory is created when pip installs a package and needs to cache it.
We tested the same by adding the pip installation job and pip cache file generated in the /home/runner/.cache/pip location and cached the pip installed packages. Also we are able to reproduce the error without adding the pip installation and pip hasn't cached any packages yet, so the cache directory doesn't exist.
Please find the screenshots for reference.

     - uses: actions/setup-python@v5
   with:
     python-version: '3.7.17'
     cache: 'pip'
 - name: Install dependencies
   run: |
     python -m pip install --upgrade pip
     pip install -r requirements.txt

 - uses: actions/setup-python@v5
   with:
     python-version: '3.7.17'
     cache: 'pip'

Please update the workflow as per the above and confirm.

[till]

@aparnajyothi-y what exactly are you asking me to do? Add a pip install something to confirm it gets created?

[aparnajyothi-y]

Hello @till, Add a job like below to your existing workflow to install dependency packages using pip to confirm.

• name: Install dependencies
  run: |
  python -m pip install --upgrade pip
  pip install -r requirements.txt

[till]

@aparnajyothi-y I won't get to that. I hope you don't need me to confirm.

The second bug (it fails the post step) is still there.

Somewhere in here:
https://github.com/actions/setup-python/blob/main/src/cache-save.ts

[aparnajyothi-y]

Hello @till, we tried to reproduce the second issue but unfortunately we are not able to reproduce and the post step is successful. Please find the screenshot for reference.
Could you please share the repro link and the error that you are seeing in the post setup failure to further investigate.

[aparnajyothi-y]

Hello @till, Could you please share the repro link and the error that you are seeing in the post setup failure to further investigate.