Setting python_version 3.8 in Pipfile prevents renovate from working

[Henrik Poulsen]

What Renovate type, platform and version are you using?

Self-hosted using docker tag renovate/renovate:23.

Describe the bug

Changing the python_version field in the Pipfile to 3.8 resulted in a PR being updated with the “Artifact update problem” message. And the details being:

File name: Pipfile.lock

Command failed: pipenv lock
Warning: Python 3.8 was not found on your system...
Neither 'pyenv' nor 'asdf' could be found to install Python.
You can specify specific versions of Python with:
$ pipenv --python path/to/python

I was under the impression that this should have been fixed as mentioned in renovatebot/renovate#6035 so not sure what is going on here.

Relevant debug logs

 WARN: Error in read setup file (repository=my/app)
       "stdout": "/data/repos/github/my/app\n",
       "stderr": "/usr/local/python/3.9.0/lib/python3.9/site-packages/setuptools/distutils_patch.py:25: UserWarning: Distutils was imported before Setuptools. This usage is discouraged and may exhibit undesirable behaviors or errors. Please use Setuptools' objects directly or at least import Setuptools first.\n  warnings.warn("
 INFO: Dependency extraction complete (repository=my/app)
       "baseBranch": "test",
       "stats": {
         "managers": {
           "docker-compose": {"fileCount": 1, "depCount": 2},
           "dockerfile": {"fileCount": 1, "depCount": 1},
           "pip_requirements": {"fileCount": 1, "depCount": 3},
           "pipenv": {"fileCount": 1, "depCount": 25}
         },
         "total": {"fileCount": 4, "depCount": 31}
       }
 INFO: Branch updated (repository=my/app, branch=renovate/lz4-3.x)
       "commitSha": "32ca720"
 INFO: PR updated (repository=my/app, branch=renovate/lz4-3.x)
       "pr": 272,
       "prTitle": "Update dependency lz4 to v3.1.1"
 WARN: artifactErrors (repository=my/app, branch=renovate/lz4-3.x)
       "artifactErrors": [
         {
           "lockFile": "Pipfile.lock",
           "stderr": "Command failed: pipenv lock\nWarning: Python 3.8 was not found on your system...\nNeither 'pyenv' nor 'asdf' could be found to install Python.\nYou can specify specific versions of Python with:\n$ pipenv --python path/to/python\n"
         }
       ]

To Reproduce

Set the python_version field in Pipfile to 3.8.
That's literally all I did and it went from functional to unhappy.

Additional context

Nothing to add

[Rhys Arkins]

Renovate's official Docker image is now built with python 3.9: https://github.com/renovatebot/docker-renovate-full/blob/bbf5bb94f30ce8a485b0c7b538656d5d606a3ce7/Dockerfile#L34

If you need to run custom versions of any tools, you have two options:

• Fork and maintain your own Dockerfile build with versions of your choosing
• Use the slim Docker image and map the Docker socket into the Renovate container so that it can create side containers with the right version at runtime

[stale]

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