pre-commit fails to install isort 5.11.4 with error "RuntimeError: The Poetry configuration is invalid"

Question

pre-commit suddenly started to fail installing the isort hook in our builds today with the following error

[INFO] Installing environment for https://github.com/pycqa/isort.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
An unexpected error has occurred: CalledProcessError: command: ('/builds/.../.cache/pre-commit/repo0_h0f938/py_env-python3.8/bin/python', '-mpip', 'install', '.')
return code: 1
expected return code: 0
[...]
stderr:
      ERROR: Command errored out with exit status 1:
[...]
        File "/tmp/pip-build-env-_3j1398p/overlay/lib/python3.8/site-packages/poetry/core/masonry/api.py", line 40, in prepare_metadata_for_build_wheel
          poetry = Factory().create_poetry(Path(".").resolve(), with_groups=False)
        File "/tmp/pip-build-env-_3j1398p/overlay/lib/python3.8/site-packages/poetry/core/factory.py", line 57, in create_poetry
          raise RuntimeError("The Poetry configuration is invalid:\n" + message)
      RuntimeError: The Poetry configuration is invalid:
        - [extras.pipfile_deprecated_finder.2] 'pip-shims<=0.3.4' does not match '^[a-zA-Z-_.0-9]+$'

It seems to be related with poetry configuration..

Answer 1

Upgrading the hook to the freshly released isort 5.12.0 seems to be fixing the issue.

Looking at the commit stack from isort repo, it sounds like recent version of Poetry had a breaking change incompatible with isort <= 5.11.4 ( commit )

Answer 2

Additional note: For people which must use python3.7 (the support was dropped in isort 5.12.0 ), isort released the hotfix 5.11.5 .

https://github.com/PyCQA/isort/releases/tag/5.11.5

5.11.5 January 30 2023 [hotfix]

Fixed incompatiblity with latest poetry version

Related isort issue: https://github.com/PyCQA/isort/issues/2083#issuecomment-1408300628