RecursionError when installing mkdocs-material

[ndevln]

• I am on the latest Poetry version.

• I have searched the issues of this repo and believe that this is not a duplicate.

• If an exception occurs when executing a command, I executed it again in debug mode (-vvv option).

• OS version and name: Windows 10 Pro 1909 18363.719

• Poetry version: 1.0.5

• Link of a Gist with the contents of your pyproject.toml file: https://gist.github.com/ndevln/f27b5b64251241d40e1b960ec96b8b68

Issue

Hi,

when running: poetry install -E docs_material I get the following error:

[RecursionError]
maximum recursion depth exceeded

There are quite a few similar issues (like #2329), but it seems that this problem is package specific?!?

Thank you for poetry and your effort :)

[ndevln]

Could be fixed by #2342 and #2361. I can test it when these PR are part of the pre-release version.

[ndevln]

The problem persists in 1.1.0a2 (and 1.0.9).

Installing dependencies from lock file

  RecursionError

  maximum recursion depth exceeded

  at ~\.poetry\lib\poetry\utils\extras.py:47 in <genexpr>
      43│             if package:
      44│                 yield package.name
      45│                 # Recurse for dependencies
      46│                 for dependency_package_name in _extra_packages(
    → 47│                     dependency.name for dependency in package.requires
      48│                 ):
      49│                     yield dependency_package_name
      50│
      51│     return _extra_packages(extra_package_names)

[sdispater]

@ndevln When using 1.1.0a2 did you regenerate your lock file?

[ndevln]

I did not.

I tried again with 1) regenerating the lock file, 2) deleting the lock file and creating it new. For my last test I used the minimal example from the gist above and created a new virtual environment. But still all 3 tests resulted in the same error. Sry

[github-actions]

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