[BUG] module 'importlib_metadata' has no attribute 'EntryPoints'

[daniel-larraz]

setuptools version

setuptools == {71.0.0, 71.0.1, 71.0.2, 71.0.3}

Python version

Python 3.8

OS

Ubuntu 20.04

Additional environment information

No response

Description

When running python setup.py build_ext --inplace, I get the following error:

Traceback (most recent call last):
    File "setup.py", line 23, in <module>
      from setuptools import setup
    File "/home/runner/work/cvc5/cvc5/build-shared/venv-3.8.10/lib/python3.8/site-packages/setuptools/__init__.py", line 19, in <module>
      from .dist import Distribution
    File "/home/runner/work/cvc5/cvc5/build-shared/venv-3.8.10/lib/python3.8/site-packages/setuptools/dist.py", line 30, in <module>
      from . import _entry_points
    File "/home/runner/work/cvc5/cvc5/build-shared/venv-3.8.10/lib/python3.8/site-packages/setuptools/_entry_points.py", line 44, in <module>
      def validate(eps: metadata.EntryPoints):
  AttributeError: module 'importlib_metadata' has no attribute 'EntryPoints'

Using setuptools < 71.0.0, or installing the latest version of importlib_metadata together setuptools >= 71.0.0 solves the issue.

Expected behavior

Setuptools doesn't fail.

How to Reproduce

I was not able to quickly find a minimal reproducer. I will try to find one.

Output

See description

[rcramblit]

This seems like an issue for both Python 3.8 and 3.9. EntryPoints was added to the importlib.metadata stdlib module in Python 3.10.

[daniel-larraz]

@rcramblit You are right. It's Python 3.8. Sorry for the confusion. I updated the original report.

[jaraco]

This issue is a duplicate of #4478. I'll pin it for now for better visibility.