ModuleNotFoundError: No module named 'pkg_resources' with setuptools 82.0.0+

[tughril]

Description

vcstool 0.3.0 fails at runtime when installed in an environment with setuptools 82.0.0 or later, because pkg_resources was removed from the setuptools package in that release.

This is the breaking change following the deprecation warning reported in #269.

Error

Traceback (most recent call last):
  File ".../bin/vcs", line 4, in <module>
    from vcstool.commands.vcs import main
  File ".../vcstool/commands/vcs.py", line 3, in <module>
    from vcstool.commands.help import get_entrypoint
  File ".../vcstool/commands/help.py", line 4, in <module>
    from pkg_resources import load_entry_point
ModuleNotFoundError: No module named 'pkg_resources'

Environment

• vcstool: 0.3.0
• setuptools: 82.0.1
• Python: 3.12
• OS: Ubuntu (GitHub Actions runner)

Steps to Reproduce

uv tool install vcstool==0.3.0  # installs setuptools 82+ as a dependency
vcs import < repos.yaml

[traversaro]

The issue has been fixed in the mantained friendly fork vcs2l, see ros-infrastructure/vcs2l#4 . Did you tested uv tool install vcs2l?

[tughril]

Oh my gosh, thank you SO much!
I migrated to vcs2l and the problems was fixed.

In another environment, I uses ros docker images.
So I created an issue in osrf/docker_images#867