pip install stable-baselines3 cause installing gym==0.21 and throw error in gym setup command: 'extras_require'

[yasirroni]

🐛 Bug

Bug installing stable_baselines3-1.8.0-py3-none-any.whl (174 kB) resulted in installing gym==0.21 instead of gymnasium==0.28.1 or latest gym==0.26.2.

pip install stable-baselines3 --upgrade
Collecting stable-baselines3
  Using cached stable_baselines3-1.8.0-py3-none-any.whl (174 kB)
Collecting gym==0.21 (from stable-baselines3)
  Using cached gym-0.21.0.tar.gz (1.5 MB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [1 lines of output]
      error in gym setup command: 'extras_require' must be a dictionary whose values are strings or lists of strings containing valid project/version requirement specifiers.
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

To Reproduce

pip install stable-baselines3 --upgrade

Relevant log output / Error message

No response

System Info

No response

Checklist

• I have checked that there is no similar issue in the repo
• I have read the documentation
• I have provided a minimal working example to reproduce the bug
• I've used the markdown code blocks for both code and stack traces.

[yasirroni]

Thanks. Didn't found that docs.
_
Current solution, install the alpha version: pip install stable-baselines3==2.0.0a13 from https://pypi.org/project/stable-baselines3/2.0.0a13/

[araffin]

Didn't found that docs.

https://stable-baselines3.readthedocs.io/en/master/guide/install.html

"Only Stable-Baselines3 2.x supports Gymnasium. As SB3 2.x is currently in beta, you will need to specify pip install "stable_baselines3[extra]>=2.0.0a9" explicitly, or install the master version (see below)."

Duplicate of #1455, #1406 and openai/gym#3176 (comment) and #1324 for the error