Using legacy 'setup.py install' for <pkg>, since package 'wheel' is not installed

snapcraft
1

Using python plugin. Why can’t Python use wxPython wheel?

:: Using legacy 'setup.py install' for wxPython, since package 'wheel' is not installed.

I’ve tried installing wheel manually:

    build-packages:
      - python3-wheel

    python-packages:
      - wheel == 0.42.0