test-groups option causes unexpected error on Windows

[trvto]

When building my wheels I am using the test-groups option to install dependencies needed for testing that are specified in the pyproject.toml. On Linux and Mac no problem. On Windows I get the error:

  + pip install 'maturin<2.0,>=1.1' 'pip>=24.3.1' 'pytest>=8.3.4' 'pytest-snapshot>=0.9.0' 'pytest-mock>=3.14.0' 'ruff>=0.9.0' 'mypy<2,>=1.9.0' 'pytest-cov<6,>=5.0.0'
  The system cannot find the file specified.
  Error: cibuildwheel: Command ['C:\\Users\\runneradmin\\AppData\\Local\\Temp\\cibw-run-2pnwyac5\\cp310-win_amd64\\venv-test\\Scripts\\pip.EXE', 'install', 'maturin<2.0,>=1.1', 'pip>=24.3.1', 'pytest>=8.3.4', 'pytest-snapshot>=0.9.0', 'pytest-mock>=3.14.0', 'ruff>=0.9.0', 'mypy<2,>=1.9.0', 'pytest-cov<6,>=5.0.0'] failed with code 1. 

The command shown is being triggered by the test-groups option.

Any Ideas what could be going wrong?

[henryiii]

There are some strange quoting rules on Windows when using special characters, and I expect this is a manifestation of this. I don't think we can switch to --group since pip never made a release on 3.8 that had --group, so we probably should see where we need to add extra quotes.

[trvto]

Okay, thanks for the info! I'm building for 3.10. I got it working using

before-test = [
    'pip install --upgrade pip',
    'pip install --group {project}/pyproject.toml:dev'
]

so I can just use that as a workaround on Windows for now.

Might be good to document that somewhere if it can't be done through test-groups