#20418 Multi-parametrize doesn't work with defaults or target generators Issue created by ndellosa95 Describe the bug The new group-parametrization logic added by this PR only works for individual targets and not target generators or

__defaults__

. Pants version 2.19.0rc4 OS Mac Additional info Below is an example of the error message I see when I try and parametrize generators/defaults.

Unrecognized field `parametrize_-8470896455302443883:580806178752=parametrize('py38', interpreter_constraints=('==3.8.*',), resolve='py38')` in target <my target>. Valid fields for the target type `python_sources`: ['dependencies', 'description', 'interpreter_constraints', 'overrides', 'resolve', 'restartable', 'run_goal_use_sandbox', 'skip_black', 'skip_docformatter', 'skip_isort', 'skip_mypy', 'skip_ruff', 'sources', 'tags'].

pantsbuild/pants