@steep-eve-20716 is wondering whether we could add a default value for `path_mappings`: https://github.com/pantsbuild/pants/issues/21287#issuecomment-2287210068 For instance:

[python-repos]
path_mappings = [
    'BUILD_ROOT|%(buildroot)s',
]

Thoughts?

Will it affect any of the existing users who haven't set that value in their pants.toml?

Yeah, the main thing I would be worried about here is if adding the

BUILD_ROOT

path mappings as a default somehow screws up the resolution for third-party packages; however if that isn’t an issue then I’d fully support adding it as a default