I am trying to understand why

pants run "requirements:requirements#some-package" --

works to invoke the CLI of some packages but fails with

ImportError: No module named some_package.__main__; 'some_package' is a package and cannot be directly executed

in other cases. Any ideas?

I think it depends on the package and its configuration. Do you have a specific example of a package that works and one that doesn’t work so we can explore it concretely?

Unfortunately, the packages I tried are all internal. But will let you know if we identify the cause and what’s needed to make it work.

Ah okay, I think two things that are likely to be related are: • whether they have a

__main__.py

as the message references • any configured

entry_points

in the package metadata ... but probably mostly the first one 🙂