In pypa/twine#618, I'm adding py.typed so that Twine's type annotations are recognized when it's used as an installed package. I've set zip_safe=False as suggested by the mypy docs:

If you use setuptools, you must pass the option zip_safe=False to setup(), or mypy will not be able to find the installed package.

However, one of the other maintainers has requested removing this: pypa/twine#618 (comment)

The only references I've found to zip_safe in the mypy repo are:

• mypy cannot find module installed as editable by pip · Issue #7508
• Support egg installs with PEP 561 searching · Issue #5007

I've done some cursory testing without setting zip_safe, including using pip install -e path/to/twine, and it doesn't seem to be necessary. However, the note quoted above seems unequivocal. Is it still accurate? Could it be expanded?

Caveat: I've only skimmed the issues above, and am far from an expert on the various use cases of setuptools, esp. editable installs.