Mypy unable to see py.typed marker for partial builds

[addisonklinke]

Caveat: I'm not much of a typing expert, so maybe I've missed something, but I have a hard type getting mypy to accept a partial builds

To reproduce

With mypy==1.15.0

# my_lib/aliases.py
from functools import partial

from hydra_zen import builds

builds_full_sig = partial(builds, populate_full_signature=True)

# error: Need type annotation for "builds_full_sig"  [var-annotated]

Switching to the more verbose

def builds_full_sig(*args, **kwargs):
    return builds(*args, populate_full_signature=True, **kwargs)

# Package 'my_lib.aliases' cannot be type checked due to missing py.typed marker. 
# See https://mypy.readthedocs.io/en/stable/installed_packages.html for more details

Theory

I see py.typed has existed here for 4 years, so somehow mypy isn't applying that to builds?

Desired behavior

Similar to how ZenStore is self-partially to build in common defaults, it'd be nice to enable this for builds (with mypy support)

[rsokl]

Can you try using make_custom_builds with populate_full_signature=True? This function is designed to have the proper overloads for supporting the above, whereas partial is not able to achieve this.

I don't use mypy (whereas we have very high quality support for pyright) but we do have some mypy tests, including that mypy treats make-custom-builds appropriately: https://github.com/mit-ll-responsible-ai/hydra-zen/blob/main/tests/annotations/mypy_checks.py#L29

I see py.typed has existed here for 4 years, so somehow mypy isn't applying that to builds?

py.typed is simply a file that tells type-checkers that a library publishes type annotations. So this isn't a matter of it applying to builds. I think in your my_lib example the issue is that my_lib doesn't have a py.typed file.

[addisonklinke]

Thanks for the suggestion! I updated to

from hydra_zen import make_custom_builds_fn

builds_full_sig = make_custom_builds_fn(populate_full_signature=True)

but still getting Need type annotation for "builds_full_sig" [var-annotated] regardless of whether my_lib/py.typed exists or not

[rsokl]

That's weird.. I don't understand what that means