mypy disallow-untyped-calls check fails for google-auth 2.30

[n0jam]

Environment details

• OS: Ubuntu 22.04
• Python version: 3.10.11
• pip version: 24.1
• google-auth version: 2.30

Steps to reproduce

1. Install mypy and google-auth in a virtualenv
2. Create a sample script only containing:

import google.auth
source_credentials, project = google.auth.default()

3. Run mypy --ignore-missing-imports --disallow-untyped-calls ./

With google-auth==2.29 this works fine.
With google-auth==2.30 this fails with
error: Call to untyped function "default" in typed context [no-untyped-call]

Did something change from google-auth 2.29 -> 2.30 regarding the typing?
Thanks in advance!

[clundin25]

I can reproduce this.

I do not see any commit that seems suspicious.

When I try to reproduce by pip installing from my filesystem this always fails for me, which makes it difficult to pinpoint any specific regression.

How important is this to you?

[n0jam]

It is not that important. We can ignore this mypy check for now, and test if it is resolved in the next google-auth version. It was more out of interest to understand why this error is raised.

[antoni-szych-rtbhouse]

This commit caused issues: c993504

You can reproduce this with:

(previous commit)
>pip install git+https://github.com/googleapis/google-auth-library-python@dc6a4c15f259d6cff03dccfef2ae6958636c9d8e
...

> mypy sample_script.py
Success: no issues found in 1 source file

> pip uninstall google-auth
...

> pip install git+https://github.com/googleapis/google-auth-library-python@c99350455d0f7fd3aab950ac47b43000c73dd312
...

> mypy my_example.py
...
error: Call to untyped function "default" in typed context  [no-untyped-call]
error: Call to untyped function "Credentials" in typed context  [no-untyped-call]

I guess that something changed in the process of releasing of wheels after 2.29? In 2.29 install from git vs install from pypi gives different results (additional py.typed files on github, missing in pypi wheels):

# install from git
pip install git+https://github.com/googleapis/[email protected]

$ ls /home/.../lib/python3.11/site-packages/google/auth/*py.t*
/home/.../lib/python3.11/site-packages/google/auth/py.typed

$ ls /home/.../lib/python3.11/site-packages/google/oauth2/*py.t*
/home/.../lib/python3.11/site-packages/google/oauth2/py.typed

$ pip uninstall google-auth
Found existing installation: google-auth 2.29.0
Uninstalling google-auth-2.29.0:
  Would remove:
.../lib/python3.11/site-packages/google/auth/*
.../lib/python3.11/site-packages/google/oauth2/*
.../lib/python3.11/site-packages/google_auth-2.29.0.dist-info/*

Proceed (Y/n)? y
  Successfully uninstalled google-auth-2.29.0


# install from pypi

$ pip install google-auth==2.29.0
Collecting google-auth==2.29.0
  Using cached google_auth-2.29.0-py2.py3-none-any.whl (189 kB)
Installing collected packages: google-auth
Successfully installed google-auth-2.29.0

$ ls /home/.../lib/python3.11/site-packages/google/auth/py.typed
ls: cannot access /home/.../lib/python3.11/site-packages/google/auth/py.typed: No such file or directory

$ ls /home/.../lib/python3.11/site-packages/google/oauth2/py.typed
ls: cannot access /home/.../lib/python3.11/site-packages/google/oauth2/py.typed: No such file or directory

seems like there was an update:

- gcp-releasetool==1.16.0 \
+ gcp-releasetool==2.0.0 \

in f01a690

I would guess that's the reason for github vs pypi installs being different for 2.29 and older (mypy error only for github versions, but no errors for pypi releases), while being the same (mypy error for both pypy and github releases) for 2.30.

[n0jam]

thanks for debugging this further!
I tried version 2.31 but the behavior is the same as for 2.30.

[akx]

This is probably related to #1526.

Now that py.typed files are actually shipped, Mypy expects this package to be well typed, which it isn't, everywhere.

Related: #1567