stubtest does not respect the allowlist when re-exporting

[jorenham]

Describe the problem

While stubtesting scipy-stubs while working on a new feature, I got served with the following errors:

$ stubtest --mypy-config-file=pyproject.toml --allowlist=.mypyignore --ignore-unused-allowlist scipy --concise
scipy.special.gammainc variable differs from runtime type numpy.ufunc
scipy.special.gammaincc variable differs from runtime type numpy.ufunc
scipy.special.gammainccinv variable differs from runtime type numpy.ufunc
scipy.special.gammaincinv variable differs from runtime type numpy.ufunc
scipy.special._support_alternative_backends.gammainc variable differs from runtime type numpy.ufunc
scipy.special._support_alternative_backends.gammaincc variable differs from runtime type numpy.ufunc
scipy.special._ufuncs.gammainc variable differs from runtime type numpy.ufunc
scipy.special._ufuncs.gammaincc variable differs from runtime type numpy.ufunc
scipy.special._ufuncs.gammainccinv variable differs from runtime type numpy.ufunc
scipy.special._ufuncs.gammaincinv variable differs from runtime type numpy.ufunc
scipy.stats._qmvnt.gammaincinv variable differs from runtime type numpy.ufunc

The source of these "issues" originate only from .special._ufuncs.
But because these are re-exported in several places, stubtest also reports them there.

The above example is the result of the changes in 4 lines of code, but there are 317 in total 😅

I tried suppressing these errors through the following allowlist entry:

scipy\.special\._ufuncs\..*

This indeed reduces the amount of reported errors, but stubtest still complains about the re-exports, so that's why I consider this a bug.

I am now left with two options:

• Put the entire scipy.special package in the allowlist. But this would hide all other errors, including the ones that shouldn't be ignored.
• Manually add the individual allowlist entries for these re-exports. This will amount to at least 317 entries, but it's probably closer to ~500 I'm guessing. For reference, the current allowlist counts 31 lines, which includes comments and blank newlines.

^#stublife

Gist to reproduce

No response

Severity

annoying but workaround is available

Your Environment

basedmypy 2.7.0 (compiled: yes)
Based on mypy 1.13.0

[jorenham]

See jorenham/scipy-stubs#189 for the actual code, and my current attempt at a workaround