Shantanu

That sounds believable (and https://github.com/python/mypy/pull/11143 was certainly the most problematic change in 0.971). You could confirm the hypothesis by checking the output when using `--no-silence-site-packages`

Thanks for running that! The history here is a little complicated. Just to be sure of what's going on, can you provide the results of running on the following commits:...

https://github.com/mesonbuild/meson/pull/10810#discussion_r970175460 sounds like there may be some mypy cache issue. This means your bisection results may be confounded, e.g. maybe changing imports just invalidated the cache. Perhaps try bisecting again...

Yeah, a `meta` or `project` label is a good idea!

@rchl I think you may be running into a regression in 0.971 that causes mypy to spuriously complain about MYPYPATH stuff. This regression was caused by #11143. See https://github.com/python/mypy/issues/13214 for...

Apologies that your time got wasted on this!

There are some more use cases outlined in https://github.com/python-poetry/poetry/issues/697

Yup, I definitely agree with sdispater on the the principle of the thing. The one thing I'll note is that it's easier for poetry to be principled than pip: currently...

Sure thing! Sounds good and can do. I'll wait to hear back from Paul to make sure he's onboard with adding asserts, just so I don't end up wasting my...

Okay, I've gotten rid of the checked properties. The one exception is that the pre-existing `self.specifier` is functionally doing the same things the checked properties were (it's used in a...