4.7.0: new implementation of TypedDict breaks pypy-3.7 and pypy-3.8 #258
Description
See e.g. a CI run on black PR psf/black#3757: https://github.com/psf/black/actions/runs/5420281960/jobs/9854265747?pr=3757
I'm inclined to think this is a bug in PyPy-3.7 (and it looks like it was fixed in PyPy-3.8). It looks like PyPy-3.7 isn't taking any notice of the __mro_entries__ method we set on TypedDict. But it might be worth explicitly calling out in our docs that the latest version isn't compatible with PyPy-3.7?