Weird conflict between typing-extensions 4.12.1, xarray, dirty_equals on Python 3.8

[soxofaan]

FYI: I just created this ticket samuelcolvin/dirty-equals#99 against the dirty-equals project about weird import breakage when combining xarray, dirty_equals and recently released typing-extensions 4.12.1 on Python 3.8.

On second thought it might be better to file this against the typing-extensions project

[AlexWaygood]

We fixed this in 53bcdde... @JelleZijlstra, maybe we should do a patch release?

(Do I have the power to do that now? I didn't with the old workflow, but maybe I can after 63d8277... If so, I'm happy to do it.)

[JelleZijlstra]

Yes, you should be able to do a patch release, go ahead!