Release 0.920 planning

[ilevkivskyi]

I will be releasing mypy 0.920 soon. The release branch will be cut at a7d6e68. Please post here any PRs that need to be merged and cherry-picked.

[ilevkivskyi]

This is the release branch https://github.com/python/mypy/tree/release-0.920

[ilevkivskyi]

#11168 needs to be CP'ed (done).

[zevisert]

❤️ I would like to see 6eafc5e included, which I think -- just judging by the dates -- should already be. I was surprised to find today, that there's no release already bringing the fix for tuple[T, ...] raising Unexpected "..." for ^3.9

[hauntsaninja]

That will be included! :-) The release branch is linked above / the cutoff date from master is Sept 20

[Zac-HD]

It's well after Sept 20, but I'd love to see 9aaeef5 in the next release - mypy xor torchtyping is a painful dilemma.

[mr-c]

@ilevkivskyi Will there be an official release candidate for 0.920 that I can test in my role as the Debian maintainer of https://packages.debian.org/sid/mypy or shall I make my own snapshot of https://github.com/python/mypy/tree/release-0.920 for testing?

[mr-c]

I made a snapshot of febec71
from https://github.com/python/mypy/tree/release-0.920

and I get this error

MYPY_USE_MYPYC=1 dh_auto_build
	pybuild --build -i python{version} -p 3.9
I: pybuild base:232: /usr/bin/python3 setup.py build 
Parsed and typechecked in 38.693s
Compiled to C in 0.000s
mypy/modulefinder.py:440: error: Argument 1 to "load" has incompatible type "TextIO"; expected "BinaryIO"
mypy/config_parser.py:172: error: Argument 1 to "load" has incompatible type "TextIO"; expected "BinaryIO"

[emmatyping]

@mr-c That is almost certainly related to #10893, but I'm not sure why you'd be getting that error as the newest commit in that branch pins tomli.

[mr-c]

@mr-c That is almost certainly related to #10893, but I'm not sure why you'd be getting that error as the newest commit in that branch pins tomli.

Thanks! I had packaged the latest release of tomli v1.2.1 in Debian, so that's probably why I had that problem https://tracker.debian.org/pkg/python-tomli ; I'll cherry-pick that PR into a local patch for my preparatory packaging of mypy 0.920

[emmatyping]

Also while I'm thinking about it we should probably mention #9275 being on the horizon in the 0.920 release notes.

[ilevkivskyi]

@Zac-HD sure, I will CP tomorrow.

@mr-c We usually don't do RC, but I can let you know few days before the actual release so you can test the source/binaries.