Add trio to projects list

[A5rocks]

Trio's an alternative async library that I help maintain!

Here's a couple reasons why this might help mypy primer output:

• we have a bunch of platform dependent code
• we have a bunch of async peculiar code
• we have (pending Use TypeVarTuple in our APIs python-trio/trio#2881) typevartuples in public API and have filed an issue to mypy about this! Never inferred in complex situation with variadic callable protocol python/mypy#16522

[A5rocks]

[snip] I think I misinterpreted default mode of mypy primer. Ignore!

[erictraut]

Would it make sense to add this library for pyright as well? Pyright is referenced in the pyproject.toml, so I'm guessing that pyright has been used on this code base.

[A5rocks]

We don't run pyright over the codebase (the perils of type checker compatibility) but we do have "type tests" we run both mypy and pyright over -- would that be a valuable addition?

[erictraut]

I think it would be a valuable addition regardless. Mypy_primer emits deltas, and it's useful to know about any changes to type checking outputs based on changes I make to pyright.

[hauntsaninja]

mypy_primer -k trio --old 1.6.1 indicates that most of the diff is changes introduced between 1.6.1 and mypy head. src/trio/_tests/test_exports.py:158: error: Unused "type: ignore" comment [unused-ignore] is the only one that is due to an env difference.

It's good to add pyright for trio even if pyright doesn't currently run cleanly on trio

[A5rocks]

I unfortunately don't seem to be able to run mypy_primer w/ pyright locally so I can't check if that works. (Windows has a cryptic error and WSL says npm fails...)

EDIT: fixed (I'll probably PR the fix soon enough) and:

(.venv) PS C:\Users\A5rocks\Documents\mypy_primer> mypy_primer -k trio --type-checker pyright

trio
https://github.com/python-trio/trio
----------

old
> C:\Users\A5rocks\AppData\Local\Temp\mypy_primer\projects\_trio_venv\scripts\activate.bat; C:\Users\A5rocks\AppData\Local\Temp\mypy_primer\old_pyright\pyright\packages\pyright\index.js src/trio/_tests/type_tests (0.1s)
----------

new
> C:\Users\A5rocks\AppData\Local\Temp\mypy_primer\projects\_trio_venv\scripts\activate.bat; C:\Users\A5rocks\AppData\Local\Temp\mypy_primer\new_pyright\pyright\packages\pyright\index.js src/trio/_tests/type_tests (0.1s)
==========

... Hopefully that's fine; I assume pyright would be complaining about our assert_type usage if not!

[hauntsaninja]

Thanks again!