Consider adding new plugin API for checking implicit definitions

[sobolevn]

Feature

This PR introduces a new check for mypy: we now can find incompatible __post_init__ methods in @dataclasses: https://github.com/python/mypy/pull/15503/files#diff-f96a2d6138bc6cdf2a07c4d37f6071cc25c1631afc107e277a28d5b59fc0ef04R1048-R1050

But, the thing is that for now we are using a direct call to dataclasses internal plugin, because there are no ways to do it otherwise.

Pitch

Let's discuss possible options we have to introduce a new API that can solve this problem.

CC @ilevkivskyi (original reviewer), @Tinche (as you might be interested), @JukkaL

[Tinche]

Sounds cool. Could you keep me in the loop? I'm interested.

On Sun, Jun 25, 2023 at 12:37 PM Nikita Sobolev @.***> wrote:

Feature

This PR introduces a new check for mypy: we now can find incompatible post_init methods in @dataclasses: https://github.com/python/mypy/pull/15503/files#diff-f96a2d6138bc6cdf2a07c4d37f6071cc25c1631afc107e277a28d5b59fc0ef04R1048-R1050

But, the thing is that for now we are using a direct call to dataclasses internal plugin, because there are no ways to do it otherwise.

Pitch

Let's discuss possible options we have to introduce a new API that can solve this problem.

CC @ilevkivskyi https://github.com/ilevkivskyi (original reviewer), @Tinche https://github.com/Tinche (as you might be interested), @JukkaL https://github.com/JukkaL

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