A while back, I posted a draft proposal for a new typing construct called `dataclass_transform`. Here's a link to the full spec: https://github.com/microsoft/pyright/blob/main/specs/dataclass_transforms.md I released a reference implementation in pyright. A couple of popular libraries (`attrs` and `pydantic`) have provisionally adopted it. Several other use cases for it have also been proposed, including support for dataclass decorator aliases, discussed in this mypy issue thread: https://github.com/python/mypy/issues/5383. I'm interested in opinions from the broader typing community. Is there enough interest to justify a formal PEP and moving it through the standards process? I'd be happy to present the proposal in the next Typing Meetup if there are available slots. -- Eric Traut Contributor to Pyright & Pylance Microsoft