The sqlalchemy-stubs package is an alternative to this package and also includes a mypy plugin for more precise types.

How much of an "alternative" is types-SQLAlchemy to sqlalchemy-stubs? Is the latter too reliant on mypy-plugin? Or is the former only there so we could reference it in Flask-SQLAlchemy (which itself is referenced in Flask-Migrate) ?
Because if we can just drop both SQLAlchemy (in favor of sqlalchemy-stubs/sqlalchemy2-stubs) and Flask-Migrate (already planned), it would be a lot easier.

Hmm, I'd prefer us to find another solution here :/

It feels really weird for us to declare a dependency on mypy so that we can provide accurate stubs for a directory that only exists to provide a mypy plugin for a completely separate set of SQLAlchemy stubs.

Come to think of it, weird that mypy_test can't find mypy. We shouldn't need to depend on it at all. I guess it's because of the virtual environment being created.

This should be better now :)

Just as a discussion point. Since SQLAlchemy 2.0 is typed. And sqlalchemy2-stubs is actively being developed for 1.4 by the same organization (replacing dropbox's sqlalchemy-stub). And we can now reference external stubs.
Does typeshed plan on continuing to maintain types-SQLAlchemy once those come out of pre-release?

sqlalchemy2-stubs has some shortcomings, mostly around the fact that it requires a mypy plugin. I had some more plans with our stubs, but we will most likely drop the stubs some point after SQLAlchemy 2 comes out, whenever that is. That said, I'm opposed to depend on sqlalchemy2-stubs.

@srittau, do you think we actually need the ext/mypy directory? It feels weird having stubs for a mypy plugin that's only there at runtime in order to support another set of stubs. Could we just delete the directory?

@AlexWaygood Sure. I think we have too many internal modules in our stubs anyway.

@AlexWaygood Sure. I think we have too many internal modules in our stubs anyway.

Gotta love fixing things by just removing code !

@AlexWaygood Sure. I think we have too many internal modules in our stubs anyway.

Gotta love fixing things by just removing code !

Fixed a bug by removing the feature ;)

According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉