I don't know Alembic well enough to know what features of SQLAlchemy it requires, but I do know that SQLAlchemy consists of quite a bit more than just the ORM f

I don't know Alembic well enough to know what features of SQLAlchemy it requires, but I do know that SQLAlchemy consists of quite a bit more than just the ORM features. Perhaps Alembic is using it at a lower level, and can be used with any (or no) ORM layer?