[wojcikstefan]

Hiya Aidan! :D

> Is this behaviour new?

Don't think so. Even the docs for SQLA v1.3 ([0]) mention it:

> native_enum – Use the database’s native ENUM type when available. Defaults to True. When False, uses VARCHAR + check constraint for all backends. The VARCHAR length can be controlled with Enum.length

[0]: https://docs.sqlalchemy.org/en/13/core/type_basics.html#sqla...

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> Or is it that alembic still doesn't pick up changes to the enum to recreate the constraint?

Off the top of my head, I believe Alembic doesn't pick it up automatically. We make a lot of manual tweaks to our auto-generated Alembic migrations and I believe adding / modifying the CHECK constrains is part of it.

[aidos]

Happy to ping you guys over the code if you want to look. It’s probably fairly tweak-able to handle your specific cases.