Minor typing issue for alembic.context.configure in 1.11.0

[AlexanderPodorov]

Describe the bug
Signature of the alembic.context.configure function has changed in 1.11.0, where compare_server_default argument uses Column classes, which should be generics. This kind of definition produces type checkers warnings.

Expected behavior
No warnings reported by static type checkers

To Reproduce
E.g. using VSCode with Pyright in "strict" mode (usually it is a part of env.py):

from alembic.context import configure
# Throws: Type of "configure" is partially unknown

Versions.

• OS: MacOS
• Python: 3.11.3
• Alembic: 1.11.0
• SQLAlchemy: 2.0.13
• Database: Postgres 15
• DBAPI: asyncpg

Additional context

Have a nice day!

[zzzeek]

thanks for reporting

[sqla-tester]

Federico Caselli has proposed a fix for this issue in the main branch:

Define type for generic classes https://gerrit.sqlalchemy.org/c/sqlalchemy/alembic/+/4620