:tags: change, general
:tickets: 8983
- A new deprecation "uber warning" is now emitted at once at runtime, the
+ A new deprecation "uber warning" is now emitted at runtime the
first time any SQLAlchemy 2.0 deprecation warning would normally be
emitted, but the ``SQLALCHEMY_WARN_20`` environment variable is not set.
+ The warning emits only once at most, before setting a boolean to prevent
+ it from emitting a second time.
+
This deprecation warning intends to notify users who may not have set an
appropriate constraint in their requirements files to block against a
surprise SQLAlchemy 2.0 upgrade and also alert that the SQLAlchemy 2.0