I have a base type definition that I use in many models: Alpha = Annotated[str, Field(pattern=r'[A-Za-z]')] I want to create additional specialised types based on this type, for example by adding a max_length constraint. I want to do this in a declarative way, ideally using Annotated as the type definitions will be auto-generated into a module for import. This doesn't work, because it produces a nested annotation, but I'd like something like it: ShortAlpha = Annotated[Alpha, Field(max_length=5)] is there a way to extend Annotated type definitions without having to explicitly dig around in the original type's internals? Continue reading...
