Feature Request Type

• Core functionality
• Alteration (enhancement/optimization) of existing feature(s)
• New behavior

Description

It seems like python (typing) union types don't work with the lazy annotations documented here: https://strawberry.rocks/docs/types/lazy.
If i have two types that need to import from each other: Kennel and Pet(union of Cat and Dog) . I will get the following error if I try to do a lazy annotation on the union type.

# pets.schema
from .pet_stores.schema import PetStore

@strawberry.type
class Cat:
  pet_store: PetStore

@strawberry.type
class Dog:
  pet_store: PetStore

Pet = Union[Cat, Dog]


# pet_stores.schema
from .pets import Pet

if TYPE_CHECKING:
    from .pets.schema import Pet

@strawberry.type
class Kennel
  pet: Annotated["Pet", strawberry.lazy(".pets.schema")]

throws:

TypeError: PetStore fields cannot be resolved. Unexpected type 'typing.Union[api_graphql.dog.schema.Dog, api_graphql.cat.schema.Cat]'

As mentioned by @patrick91 you work around this issue by swapping typing's Union with strawberry.union.

# Pet = Union[Cat, Dog]
Pet = strawberry.union("Pet", (Cat, Dog))

Discord convo: https://discord.com/channels/689806334337482765/1036814233234579526/1036814233234579526