MAINT: Move CoreSchema import to TYPE_CHECKING block

src/fmu/dataio/datastructure/meta/content.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import warnings
-from typing import Any, Dict, List, Literal, Optional, Union
+from typing import TYPE_CHECKING, Any, Dict, List, Literal, Optional, Union
 
 from pydantic import (
     AwareDatetime,
@@ -13,11 +13,13 @@
     field_validator,
     model_validator,
 )
-from pydantic_core import CoreSchema
 from typing_extensions import Annotated
 
 from . import enums, specification
 
+if TYPE_CHECKING:
+    from pydantic_core import CoreSchema
+
 
 class Timestamp(BaseModel):
     """A timestamp object contains a datetime representation of the time

src/fmu/dataio/datastructure/meta/meta.py

@@ -2,7 +2,7 @@
 
 from collections import ChainMap
 from pathlib import Path
-from typing import Dict, List, Literal, Optional, TypeVar, Union
+from typing import TYPE_CHECKING, Dict, List, Literal, Optional, TypeVar, Union
 from uuid import UUID
 
 from pydantic import (
@@ -14,11 +14,13 @@
     RootModel,
     model_validator,
 )
-from pydantic_core import CoreSchema
 from typing_extensions import Annotated
 
 from . import content, enums
 
+if TYPE_CHECKING:
+    from pydantic_core import CoreSchema
+
 T = TypeVar("T", Dict, List, object)