refactor: guard non-runtime types with TYPE_CHECKING

python/ngen_conf/src/ngen/config/path_pair/_utils.py

@@ -1,7 +1,10 @@
 from __future__ import annotations
 
 import sys
-from pathlib import Path
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from pathlib import Path
 
 
 def path_unlink_37(p: Path, missing_ok: bool):

python/ngen_conf/src/ngen/config/path_pair/common.py

@@ -1,11 +1,13 @@
 from __future__ import annotations
 
 from pydantic import BaseModel
-from pathlib import Path
 
 from .protocol import Deserializer
 
-from typing import TypeVar
+from typing import TypeVar, TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from pathlib import Path
 
 M = TypeVar("M", bound=BaseModel)
 

python/ngen_conf/src/ngen/config/path_pair/protocol.py

@@ -7,9 +7,12 @@
 else:
     from typing_extensions import Protocol
 
-from pathlib import Path
 
 from .typing import T, S
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from pathlib import Path
 
 
 class Writer(Protocol):

python/ngen_init_config/src/ngen/init_config/deserializer.py

@@ -1,7 +1,5 @@
 from __future__ import annotations
 
-from pathlib import Path
-
 from .core import Base
 from .utils import merge_class_attr
 from ._deserializers import (
@@ -12,7 +10,11 @@
     from_toml_str,
 )
 
-from typing_extensions import Self
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from typing_extensions import Self
+    from pathlib import Path
 
 
 class IniDeserializer(Base):

python/ngen_init_config/src/ngen/init_config/serializer.py

@@ -1,9 +1,12 @@
 from __future__ import annotations
 
 import os
-import pathlib
 
 from . import core, format_serializers, utils
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    import pathlib
 
 
 class IniSerializer(core.Base):

python/ngen_init_config/src/ngen/init_config/utils.py

@@ -1,10 +1,13 @@
 from __future__ import annotations
 
 import importlib
-from typing import Any
-from types import ModuleType
+from typing import TYPE_CHECKING
 from copy import deepcopy
 
+if TYPE_CHECKING:
+    from typing import Any
+    from types import ModuleType
+
 
 __SENTINEL = object()
 __MERGE_SENTINEL = object()