Python 3.14: implicitly eager Struct annotations

src/lmstudio/schemas.py

@@ -90,6 +90,12 @@ class BaseModel(Struct, omit_defaults=True, kw_only=True):
     # Allows structured predictions using a `pydantic.BaseModel` inspired format,
     # even in applications that don't otherwise depend on Pydantic
 
+    def __init_subclass__(cls, *args: Any, **kwds: Any) -> None:
+        # Eagerly populate annotations on Python 3.14+
+        # Workaround for https://github.com/lmstudio-ai/lmstudio-python/issues/153
+        cls.__annotations__
+        super().__init_subclass__()
+
     @classmethod
     def model_json_schema(cls) -> DictSchema:
         """Returns JSON Schema dict describing the format of this class."""
@@ -186,6 +192,12 @@ class LMStudioStruct(Generic[TWireFormat], Struct, omit_defaults=True, kw_only=T
     # * Allow non-default fields after default fields
     #
 
+    def __init_subclass__(cls, *args: Any, **kwds: Any) -> None:
+        # Eagerly populate annotations on Python 3.14+
+        # Workaround for https://github.com/lmstudio-ai/lmstudio-python/issues/153
+        cls.__annotations__
+        super().__init_subclass__(*args, **kwds)
+
     # This is actually defined in msgspec.Struct,
     # but is missing from the published type stubs:
     # https://github.com/jcrist/msgspec/pull/813

tests/support/__init__.py

@@ -1,8 +1,5 @@
 """Common test support interfaces and expected value definitions."""
 
-# Work around https://github.com/jcrist/msgspec/issues/847
-from __future__ import annotations
-
 import logging
 import sys
 

tests/test_schemas.py

@@ -1,8 +1,5 @@
 """Test schema processing support."""
 
-# Work around https://github.com/jcrist/msgspec/issues/847
-from __future__ import annotations
-
 from typing import Any, Type
 
 import pytest