Add back origin_is_union()

Viicos · Viicos · commit 713c1bd2c9ea · 2025-02-28T19:14:01.000+01:00
pydantic-settings relies on it.
diff --git a/pydantic/_internal/_typing_extra.py b/pydantic/_internal/_typing_extra.py
@@ -13,6 +13,7 @@
 import typing_extensions
 from typing_extensions import deprecated, get_args, get_origin
 from typing_inspection import typing_objects
+from typing_inspection.introspection import is_union_origin
 
 from pydantic.version import version_short
 
@@ -182,6 +183,11 @@ def is_namedtuple(tp: Any, /) -> bool:
     return lenient_issubclass(tp, tuple) and hasattr(tp, '_fields')
 
 
+# TODO In 2.12, delete this export. It is currently defined only to not break
+# pydantic-settings which relies on it:
+origin_is_union = is_union_origin
+
+
 def is_generic_alias(tp: Any, /) -> bool:
     return isinstance(tp, (types.GenericAlias, typing._GenericAlias))  # pyright: ignore[reportAttributeAccessIssue]
 
