Fix support for python 3.10 #5662

src/ifc4d/ifc4d/common.py

@@ -3,7 +3,8 @@ import ifcopenshell
 import ifcopenshell.api
 import ifcopenshell.util.date
 from datetime import datetime, timedelta, date
-from typing import Union, Any, TypedDict, NotRequired
+from typing import Union, Any, TypedDict
+from typing_extensions import NotRequired
 
 
 class WorkSlot(TypedDict):

src/ifc4d/pyproject.toml

@@ -17,6 +17,7 @@ classifiers = [
 ]
 dependencies = [
     "ifcopenshell",
+    "typing-extensions",
 ]
 
 [project.urls]