From f00ee0cc139f5559c9c8d1f263f79c240ae62a74 Mon Sep 17 00:00:00 2001
From: Duncan Macleod <macleoddm@cardiff.ac.uk>
Date: Fri, 4 Apr 2025 10:52:44 +0100
Subject: [PATCH] Move use of typing_extensions into TYPE_CHECKING block

so that typing-extensions is not required at runtime
---
 kombu/asynchronous/semaphore.py | 15 +++++++--------
 requirements/default.txt        |  1 -
 requirements/pkgutils.txt       |  1 +
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/kombu/asynchronous/semaphore.py b/kombu/asynchronous/semaphore.py
index 940e6d860..2936459e6 100644
--- a/kombu/asynchronous/semaphore.py
+++ b/kombu/asynchronous/semaphore.py
@@ -3,21 +3,20 @@
 
 import sys
 from collections import deque
-from typing import TYPE_CHECKING, Callable, Deque
-
-if sys.version_info < (3, 10):
-    from typing_extensions import ParamSpec
-else:
-    from typing import ParamSpec
+from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
     from types import TracebackType
+    from typing import Callable, Deque
+    if sys.version_info < (3, 10):
+        from typing_extensions import ParamSpec
+    else:
+        from typing import ParamSpec
 
+    P = ParamSpec("P")
 
 __all__ = ('DummyLock', 'LaxBoundedSemaphore')
 
-P = ParamSpec("P")
-
 
 class LaxBoundedSemaphore:
     """Asynchronous Bounded Semaphore.
diff --git a/requirements/default.txt b/requirements/default.txt
index 1ad71d4fc..4a430ee56 100644
--- a/requirements/default.txt
+++ b/requirements/default.txt
@@ -1,4 +1,3 @@
-typing_extensions==4.12.2; python_version<"3.10"
 amqp>=5.1.1,<6.0.0
 vine==5.1.0
 backports.zoneinfo[tzdata]>=0.2.1; python_version<"3.9"
diff --git a/requirements/pkgutils.txt b/requirements/pkgutils.txt
index 4a43eb047..8878c1ae4 100644
--- a/requirements/pkgutils.txt
+++ b/requirements/pkgutils.txt
@@ -6,3 +6,4 @@ sphinx2rst>=1.0
 bumpversion==0.6.0
 pydocstyle==6.3.0
 mypy==1.14.1
+typing_extensions==4.12.2; python_version<"3.10"