--- a/mercurial/interfaces/util.py	Mon Sep 16 15:36:38 2024 +0200
+++ b/mercurial/interfaces/util.py	Mon Sep 16 15:36:44 2024 +0200
@@ -9,6 +9,7 @@
 # bookkeeping for declaring interfaces. So, we use stubs for various
 # zope.interface primitives unless instructed otherwise.
 
+from __future__ import annotations
 
 from .. import encoding