--- a/mercurial/revlog.py	Mon Sep 16 15:36:38 2024 +0200
+++ b/mercurial/revlog.py	Mon Sep 16 15:36:44 2024 +0200
@@ -12,6 +12,7 @@
 and O(changes) merge between branches.
 """
 
+from __future__ import annotations
 
 import binascii
 import collections