--- a/mercurial/admin/chainsaw.py	Mon Sep 16 15:36:44 2024 +0200
+++ b/mercurial/admin/chainsaw.py	Thu Sep 12 16:27:58 2024 -0400
@@ -19,6 +19,8 @@
 variable (see :hg:`help scripting`).
 """
 
+from __future__ import annotations
+
 import shutil
 
 from ..i18n import _