diff -r 5d092194ac37 -r f0ae403bf704 mercurial/configitems.py
--- a/mercurial/configitems.py	Tue Jan 17 14:53:18 2023 +0100
+++ b/mercurial/configitems.py	Mon Jan 23 17:21:14 2023 +0100
@@ -1473,22 +1473,10 @@
     b'usestore',
     default=True,
 )
-
-
-def _persistent_nodemap_default():
-    """compute `use-persistent-nodemap` default value
-
-    The feature is disabled unless a fast implementation is available.
-    """
-    from . import policy
-
-    return policy.importrust('revlog') is not None
-
-
 coreconfigitem(
     b'format',
     b'use-persistent-nodemap',
-    default=_persistent_nodemap_default,
+    default=dynamicdefault,
 )
 coreconfigitem(
     b'format',