diff --git a/mercurial/dirstate.py b/mercurial/dirstate.py
--- a/mercurial/dirstate.py
+++ b/mercurial/dirstate.py
@@ -1115,11 +1115,6 @@
         elif not match.always():
             # Matchers have yet to be implemented
             use_rust = False
-        # We don't yet have a mechanism for extensions
-        elif sparse.enabled:
-            use_rust = False
-        elif not getattr(self, "_fsmonitordisable", True):
-            use_rust = False
 
         if use_rust:
             (