hgext/narrow/__init__.py

--- a/hgext/narrow/__init__.py	Sat Aug 08 15:48:17 2020 +0530
+++ b/hgext/narrow/__init__.py	Sat Aug 08 16:24:12 2020 +0530
@@ -11,9 +11,9 @@
 from mercurial import (
     localrepo,
     registrar,
+    requirements,
 )
 
-from mercurial.interfaces import repository
 
 from . import (
     narrowbundle2,
@@ -52,7 +52,7 @@
 
 
 def featuresetup(ui, features):
-    features.add(repository.NARROW_REQUIREMENT)
+    features.add(requirements.NARROW_REQUIREMENT)
 
 
 def uisetup(ui):
@@ -69,7 +69,7 @@
         return
 
     repo.ui.setconfig(b'experimental', b'narrow', True, b'narrow-ext')
-    if repository.NARROW_REQUIREMENT in repo.requirements:
+    if requirements.NARROW_REQUIREMENT in repo.requirements:
         narrowrepo.wraprepo(repo)
         narrowwirepeer.reposetup(repo)