# HG changeset patch
# User Pierre-Yves David <pierre-yves.david@octobus.net>
# Date 2021-12-07 10:36:16
# Node ID d46cf894f586641185797adcec6bf1aac307f35e
# Parent  6e4999cb085e5597e1dd19cda42b1b21664876cf

touches_wc_requirements

diff --git a/mercurial/upgrade_utils/actions.py b/mercurial/upgrade_utils/actions.py
--- a/mercurial/upgrade_utils/actions.py
+++ b/mercurial/upgrade_utils/actions.py
@@ -94,6 +94,9 @@ class improvement(object):
     # Whether this improvement changes repository requirements
     touches_requirements = True
 
+    # Whether this improvement changes working copy requirements
+    touches_wc_requirements = True
+
     # Whether this improvement touches the dirstate
     touches_dirstate = False
 
@@ -188,7 +191,8 @@ class dirstatev2(requirementformatvarian
     touches_filelogs = False
     touches_manifests = False
     touches_changelog = False
-    touches_requirements = True
+    touches_requirements = False
+    touches_wc_requirements = True
     touches_dirstate = True
 
 
@@ -719,10 +723,24 @@ class UpgradeOperation(object):
         return set([a.name for a in self.upgrade_actions])
 
     @property
+    def wc_requirements_only(self):
+        # does the operation only touches repository requirement
+        return (
+            self.touches_wc_requirements
+            and not self.touches_requirements
+            and not self.touches_filelogs
+            and not self.touches_manifests
+            and not self.touches_changelog
+            and not self.touches_dirstate
+        )
+
+    @property
     def requirements_only(self):
         # does the operation only touches repository requirement
         return (
-            self.touches_requirements
+            (self.touches_requirements
+             or self.touches_wc_requirements
+            )
             and not self.touches_filelogs
             and not self.touches_manifests
             and not self.touches_changelog
@@ -769,6 +787,19 @@ class UpgradeOperation(object):
         return False
 
     @property
+    def touches_wc_requirements(self):
+        for a in self.upgrade_actions:
+            # optimisations are used to re-process revlogs and does not result
+            # in a requirement being added or removed
+            if a.type == OPTIMISATION:
+                pass
+            elif a.touches_wc_requirements:
+                return True
+        for a in self.removed_actions:
+            if a.touches_wc_requirements:
+                return True
+
+    @property
     def touches_requirements(self):
         for a in self.upgrade_actions:
             # optimisations are used to re-process revlogs and does not result