# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1715947174 -14400
# Node ID ae01e2b10419afd5ee9c2c5b02e233a1d488ce32
# Parent  cf1e854f50e9427e6b8fdb14a59cb38eda70395c
topic: compatibility for RemotePhasesSummary.public_heads

diff --git a/hgext3rd/topic/discovery.py b/hgext3rd/topic/discovery.py
--- a/hgext3rd/topic/discovery.py
+++ b/hgext3rd/topic/discovery.py
@@ -89,9 +89,11 @@
     else:
         origremotebranchmap = remote.branchmap
     publishednode = [c.node() for c in pushop.outdatedphases]
-    publishedset = repo.revs(b'ancestors(%ln + %ln)',
-                             publishednode,
-                             pushop.remotephases.publicheads)
+    if util.safehasattr(pushop.remotephases, 'publicheads'):
+        # hg <= 6.7 (22cc679a7312)
+        publishedset = repo.revs(b'ancestors(%ln + %ln)', publishednode, pushop.remotephases.publicheads)
+    else:
+        publishedset = repo.revs(b'ancestors(%ln + %ld)', publishednode, pushop.remotephases.public_heads)
 
     publishing = (b'phases' not in remote.listkeys(b'namespaces')
                   or bool(remote.listkeys(b'phases').get(b'publishing', False)))