# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1675608458 -14400
# Node ID a87abe69a2f85bd6b5c54e9d4e0796654f0d8daf
# Parent  e8d85d51c7b2efad48b6a8f1e23bd1a023516854
topic: branchmap already imports subsettable from repoviewutil

Even on hg <= 4.9.

But let's add a comment so that we can import from repoviewutil module directly
when we drop compatibility with 4.9.

diff -r e8d85d51c7b2 -r a87abe69a2f8 hgext3rd/topic/server.py
--- a/hgext3rd/topic/server.py	Thu Dec 15 17:07:25 2022 +0400
+++ b/hgext3rd/topic/server.py	Sun Feb 05 18:47:38 2023 +0400
@@ -3,6 +3,7 @@
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 from mercurial import (
+    branchmap,
     extensions,
     repoview,
     wireprototypes,
@@ -10,15 +11,6 @@
     wireprotov1server,
 )
 
-try:
-    from mercurial.utils import (
-        repoviewutil,
-    )
-    repoviewutil.subsettable
-except (AttributeError, ImportError):
-    # hg <= 4.9 (caebe5e7f4bd)
-    from mercurial import branchmap as repoviewutil
-
 from . import (
     common,
     constants,
@@ -102,5 +94,6 @@
 
     if FILTERNAME not in repoview.filtertable:
         repoview.filtertable[FILTERNAME] = computeunservedtopic
-        repoviewutil.subsettable[FILTERNAME] = b'immutable'
-        repoviewutil.subsettable[b'served'] = FILTERNAME
+        # hg <= 4.9 (caebe5e7f4bd)
+        branchmap.subsettable[FILTERNAME] = b'immutable'
+        branchmap.subsettable[b'served'] = FILTERNAME
diff -r e8d85d51c7b2 -r a87abe69a2f8 hgext3rd/topic/topicmap.py
--- a/hgext3rd/topic/topicmap.py	Thu Dec 15 17:07:25 2022 +0400
+++ b/hgext3rd/topic/topicmap.py	Sun Feb 05 18:47:38 2023 +0400
@@ -44,6 +44,7 @@
 def _setuptopicfilter(ui):
     """extend the filter related mapping with topic related one"""
     funcmap = repoview.filtertable
+    # hg <= 4.9 (caebe5e7f4bd)
     partialmap = branchmap.subsettable
 
     # filter level not affected by topic that we should not override