mercurial/repoview.py

--- a/mercurial/repoview.py	Tue Feb 04 14:55:04 2014 -0500
+++ b/mercurial/repoview.py	Tue Feb 04 17:13:45 2014 -0500
@@ -9,7 +9,7 @@
 import copy
 import phases
 import util
-import obsolete, revset
+import obsolete
 
 
 def hideablerevs(repo):
@@ -28,8 +28,9 @@
         cl = repo.changelog
         firsthideable = min(hideable)
         revs = cl.revs(start=firsthideable)
-        blockers = [r for r in revset._children(repo, revs, hideable)
-                      if r not in hideable]
+        tofilter = repo.revs(
+            '(%ld) and children(%ld)', list(revs), list(hideable))
+        blockers = [r for r in tofilter if r not in hideable]
         for par in repo[None].parents():
             blockers.append(par.rev())
         for bm in repo._bookmarks.values():