--- a/hgext/evolve.py	Sun Jun 22 12:01:11 2014 -0400
+++ b/hgext/evolve.py	Sun Jun 22 20:10:07 2014 -0400
@@ -62,7 +62,7 @@
 from mercurial import scmutil
 from mercurial import templatekw
 from mercurial.i18n import _
-from mercurial.commands import walkopts, commitopts, commitopts2
+from mercurial.commands import walkopts, commitopts, commitopts2, mergetoolopts
 from mercurial.node import nullid
 from mercurial import wireproto
 from mercurial import localrepo
@@ -1151,7 +1151,8 @@
         'do not perform actions, just print what would be done'),
     ('A', 'any', False, 'evolve any troubled changeset'),
     ('a', 'all', False, 'evolve all troubled changesets'),
-    ('c', 'continue', False, 'continue an interrupted evolution'), ],
+    ('c', 'continue', False, 'continue an interrupted evolution'),
+    ] + mergetoolopts,
     _('[OPTIONS]...'))
 def evolve(ui, repo, **opts):
     """Solve trouble in your repository
@@ -1181,6 +1182,7 @@
     anyopt = opts['any']
     allopt = opts['all']
     dryrunopt = opts['dry_run']
+    ui.setconfig('ui', 'forcemerge', opts.get('tool', ''), 'evolve')
 
     if contopt:
         if anyopt: