# HG changeset patch
# User Anton Shestakov <av6@dwimlabs.net>
# Date 1644048492 -10800
# Node ID cd313b2e57fbad8b39bc748bfd82b9ab90bcee6d
# Parent  5e14782908e4bcb6bf7caa7e3edc779c6fa5e8e4
evolve: enforcesinglehead() in 6.1 covers all our needs

The only difference this function has in core and in evolve is a call to
_filter_obsolete_heads(), but since now head computation in core is
obsolescence-aware, there's no need to filter heads twice. And with that the
only reason for calling evolve's version of enforcesinglehead() is gone.

diff -r 5e14782908e4 -r cd313b2e57fb hgext3rd/evolve/headchecking.py
--- a/hgext3rd/evolve/headchecking.py	Mon Dec 27 18:40:04 2021 +0300
+++ b/hgext3rd/evolve/headchecking.py	Sat Feb 05 11:08:12 2022 +0300
@@ -25,7 +25,10 @@
 @eh.uisetup
 def uisetup(ui):
     extensions.wrapfunction(discovery, '_postprocessobsolete', _postprocessobsolete)
-    extensions.wrapfunction(scmutil, 'enforcesinglehead', enforcesinglehead)
+    code = scmutil.filteredhash.__code__
+    if r'needobsolete' not in code.co_varnames[:code.co_argcount]:
+        # hg <= 6.0 (053a5bf508da)
+        extensions.wrapfunction(scmutil, 'enforcesinglehead', enforcesinglehead)
 
 def branchinfo(pushop, repo, node):
     return repo[node].branch()