diff -r b1e3f609bf45 -r fec79a3f250f mercurial/configitems.py
--- a/mercurial/configitems.py	Mon Oct 16 17:14:32 2017 +0200
+++ b/mercurial/configitems.py	Mon Oct 16 17:14:47 2017 +0200
@@ -349,6 +349,15 @@
     default=list,
     alias=[('experimental', 'stabilization')],
 )
+coreconfigitem('experimental', 'evolution.allowunstable',
+    default=None,
+)
+coreconfigitem('experimental', 'evolution.createmarkers',
+    default=None,
+)
+coreconfigitem('experimental', 'evolution.exchange',
+    default=None,
+)
 coreconfigitem('experimental', 'evolution.bundle-obsmarker',
     default=False,
     alias=[('experimental', 'stabilization.bundle-obsmarker')],