diff -r 058bb3dc685f -r 0b59724cb3f2 cubicweb/skeleton/migration/precreate.py.tmpl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cubicweb/skeleton/migration/precreate.py.tmpl	Sat Jan 16 13:48:51 2016 +0100
@@ -0,0 +1,10 @@
+# -*- coding: utf-8 -*-
+# copyright %(year)s %(author)s, all rights reserved.
+# contact %(author-web-site)s -- mailto:%(author-email)s
+#
+%(long-license)s
+"""%(distname)s precreate script, executed at instance creation time or when
+the cube is added to an existing instance, before the schema is serialized.
+
+This is typically to create groups referenced by the cube'schema.
+"""