--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/migration/3.21.1_Any.py	Tue Jul 28 09:25:26 2015 +0200
@@ -0,0 +1,4 @@
+# re-read ComputedRelation permissions from schema.py now that we're
+# able to serialize them
+for computedrtype in schema.iter_computed_relations():
+    sync_schema_props_perms(computedrtype.type)