diff -r d02888308235 -r 0906b85bf222 contrib/import-checker.py
--- a/contrib/import-checker.py	Sun May 21 12:09:01 2017 -0700
+++ b/contrib/import-checker.py	Sun May 21 12:10:53 2017 -0700
@@ -25,7 +25,9 @@
 )
 
 # Whitelist of symbols that can be directly imported.
-directsymbols = ()
+directsymbols = (
+    'demandimport',
+)
 
 # Modules that must be aliased because they are commonly confused with
 # common variables and can create aliasing and readability issues.