diff -r e0e4b5ad6cb9 -r 6501cf9c29f9 components/python/virtualenv/Makefile
--- a/components/python/virtualenv/Makefile	Thu May 21 08:56:12 2015 -0700
+++ b/components/python/virtualenv/Makefile	Thu May 21 13:48:49 2015 -0700
@@ -50,6 +50,8 @@
 # Virtualenv has tests, but only in the source repo; not in the tarballs.
 test:		$(NO_TESTS)
 
+system-test:    $(NO_TESTS)
+
 REQUIRED_PACKAGES += library/python/setuptools-26
 REQUIRED_PACKAGES += library/python/setuptools-27
 REQUIRED_PACKAGES += library/python/setuptools-34