--- a/tests/test-check-flake8.t	Tue Mar 14 14:19:11 2017 -0700
+++ b/tests/test-check-flake8.t	Tue Mar 14 14:27:43 2017 -0700
@@ -14,4 +14,5 @@
 
 run flake8 if it exists; if it doesn't, then just skip
 
-  $ type flake8 >/dev/null 2>/dev/null && hg files -0 'glob:**.py' | xargs -0 flake8
+  $ hg files -0 'set:(**.py or grep("^!#.*python")) - removed()' 2>/dev/null \
+  > | xargs -0 flake8