--- a/tests/test-eol.t	Thu Jun 15 14:22:39 2017 -0400
+++ b/tests/test-eol.t	Tue Jun 20 09:45:02 2017 -0400
@@ -69,7 +69,7 @@
   >     echo '% a.txt'
   >     cat a.txt
   >     hg diff
-  >     python ../switch-eol.py $1 a.txt
+  >     $PYTHON ../switch-eol.py $1 a.txt
   >     echo '% hg diff only reports a single changed line:'
   >     hg diff
   >     echo "% reverting back to $1 format"