diff -r cad62cb3c84c -r 75be14993fda tests/test-debugcommands.t
--- a/tests/test-debugcommands.t	Thu Jun 15 14:22:39 2017 -0400
+++ b/tests/test-debugcommands.t	Tue Jun 20 09:45:02 2017 -0400
@@ -142,7 +142,7 @@
   >     dst('hi ...\\nfrom h hidden in g', 1, depth=2)
   > f()
   > EOF
-  $ python debugstacktrace.py
+  $ $PYTHON debugstacktrace.py
   stacktrace at:
    debugstacktrace.py:10 in * (glob)
    debugstacktrace.py:3  in f