Index: scan.py
--- scan.py.orig
+++ scan.py
@@ -1917,7 +1917,7 @@ try:
             elif d == 'print':
                 hp_print = utils.which("hp-print", True)
                 if not hp_print:
-                    hp_print = 'python ./print.py'
+                    hp_print = '${MODPY_BIN} ./print.py'
                  
                 if dest_printer is not None:
                    cmd = '%s -p %s %s &' % (hp_print, dest_printer, output)