--- make_ps.orig	2018-11-21 18:54:56 UTC
+++ make_ps
@@ -18,7 +18,7 @@ work=./WORK
 #  For QE < 5.0 
 #. $PWDIR/example/environment_variables
 #
-. $PWDIR/environment_variables
+#. $PWDIR/environment_variables
 BIN_DIR=$PWDIR/bin
 
 mkdir $work >& /dev/null