added hint for commands

pipelines/build.sh

@@ -44,7 +44,13 @@ coverage html
 # zip -q -r htmlcov.zip htmlcov
 
 echo "===================== importability ====================="
+echo " > try 'from $JOB_NAME.top_level_interface import *'"
 python -c "from $JOB_NAME.top_level_interface import *"
+if [ "$?" != 0 ]; then
+  echo "Success!"
+else
+  echo "Failed!"
+fi
 
 echo "===================== POST BUILD BELOW ====================="