AC_PROG_SED
# Python
-AM_PATH_PYTHON([3.5])
+AM_PATH_PYTHON([3.4])
# scss
AC_CHECK_PROG(SASSC, [sassc], [sassc])
+# convert from ImageMagick
+AC_CHECK_PROG(CONVERT, [convert], [convert])
+
# ------------------------------------------------------------------------------
AC_ARG_WITH([systemd],