case $THIS_SUB_DEPENDS in
   (HTTP) message "HTTP support requested, forcing it" &&
          list_remove LIBXML2_OPTS --without-http &&
          list_add    LIBXML2_OPTS --with-http
          ;;
    (FTP) message "FTP support requested, forcing it" &&
          list_remove LIBXML2_OPTS --without-ftp &&
          list_add    LIBXML2_OPTS --with-ftp
          ;;
 (PYTHON) message "python bindings requested, forcing them" &&
          depends python3 "--with-python";;
      (*) message "${PROBLEM_COLOR}bogus sub_depends: $SPELL $THIS_SUB_DEPENDS${DEFAULT_COLOR}" &&
          return 1;;
esac
