--backup-dir=$BAK_BASE/$LOCAL \${
lib.optionalString (part.args != null) "\n ${part.args} \\"}${
lib.optionalString (builtins.length part.exclude_from > 0) "\n --exclude-from=$EXCL_FROM \\"}${
--backup-dir=$BAK_BASE/$LOCAL \${
lib.optionalString (part.args != null) "\n ${part.args} \\"}${
lib.optionalString (builtins.length part.exclude_from > 0) "\n --exclude-from=$EXCL_FROM \\"}${