pkgs: with pkgs.lib;
rec {
# Escape a path according to the systemd rules, e.g. /dev/xyzzy
# becomes dev-xyzzy. FIXME: slow.
escapeSystemdPath = s:
replaceChars ["/" "-" " "] ["-" "\\x2d" "\\x20"]
(if hasPrefix "/" s then substring 1 (stringLength s) s else s);
}