3
0
Fork 0
forked from mirrors/nixpkgs
nixpkgs/nixos/lib/utils.nix
zimbatm 6df0bff908 nixos: throw an error on invalid shell package
All shell packages must export the shellPath passthru
2016-07-04 15:12:27 +01:00

20 lines
559 B
Nix

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);
# Returns a system path for a given shell package
toShellPath = shell:
if types.shellPackage.check shell then
"/run/current-system/sw${shell.shellPath}"
else if types.package.check shell then
throw "${shell} is not a shell package"
else
shell;
}