mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 21:50:55 +00:00
28 lines
971 B
Nix
28 lines
971 B
Nix
pkgs: with pkgs.lib;
|
|
|
|
rec {
|
|
|
|
# Check whenever fileSystem is needed for boot
|
|
fsNeededForBoot = fs: fs.neededForBoot
|
|
|| elem fs.mountPoint [ "/" "/nix" "/nix/store" "/var" "/var/log" "/var/lib" "/etc" ];
|
|
|
|
# Check whenever `b` depends on `a` as a fileSystem
|
|
fsBefore = a: b: a.mountPoint == b.device
|
|
|| hasPrefix "${a.mountPoint}${optionalString (!(hasSuffix "/" a.mountPoint)) "/"}" b.mountPoint;
|
|
|
|
# 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;
|
|
}
|