mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-24 02:46:38 +00:00
29 lines
1 KiB
Nix
29 lines
1 KiB
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
|
|
# FIXME: it's incorrect to simply use hasPrefix here: "/dev/a" is not a parent of "/dev/ab"
|
|
fsBefore = a: b: ((any (x: elem x [ "bind" "move" ]) b.options) && (a.mountPoint == b.device))
|
|
|| (hasPrefix 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;
|
|
}
|