depot/nixos/modules/system/boot/shutdown.nix
Luke Granger-Brown 57725ef3ec Squashed 'third_party/nixpkgs/' content from commit 76612b17c0ce
git-subtree-dir: third_party/nixpkgs
git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
2024-11-10 23:59:47 +00:00

28 lines
703 B
Nix

{ config, lib, pkgs, ... }:
with lib;
{
# This unit saves the value of the system clock to the hardware
# clock on shutdown.
systemd.services.save-hwclock =
{ description = "Save Hardware Clock";
wantedBy = [ "shutdown.target" ];
unitConfig = {
DefaultDependencies = false;
ConditionPathExists = "/dev/rtc";
ConditionPathIsReadWrite = "/etc/";
};
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.util-linux}/sbin/hwclock --systohc ${if config.time.hardwareClockInLocalTime then "--localtime" else "--utc"}";
};
};
boot.kernel.sysctl."kernel.poweroff_cmd" = "${config.systemd.package}/sbin/poweroff";
}