Nomarchy/core/system/hibernate.nix

{ config, lib, ... }:

let
  cfg = config.nomarchy.system.hibernation;
in
{
  config = lib.mkIf cfg.enable {
    # Wait this long after suspend before hibernating, and use the same
    # delay as the idle-action timeout so the two paths agree.
    systemd.sleep.extraConfig = ''
      HibernateDelaySec=${toString (cfg.idleMinutes * 60)}
    '';

    services.logind = {
      settings.Login = {
        HandleLidSwitch = lib.mkDefault "suspend-then-hibernate";
        HandleLidSwitchExternalPower = lib.mkDefault "suspend";
        HandlePowerKey = "hibernate";
        IdleAction = "suspend-then-hibernate";
        IdleActionSec = toString (cfg.idleMinutes * 60);
      };
    };
  };
}