os/modules/graphical/sway/swayidle.service.nix

{
  pkgs,
  psCfg,
  ...
}: {
  Unit = {
    Description = "Idle manager for Wayland";
    Documentation = ["man:swayidle(1)"];
    BindsTo = ["graphical-session.target"];
    Wants = ["graphical-session-pre.target"];
    After = ["graphical-session-pre.target"];
  };
  Service = {
    Type = "simple";
    ExecStart = ''
      ${pkgs.swayidle}/bin/swayidle -w \
      timeout 300 '${pkgs.swaylock-bg}/bin/swaylock-bg' \
      timeout 600 '${pkgs.sway}/bin/swaymsg "output * dpms off"' \
        resume '${pkgs.sway}/bin/swaymsg "output * dpms on"' \
      before-sleep '${pkgs.swaylock-bg}/bin/swaylock-bg'
    '';
  };
  Install = {
    WantedBy = ["sway-session.target"];
  };
}