{ modules, den, ... }:
{
  modules.tdp = settings: {
    nixos =
      { pkgs, ... }:
      let
        batt-tdp = pkgs.writeShellScript "batt-cpu-tdp" ''
          					${pkgs.powercap}/bin/powercap-set intel-rapl -z 0 -c 0 -l ${
                 toString (settings.batt.cpu.long-term * 1000000)
               }
          					${pkgs.powercap}/bin/powercap-set intel-rapl -z 0 -c 0 -l ${
                 toString (settings.batt.cpu.short-term * 1000000)
               }
        '';
        ac-tdp = pkgs.writeShellScript "ac-cpu-tdp" ''
          					${pkgs.powercap}/bin/powercap-set intel-rapl -z 0 -c 0 -l ${
                 toString (settings.ac.cpu.long-term * 1000000)
               }
          					${pkgs.powercap}/bin/powercap-set intel-rapl -z 0 -c 0 -l ${
                 toString (settings.ac.cpu.short-term * 1000000)
               }
        '';
      in
      {
        systemd.services.tdp-on-batt = {
          enable = true;
          before = [ "battery.target" ];

          serviceConfig = {
            Type = "oneshot";
            ExecStart = "${batt-tdp}";
            RemainAfterExit = true;
          };
          wantedBy = [ "battery.target" ];
          partOf = [ "battery.target" ];
        };
        systemd.services.tdp-on-ac = {
          enable = true;
          before = [ "ac.target" ];

          serviceConfig = {
            Type = "oneshot";
            ExecStart = "${ac-tdp}";
            RemainAfterExit = true;
          };
          wantedBy = [ "ac.target" ];
          partOf = [ "ac.target" ];
        };
      };
  };
}