{ pkgs, config, lib, system, ... }:
let
  cfg = config.grimmShared;
  perf_policy = lib.optional (lib.systems.elaborate system).isx86 config.boot.kernelPackages.x86_energy_perf_policy;
in
{
  config = with cfg; lib.mkIf (enable && laptop_hardware.enable) {
    environment.systemPackages = with pkgs; [
      acpi
      powertop
    ] ++ lib.optionals graphical [
      tlpui
    ] ++ perf_policy;

    powerManagement.scsiLinkPolicy = lib.mkIf (!config.services.tlp.enable) "min_power";
    powerManagement.cpuFreqGovernor = lib.mkDefault "normal";

    services.power-profiles-daemon.enable = false;
    services.upower.enable = true;
    boot.extraModulePackages = perf_policy;

    services.tlp = {
      enable = true;
      settings = {
        USB_AUTOSUSPEND = 1;
        USB_EXCLUDE_BTUSB = 1;
        USB_EXCLUDE_PHONE = 1;
        SOUND_POWER_SAVE_ON_AC = 0;
        SOUND_POWER_SAVE_ON_BAT = 1;
        SATA_LINKPWR_ON_AC = "max_performance";
        SATA_LINKPWR_ON_BAT = "min_power";
        MAX_LOST_WORK_SECS_ON_BAT = 15;
        CPU_ENERGY_PERF_POLICY_ON_AC = "performance";
        CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
        CPU_BOOST_ON_AC = 1;
        CPU_BOOST_ON_BAT = 0;
        RUNTIME_PM_ON_AC = "on";
        RUNTIME_PM_ON_BAT = "auto";
      };
    };
  };
}