nix/modules/system/hardware/laptop.nix

{ ... }:

{
  services.auto-cpufreq.enable = true;
  services.auto-cpufreq.settings = {
    battery = {
      governor = "powersave";
      turbo = "never";
    };
    charger = {
      governor = "performance";
      turbo = "auto";
    };
  };

  services.power-profiles-daemon.enable = true;

  boot.extraModprobeConfig = ''
    options snd_hda_intel power_save=0
  '';

  # powerManagement.powertop.enable = true;
}