{ pkgs, ... }: {
  # List packages installed in system profile. To search, run:
  # $ nix search wget
  programs.auto-cpufreq = {
    enable = false;
    settings = {
      charger = {
        governor = "performance";
        turbo = "auto";
      };
      battery = {
        governor = "power-saver";
        turbo = "never";
      };
    };
  };
}