nichts/modules/system/hardware/power.nix

{
  config,
  inputs,
  lib,
  pkgs,
  ...
}: let
  inherit (lib.modules) mkDefault;
in {
  imports = [
    inputs.superfreq.nixosModules.default
  ];
  config = {
    environment.systemPackages = builtins.attrValues {
      inherit
        (pkgs)
        acpi
        powertop
        ;
    };

    boot = {
      kernelModules = ["acpi_call"];
      extraModulePackages = with config.boot.kernelPackages; [
        acpi_call
        cpupower
      ];
    };

    hardware.acpilight.enable = false;

    services.superfreq = {
      enable = true;
      # sample config from https://github.com/NotAShelf/superfreq#sample-configuration
      settings = {
        charger = {
          # CPU governor to use
          governor = "performance";
          # Turbo boost setting: "always", "auto", or "never"
          turbo = "auto";
          # Energy Performance Preference
          epp = "performance";
          # Energy Performance Bias (0-15 scale or named value)
          epb = "balance_performance";
          # Platform profile (if supported)
          platform_profile = "performance";
          # Min/max frequency in MHz (optional)
          min_freq_mhz = 800;
          max_freq_mhz = 3500;
          # Optional: Profile-specific battery charge thresholds (overrides global setting)
          # battery_charge_thresholds = [40, 80]  # Start at 40%, stop at 80%
        };

        battery = {
          governor = "powersave";
          turbo = "auto";
          epp = "power";
          epb = "balance_power";
          platform_profile = "low-power";
          min_freq_mhz = 800;
          max_freq_mhz = 2500;
        };

        daemon = {
          # Base polling interval in seconds
          poll_interval_sec = 5;
          # Enable adaptive polling that changes with system state
          adaptive_interval = true;
          # Minimum polling interval for adaptive polling (seconds)
          min_poll_interval_sec = 1;
          # Maximum polling interval for adaptive polling (seconds)
          max_poll_interval_sec = 30;
          # Double the polling interval when on battery to save power
          throttle_on_battery = true;
          # Logging level: Error, Warning, Info, Debug
          log_level = "Info";
        };
      };
    };
    services = {
      upower = {
        enable = true;
        percentageLow = 15;
        percentageCritical = 5;
      };

      acpid = {
        enable = true;
        logEvents = true;
      };

      auto-cpufreq = {
        enable = false;
        settings = {
          charger = {
            governor = "performance";
            energy_performance_preference = "performance";
            scaling_min_freq = mkDefault 1800000;
            scaling_max_freq = mkDefault 3800000;
            turbo = "auto";
          };

          battery = {
            governor = "powersave";
            energy_performance_preference = "power";
            scaling_min_freq = mkDefault 1200000;
            scaling_max_freq = mkDefault 1800000;
            turbo = "never";
          };
        };
      };
    };
  };
}