panacea/modules/power.nix

{ config, lib, pkgs, ... }:

{
  # Enable the TLP daemon
  services.tlp = {
    enable = true;
    settings = {
      CPU_MIN_PERF_ON_AC = 0;
      CPU_MAX_PERF_ON_AC = 100;
      CPU_MIN_PERF_ON_BAT = 0;
      CPU_MAX_PERF_ON_BAT = 50;
    };
  };

  # Suspend when the battery is critical and autosuspend USB and PCI
  services.udev.extraRules = ''
    SUBSYSTEM=="power_supply", ATTR{status}=="Discharging", ATTR{model_name}=="01AV405", ATTR{capacity}=="[0-5]", RUN+="${config.systemd.package}/bin/systemctl suspend -i"
    ACTION=="add", SUBSYSTEM=="usb", TEST=="power/control", ATTR{power/control}="auto"
    ACTION=="add", SUBSYSTEM=="pci", TEST=="power/control", ATTR{power/control}="auto"
  '';

  # Undervolt CPU and GPU
  services.undervolt = {
    enable = true;
    coreOffset = -100;
    gpuOffset = -75;
  };

  # Prevent overheating of the CPU
  services.thermald.enable = true;

  # Provide power management support to programs
  services.upower.enable = true;

  # Turn off keyboard backlight when unused
  services.tp-auto-kbbl.enable = true;

}