nixos-config/modules/power.nix

41 lines
1.3 KiB
Nix

{ config, pkgs, lib, ... }:
with rec {
inherit (config) device devices deviceSpecific;
};
with deviceSpecific; {
services.udev.extraRules = if isLaptop then
''
ACTION=="add|change", KERNEL=="sd*[!0-9]|sr*", ATTR{queue/scheduler}="bfq"
ACTION=="change", SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${
pkgs.systemd
}/bin/systemctl start battery"
ACTION=="change", SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="${
pkgs.systemd
}/bin/systemctl start ac"
ACTION=="add|change", SUBSYSTEM=="backlight", MODE:="0777"
'' else "";
systemd.services.battery = {
enable = isLaptop;
description = "Executes commands needed on battery power";
script =
''
${pkgs.linuxPackages_latest.cpupower}/bin/cpupower frequency-set -g powersave
${pkgs.light}/bin/light -S 40
'' + (if !isSSD then ''
${pkgs.hdparm}/bin/hdparm -B 1 /dev/sda
'' else "");
};
systemd.services.ac = {
enable = isLaptop;
description = "Executes commands needed on ac power";
script =
''
${pkgs.linuxPackages_latest.cpupower}/bin/cpupower frequency-set -g performance
${pkgs.light}/bin/light -S 90
'' + (if !isSSD then ''
${pkgs.hdparm}/bin/hdparm -B 255 /dev/sda
'' else "");
};
}