55 lines
1.6 KiB
Nix
55 lines
1.6 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib; let
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grep = "${pkgs.gnugrep}/bin/grep";
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powerprofilesctl = "${pkgs.power-profiles-daemon}/bin/powerprofilesctl";
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cfg = config.custom.services.power-profiles-daemon;
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in {
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options.custom.services.power-profiles-daemon = {
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enable = mkOption {default = false;};
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auto = mkOption {default = true;};
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};
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config = mkIf cfg.enable {
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# https://gitlab.freedesktop.org/upower/power-profiles-daemon
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#!! Usage is imperative
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#?? powerprofilesctl set <performance|balanced|power-saver>
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services = {
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power-profiles-daemon.enable = true;
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#!! Conflicts with power-profiles-daemon
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auto-cpufreq.enable = false;
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tlp.enable = false;
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# Switch to power-saver mode when on battery
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# https://wiki.archlinux.org/title/Power_management#Using_a_script_and_an_udev_rule
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udev.extraRules = mkIf cfg.auto ''
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# AC
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SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="${powerprofilesctl} set balanced"
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# Battery
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SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${powerprofilesctl} set power-saver"
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'';
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};
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# Set power profile at boot/resume
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powerManagement = let
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set_profile = toString (pkgs.writeShellScript "set_profile" ''
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if ${grep} 1 /sys/class/power_supply/*/online; then
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# AC
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${powerprofilesctl} set balanced
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else
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# Battery
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${powerprofilesctl} set power-saver
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fi
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'');
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in {
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powerUpCommands = set_profile;
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resumeCommands = set_profile;
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};
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};
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}
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