74 lines
1.6 KiB
Nix
74 lines
1.6 KiB
Nix
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{ lib, config, pkgs, ... }: with lib; let
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cfg = config.module.powersave;
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script = pkgs.writeShellScriptBin "powersave" ''
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function toggle() {
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if status; then
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echo ${cfg.cpu.boost.disableCmd} > ${cfg.cpu.boost.controlFile}
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else
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echo ${cfg.cpu.boost.enableCmd} > ${cfg.cpu.boost.controlFile}
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fi
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true
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}
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function waybar() {
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status || echo -n ""
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}
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function status() {
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local current=$(cat ${cfg.cpu.boost.controlFile})
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local enabled="${cfg.cpu.boost.enableCmd}"
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[[ "''${current}" = "''${enabled}" ]]
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}
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''${@}
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'';
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in {
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options = {
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module.powersave = {
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enable = mkEnableOption "Powersave";
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cpu.boost = mkOption {
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default = {};
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type = types.submodule {
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options = {
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disableCmd = mkOption {
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default = null;
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type = types.str;
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};
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enableCmd = mkOption {
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default = null;
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type = types.str;
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};
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controlFile = mkOption {
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default = null;
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type = types.str;
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};
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};
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};
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};
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = [ script ];
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systemd = {
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services.powersave-cpu = {
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description = "Disable CPU Boost";
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enable = true;
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wantedBy = [ "multi-user.target" ];
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serviceConfig = {
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Type = "simple";
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RemainAfterExit = "yes";
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ExecStart = "${getExe pkgs.bash} -c 'echo ${cfg.cpu.boost.enableCmd} > ${cfg.cpu.boost.controlFile}'";
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ExecStop = "${getExe pkgs.bash} -c 'echo ${cfg.cpu.boost.disableCmd} > ${cfg.cpu.boost.controlFile}'";
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};
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};
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# HACK: Allow user access.
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tmpfiles.rules = [ "z ${cfg.cpu.boost.controlFile} 0777 - - - -" ];
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};
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};
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}
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