128 lines
2.9 KiB
Nix
128 lines
2.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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canonicalHandlers = {
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powerEvent = {
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event = "button/power.*";
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action = config.services.acpid.powerEventCommands;
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};
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lidEvent = {
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event = "button/lid.*";
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action = config.services.acpid.lidEventCommands;
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};
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acEvent = {
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event = "ac_adapter.*";
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action = config.services.acpid.acEventCommands;
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};
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};
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acpiConfDir = pkgs.runCommand "acpi-events" {}
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''
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mkdir -p $out
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${
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# Generate a configuration file for each event. (You can't have
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# multiple events in one config file...)
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let f = name: handler:
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''
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fn=$out/${name}
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echo "event=${handler.event}" > $fn
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echo "action=${pkgs.writeScript "${name}.sh" (concatStringsSep "\n" [ "#! ${pkgs.bash}/bin/sh" handler.action ])}" >> $fn
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'';
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in concatStringsSep "\n" (mapAttrsToList f (canonicalHandlers // config.services.acpid.handlers))
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}
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'';
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in
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{
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###### interface
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options = {
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services.acpid = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable the ACPI daemon.";
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};
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handlers = mkOption {
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type = types.attrsOf (types.submodule {
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options = {
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event = mkOption {
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type = types.str;
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example = [ "button/power.*" "button/lid.*" "ac_adapter.*" "button/mute.*" "button/volumedown.*" "cd/play.*" "cd/next.*" ];
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description = "Event type.";
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};
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action = mkOption {
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type = types.lines;
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description = "Shell commands to execute when the event is triggered.";
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};
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};
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});
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description = "Event handlers.";
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default = {};
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example = { mute = { event = "button/mute.*"; action = "amixer set Master toggle"; }; };
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};
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powerEventCommands = mkOption {
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type = types.lines;
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default = "";
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description = "Shell commands to execute on a button/power.* event.";
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};
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lidEventCommands = mkOption {
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type = types.lines;
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default = "";
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description = "Shell commands to execute on a button/lid.* event.";
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};
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acEventCommands = mkOption {
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type = types.lines;
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default = "";
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description = "Shell commands to execute on an ac_adapter.* event.";
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};
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};
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};
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###### implementation
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config = mkIf config.services.acpid.enable {
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systemd.services.acpid = {
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description = "ACPI Daemon";
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wantedBy = [ "multi-user.target" ];
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after = [ "systemd-udev-settle.service" ];
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path = [ pkgs.acpid ];
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serviceConfig = {
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Type = "forking";
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};
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unitConfig = {
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ConditionVirtualization = "!systemd-nspawn";
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ConditionPathExists = [ "/proc/acpi" ];
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};
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script = "acpid --confdir ${acpiConfDir}";
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};
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};
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}
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