145 lines
3.2 KiB
Nix
145 lines
3.2 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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let
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cfg = config.services.triggerhappy;
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socket = "/run/thd.socket";
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configFile = pkgs.writeText "triggerhappy.conf" ''
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${lib.concatMapStringsSep "\n" (
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{
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keys,
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event,
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cmd,
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...
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}:
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''${lib.concatMapStringsSep "+" (x: "KEY_" + x) keys} ${
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toString
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{
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press = 1;
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hold = 2;
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release = 0;
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}
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.${event}
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} ${cmd}''
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) cfg.bindings}
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${cfg.extraConfig}
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'';
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bindingCfg =
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{ ... }:
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{
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options = {
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keys = lib.mkOption {
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type = lib.types.listOf lib.types.str;
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description = "List of keys to match. Key names as defined in linux/input-event-codes.h";
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};
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event = lib.mkOption {
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type = lib.types.enum [
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"press"
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"hold"
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"release"
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];
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default = "press";
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description = "Event to match.";
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};
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cmd = lib.mkOption {
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type = lib.types.str;
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description = "What to run.";
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};
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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.triggerhappy = {
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enable = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Whether to enable the {command}`triggerhappy` hotkey daemon.
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'';
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};
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user = lib.mkOption {
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type = lib.types.str;
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default = "nobody";
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example = "root";
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description = ''
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User account under which {command}`triggerhappy` runs.
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'';
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};
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bindings = lib.mkOption {
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type = lib.types.listOf (lib.types.submodule bindingCfg);
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default = [ ];
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example = lib.literalExpression ''
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[ { keys = ["PLAYPAUSE"]; cmd = "''${lib.getExe pkgs.mpc} -q toggle"; } ]
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'';
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description = ''
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Key bindings for {command}`triggerhappy`.
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'';
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};
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extraConfig = lib.mkOption {
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type = lib.types.lines;
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default = "";
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description = ''
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Literal contents to append to the end of {command}`triggerhappy` configuration file.
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'';
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};
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};
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};
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###### implementation
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config = lib.mkIf cfg.enable {
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systemd.sockets.triggerhappy = {
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description = "Triggerhappy Socket";
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wantedBy = [ "sockets.target" ];
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socketConfig.ListenDatagram = socket;
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};
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systemd.services.triggerhappy = {
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wantedBy = [ "multi-user.target" ];
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description = "Global hotkey daemon";
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serviceConfig = {
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ExecStart = "${pkgs.triggerhappy}/bin/thd ${
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lib.optionalString (cfg.user != "root") "--user ${cfg.user}"
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} --socket ${socket} --triggers ${configFile} --deviceglob /dev/input/event*";
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};
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};
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services.udev.packages = lib.singleton (
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pkgs.writeTextFile {
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name = "triggerhappy-udev-rules";
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destination = "/etc/udev/rules.d/61-triggerhappy.rules";
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text = ''
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ACTION=="add", SUBSYSTEM=="input", KERNEL=="event[0-9]*", ATTRS{name}!="triggerhappy", \
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RUN+="${pkgs.triggerhappy}/bin/th-cmd --socket ${socket} --passfd --udev"
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'';
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}
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);
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};
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}
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