134 lines
3.2 KiB
Nix
134 lines
3.2 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.actkbd;
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configFile = pkgs.writeText "actkbd.conf" ''
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${concatMapStringsSep "\n"
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({ keys, events, attributes, command, ... }:
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''${concatMapStringsSep "+" toString keys}:${concatStringsSep "," events}:${concatStringsSep "," attributes}:${command}''
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)
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cfg.bindings}
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${cfg.extraConfig}
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'';
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bindingCfg = { ... }: {
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options = {
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keys = mkOption {
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type = types.listOf types.int;
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description = "List of keycodes to match.";
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};
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events = mkOption {
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type = types.listOf (types.enum ["key" "rep" "rel"]);
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default = [ "key" ];
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description = "List of events to match.";
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};
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attributes = mkOption {
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type = types.listOf types.str;
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default = [ "exec" ];
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description = "List of attributes.";
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};
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command = mkOption {
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type = types.str;
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default = "";
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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.actkbd = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Whether to enable the <command>actkbd</command> key mapping daemon.
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Turning this on will start an <command>actkbd</command>
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instance for every evdev input that has at least one key
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(which is okay even for systems with tiny memory footprint,
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since actkbd normally uses <100 bytes of memory per
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instance).
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This allows binding keys globally without the need for e.g.
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X11.
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'';
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};
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bindings = mkOption {
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type = types.listOf (types.submodule bindingCfg);
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default = [];
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example = lib.literalExpression ''
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[ { keys = [ 113 ]; events = [ "key" ]; command = "''${pkgs.alsa-utils}/bin/amixer -q set Master toggle"; }
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]
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'';
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description = ''
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Key bindings for <command>actkbd</command>.
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See <command>actkbd</command> <filename>README</filename> for documentation.
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The example shows a piece of what <option>sound.mediaKeys.enable</option> does when enabled.
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Literal contents to append to the end of actkbd 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 = mkIf cfg.enable {
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services.udev.packages = lib.singleton (pkgs.writeTextFile {
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name = "actkbd-udev-rules";
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destination = "/etc/udev/rules.d/61-actkbd.rules";
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text = ''
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ACTION=="add", SUBSYSTEM=="input", KERNEL=="event[0-9]*", ENV{ID_INPUT_KEY}=="1", TAG+="systemd", ENV{SYSTEMD_WANTS}+="actkbd@$env{DEVNAME}.service"
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'';
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});
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systemd.services."actkbd@" = {
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enable = true;
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restartIfChanged = true;
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unitConfig = {
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Description = "actkbd on %I";
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ConditionPathExists = "%I";
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};
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serviceConfig = {
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Type = "forking";
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ExecStart = "${pkgs.actkbd}/bin/actkbd -D -c ${configFile} -d %I";
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};
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};
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# For testing
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environment.systemPackages = [ pkgs.actkbd ];
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};
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}
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