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