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