nixos: add actkbd module and sound.enableMediaKeys option

This commit is contained in:
Jan Malakhovski 2015-04-15 17:48:38 +00:00
parent bba9d17e94
commit 57ab189e78
3 changed files with 158 additions and 0 deletions

View File

@ -149,6 +149,7 @@
./services/games/minecraft-server.nix
./services/games/minetest-server.nix
./services/hardware/acpid.nix
./services/hardware/actkbd.nix
./services/hardware/amd-hybrid-graphics.nix
./services/hardware/bluetooth.nix
./services/hardware/freefall.nix

View File

@ -33,6 +33,16 @@ in
'';
};
enableMediaKeys = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable volume and capture control with keyboard media keys.
Enabling this will turn on <option>services.actkbd</option>.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
@ -80,6 +90,23 @@ in
};
};
services.actkbd = mkIf config.sound.enableMediaKeys {
enable = true;
bindings = [
# "Mute" media key
{ keys = [ 113 ]; events = [ "key" ]; command = "${alsaUtils}/bin/amixer -q set Master toggle"; }
# "Lower Volume" media key
{ keys = [ 114 ]; events = [ "key" "rep" ]; command = "${alsaUtils}/bin/amixer -q set Master 1- unmute"; }
# "Raise Volume" media key
{ keys = [ 115 ]; events = [ "key" "rep" ]; command = "${alsaUtils}/bin/amixer -q set Master 1+ unmute"; }
# "Mic Mute" media key
{ keys = [ 190 ]; events = [ "key" ]; command = "${alsaUtils}/bin/amixer -q set Capture toggle"; }
];
};
};
}

View File

@ -0,0 +1,130 @@
{ 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}
${cfg.extraConfig}
'';
bindingCfg = { config, ... }: {
options = {
keys = mkOption {
type = types.listOf types.int;
description = "List of keycodes to match.";
};
events = mkOption {
type = types.listOf (types.enum ["key" "rep" "rel"]);
default = [ "key" ];
description = "List of events to match.";
};
attributes = mkOption {
type = types.listOf types.str;
default = [ "exec" ];
description = "List of attributes.";
};
command = mkOption {
type = types.str;
default = "";
description = "What to run.";
};
};
};
in
{
###### interface
options = {
services.actkbd = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable the <command>actkbd</command> key mapping daemon.
Turning this on will start an <command>actkbd</command>
instance for every evdev input that has at least one key
(which is okay even for systems with tiny memory footprint,
since actkbd normally uses &lt;100 bytes of memory per
instance).
This allows binding keys globally without the need for e.g.
X11.
'';
};
bindings = mkOption {
type = types.listOf (types.submodule bindingCfg);
default = [];
example = lib.literalExample ''
[ { keys = [ 113 ]; events = [ "key" ]; command = "''${pkgs.alsaUtils}/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.enableMediaKeys</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";
};
};
};
}