depot/third_party/nixpkgs/nixos/modules/services/hardware/actkbd.nix

151 lines
3.5 KiB
Nix

{
config,
lib,
pkgs,
...
}:
let
cfg = config.services.actkbd;
configFile = pkgs.writeText "actkbd.conf" ''
${lib.concatMapStringsSep "\n" (
{
keys,
events,
attributes,
command,
...
}:
''${
lib.concatMapStringsSep "+" toString keys
}:${lib.concatStringsSep "," events}:${lib.concatStringsSep "," attributes}:${command}''
) cfg.bindings}
${cfg.extraConfig}
'';
bindingCfg =
{ ... }:
{
options = {
keys = lib.mkOption {
type = lib.types.listOf lib.types.int;
description = "List of keycodes to match.";
};
events = lib.mkOption {
type = lib.types.listOf (
lib.types.enum [
"key"
"rep"
"rel"
]
);
default = [ "key" ];
description = "List of events to match.";
};
attributes = lib.mkOption {
type = lib.types.listOf lib.types.str;
default = [ "exec" ];
description = "List of attributes.";
};
command = lib.mkOption {
type = lib.types.str;
default = "";
description = "What to run.";
};
};
};
in
{
###### interface
options = {
services.actkbd = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Whether to enable the {command}`actkbd` key mapping daemon.
Turning this on will start an {command}`actkbd`
instance for every evdev input that has at least one key
(which is okay even for systems with tiny memory footprint,
since actkbd normally uses \<100 bytes of memory per
instance).
This allows binding keys globally without the need for e.g.
X11.
'';
};
bindings = lib.mkOption {
type = lib.types.listOf (lib.types.submodule bindingCfg);
default = [ ];
example = lib.literalExpression ''
[ { keys = [ 113 ]; events = [ "key" ]; command = "''${pkgs.alsa-utils}/bin/amixer -q set Master toggle"; }
]
'';
description = ''
Key bindings for {command}`actkbd`.
See {command}`actkbd` {file}`README` for documentation.
The example shows a piece of what {option}`sound.mediaKeys.enable` does when enabled.
'';
};
extraConfig = lib.mkOption {
type = lib.types.lines;
default = "";
description = ''
Literal contents to append to the end of actkbd configuration file.
'';
};
};
};
###### implementation
config = lib.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 ];
};
}