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|
{ config, lib, pkgs, ... }:
with lib;
let
canonicalHandlers = {
powerEvent = {
event = "button/power.*";
action = config.services.acpid.powerEventCommands;
};
lidEvent = {
event = "button/lid.*";
action = config.services.acpid.lidEventCommands;
};
acEvent = {
event = "ac_adapter.*";
action = config.services.acpid.acEventCommands;
};
};
acpiConfDir = pkgs.runCommand "acpi-events" { preferLocalBuild = true; }
''
mkdir -p $out
${
# Generate a configuration file for each event. (You can't have
# multiple events in one config file...)
let f = name: handler:
''
fn=$out/${name}
echo "event=${handler.event}" > $fn
echo "action=${pkgs.writeShellScriptBin "${name}.sh" handler.action }/bin/${name}.sh '%e'" >> $fn
'';
in concatStringsSep "\n" (mapAttrsToList f (canonicalHandlers // config.services.acpid.handlers))
}
'';
in
{
###### interface
options = {
services.acpid = {
enable = mkOption {
type = types.bool;
default = false;
description = "Whether to enable the ACPI daemon.";
};
logEvents = mkOption {
type = types.bool;
default = false;
description = "Log all event activity.";
};
handlers = mkOption {
type = types.attrsOf (types.submodule {
options = {
event = mkOption {
type = types.str;
example = [ "button/power.*" "button/lid.*" "ac_adapter.*" "button/mute.*" "button/volumedown.*" "cd/play.*" "cd/next.*" ];
description = "Event type.";
};
action = mkOption {
type = types.lines;
description = "Shell commands to execute when the event is triggered.";
};
};
});
description = ''
Event handlers.
<note><para>
Handler can be a single command.
</para></note>
'';
default = {};
example = {
ac-power = {
event = "ac_adapter/*";
action = ''
vals=($1) # space separated string to array of multiple values
case ''${vals[3]} in
00000000)
echo unplugged >> /tmp/acpi.log
;;
00000001)
echo plugged in >> /tmp/acpi.log
;;
*)
echo unknown >> /tmp/acpi.log
;;
esac
'';
};
};
};
powerEventCommands = mkOption {
type = types.lines;
default = "";
description = "Shell commands to execute on a button/power.* event.";
};
lidEventCommands = mkOption {
type = types.lines;
default = "";
description = "Shell commands to execute on a button/lid.* event.";
};
acEventCommands = mkOption {
type = types.lines;
default = "";
description = "Shell commands to execute on an ac_adapter.* event.";
};
};
};
###### implementation
config = mkIf config.services.acpid.enable {
systemd.services.acpid = {
description = "ACPI Daemon";
wantedBy = [ "multi-user.target" ];
after = [ "systemd-udev-settle.service" ];
path = [ pkgs.acpid ];
serviceConfig = {
Type = "forking";
};
unitConfig = {
ConditionVirtualization = "!systemd-nspawn";
ConditionPathExists = [ "/proc/acpi" ];
};
script = "acpid ${optionalString config.services.acpid.logEvents "--logevents"} --confdir ${acpiConfDir}";
};
};
}
|