nixpkgs/nixos/modules/services/x11/xautolock.nix

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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.xserver.xautolock;
in
{
options = {
services.xserver.xautolock = {
enable = mkEnableOption "xautolock";
enableNotifier = mkEnableOption "xautolock.notify" // {
description = ''
Whether to enable the notifier feature of xautolock.
This publishes a notification before the autolock.
'';
};
time = mkOption {
default = 15;
type = types.int;
description = ''
Idle time (in minutes) to wait until xautolock locks the computer.
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'';
};
locker = mkOption {
default = "${pkgs.xlockmore}/bin/xlock"; # default according to `man xautolock`
example = "${pkgs.i3lock}/bin/i3lock -i /path/to/img";
type = types.str;
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description = ''
The script to use when automatically locking the computer.
'';
};
nowlocker = mkOption {
default = null;
example = "${pkgs.i3lock}/bin/i3lock -i /path/to/img";
type = types.nullOr types.str;
description = ''
The script to use when manually locking the computer with <command>xautolock -locknow</command>.
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'';
};
notify = mkOption {
default = 10;
type = types.int;
description = ''
Time (in seconds) before the actual lock when the notification about the pending lock should be published.
'';
};
notifier = mkOption {
default = null;
example = "${pkgs.libnotify}/bin/notify-send \"Locking in 10 seconds\"";
type = types.nullOr types.str;
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description = ''
Notification script to be used to warn about the pending autolock.
'';
};
killer = mkOption {
default = null; # default according to `man xautolock` is none
example = "${pkgs.systemd}/bin/systemctl suspend";
type = types.nullOr types.str;
description = ''
The script to use when nothing has happend for as long as <option>killtime</option>
'';
};
killtime = mkOption {
default = 20; # default according to `man xautolock`
type = types.int;
description = ''
Minutes xautolock waits until it executes the script specified in <option>killer</option>
(Has to be at least 10 minutes)
'';
};
extraOptions = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "-detectsleep" ];
description = ''
Additional command-line arguments to pass to
<command>xautolock</command>.
'';
};
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};
};
config = mkIf cfg.enable {
environment.systemPackages = with pkgs; [ xautolock ];
systemd.user.services.xautolock = {
description = "xautolock service";
wantedBy = [ "graphical-session.target" ];
partOf = [ "graphical-session.target" ];
serviceConfig = with lib; {
ExecStart = strings.concatStringsSep " " ([
"${pkgs.xautolock}/bin/xautolock"
"-noclose"
"-time ${toString cfg.time}"
"-locker '${cfg.locker}'"
] ++ optionals cfg.enableNotifier [
"-notify ${toString cfg.notify}"
"-notifier '${cfg.notifier}'"
] ++ optionals (cfg.nowlocker != null) [
"-nowlocker '${cfg.nowlocker}'"
] ++ optionals (cfg.killer != null) [
"-killer '${cfg.killer}'"
"-killtime ${toString cfg.killtime}"
] ++ cfg.extraOptions);
Restart = "always";
};
};
assertions = [
{
assertion = cfg.enableNotifier -> cfg.notifier != null;
message = "When enabling the notifier for xautolock, you also need to specify the notify script";
}
{
assertion = cfg.killer != null -> cfg.killtime >= 10;
message = "killtime has to be at least 10 minutes according to `man xautolock`";
}
] ++ (lib.forEach [ "locker" "notifier" "nowlocker" "killer" ]
(option:
{
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assertion = cfg.${option} != null -> builtins.substring 0 1 cfg.${option} == "/";
message = "Please specify a canonical path for `services.xserver.xautolock.${option}`";
})
);
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};
}