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home-manager/modules/services/screen-locker.nix

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2017-09-20 16:50:49 +02:00
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.screen-locker;
in {
options.services.screen-locker = {
enable = mkEnableOption "screen locker for X session";
lockCmd = mkOption {
type = types.str;
description = "Locker command to run.";
example = "\${pkgs.i3lock}/bin/i3lock -n -c 000000";
};
inactiveInterval = mkOption {
type = types.int;
default = 10;
description = ''
Inactive time interval in minutes after which session will be locked.
The minimum is 1 minute, and the maximum is 1 hour.
See <link xlink:href="https://linux.die.net/man/1/xautolock"/>.
'';
};
xautolockExtraOptions = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra command-line arguments to pass to <command>xautolock</command>.
'';
};
xssLockExtraOptions = mkOption {
type = types.listOf types.str;
default = [];
description = ''
Extra command-line arguments to pass to <command>xss-lock</command>.
'';
};
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};
config = mkIf cfg.enable {
systemd.user.services.xautolock-session = {
Unit = {
Description = "xautolock, session locker service";
After = [ "graphical-session-pre.target" ];
PartOf = [ "graphical-session.target" ];
};
Install = {
WantedBy = [ "graphical-session.target" ];
};
Service = {
ExecStart = concatStringsSep " " ([
"${pkgs.xautolock}/bin/xautolock"
"-detectsleep"
"-time ${toString cfg.inactiveInterval}"
"-locker '${pkgs.systemd}/bin/loginctl lock-session $XDG_SESSION_ID'"
] ++ cfg.xautolockExtraOptions);
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};
};
# xss-lock will run specified screen locker when the session is locked via loginctl
# can't be started as a systemd service,
# see https://bitbucket.org/raymonad/xss-lock/issues/13/allow-operation-as-systemd-user-unit
xsession.initExtra = "${pkgs.xss-lock}/bin/xss-lock ${concatStringsSep " " cfg.xssLockExtraOptions} -- ${cfg.lockCmd} &";
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};
}