From 1c3c80360b914ff8eacdabeb6d05565721121b1e Mon Sep 17 00:00:00 2001
From: Markus Hauck <markus1189@gmail.com>
Date: Wed, 21 Feb 2018 08:11:33 +0100
Subject: [PATCH] logkeys.service: Add 'device' option

---
 nixos/modules/services/misc/logkeys.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/services/misc/logkeys.nix b/nixos/modules/services/misc/logkeys.nix
index df0b3ae24c90..ad13d9eaa674 100644
--- a/nixos/modules/services/misc/logkeys.nix
+++ b/nixos/modules/services/misc/logkeys.nix
@@ -7,6 +7,13 @@ let
 in {
   options.services.logkeys = {
     enable = mkEnableOption "logkeys service";
+
+    device = mkOption {
+      description = "Use the given device as keyboard input event device instead of /dev/input/eventX default.";
+      default = null;
+      type = types.nullOr types.string;
+      example = "/dev/input/event15";
+    };
   };
 
   config = mkIf cfg.enable {
@@ -14,7 +21,7 @@ in {
       description = "LogKeys Keylogger Daemon";
       wantedBy = [ "multi-user.target" ];
       serviceConfig = {
-        ExecStart = "${pkgs.logkeys}/bin/logkeys -s";
+        ExecStart = "${pkgs.logkeys}/bin/logkeys -s${lib.optionalString (cfg.device != null) " -d ${cfg.device}"}";
         ExecStop = "${pkgs.logkeys}/bin/logkeys -k";
         Type = "forking";
       };