Add support for the system76 launch keyboard configurator.

nix/configuration/roles/launch_keyboard/default.nix

@@ -0,0 +1,36 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  config = lib.mkIf config.me.graphical {
+    environment.systemPackages = with pkgs; [
+      system76-keyboard-configurator
+      dfu-programmer # For flashing keyboard https://support.system76.com/articles/launch_2-firmware-update/
+      avrdude # For flashing keyboard https://support.system76.com/articles/launch_2-firmware-update/
+      lxqt.lxqt-policykit # Need a polkit agent to launch the keyboard configurator
+    ];
+
+    # TODO: Switch sway to using seatd instead of polkit
+    systemd = {
+      user.services.lxqt-policykit-agent = {
+        description = "lxqt-policykit-agent";
+        wantedBy = [ "graphical-session.target" ];
+        wants = [ "graphical-session.target" ];
+        after = [ "graphical-session.target" ];
+        serviceConfig = {
+          Type = "simple";
+          ExecStart = "${pkgs.lxqt.lxqt-policykit}/bin/lxqt-policykit-agent";
+          Restart = "on-failure";
+          RestartSec = 1;
+          TimeoutStopSec = 10;
+        };
+      };
+    };
+  };
+}