feat(i3status-rust): show current keyboard layout

lib/i3status-rust.nix

@@ -121,6 +121,11 @@ in {
       device = wirelessInterface;
       format = "{ssid} {signal_strength}";
     }
+    {
+      block = "custom";
+      interval = 5;
+      command = ''printf "⌨ %s\n" "$(${pkgs.xkblayout-state}/bin/xkblayout-state print %s)"'';
+    }
     {
       block = "battery";
       device = batteryName;