nixosTests.console-xkb-and-i18n: init

Based upon reproducer posted here:

https://github.com/NixOS/nixpkgs/issues/445666#issuecomment-3331002679

nixos/tests/all-tests.nix

@@ -385,6 +385,7 @@ in
   collectd = runTest ./collectd.nix;
   commafeed = runTest ./commafeed.nix;
   connman = runTest ./connman.nix;
+  console-xkb-and-i18n = runTest ./console-xkb-and-i18n.nix;
   consul = runTest ./consul.nix;
   consul-template = runTest ./consul-template.nix;
   containers-bridge = runTest ./containers-bridge.nix;

nixos/tests/console-xkb-and-i18n.nix

@@ -0,0 +1,23 @@
+{ lib, ... }:
+{
+  name = "console-xkb-and-i18n";
+  meta.maintainers = with lib.maintainers; [ doronbehar ];
+
+  nodes = {
+    # Nothing to run on this node, a bug (TODO: where?) is causing a builder of
+    # the configuration to fail. See:
+    #
+    # - https://github.com/NixOS/nixpkgs/issues/445666
+    # - https://github.com/NixOS/nixpkgs/issues/411374
+    #
+    x = {
+      i18n.defaultLocale = "eo";
+      console.useXkbConfig = true;
+      services.xserver.xkb = {
+        layout = "us";
+        variant = "colemak";
+      };
+    };
+  };
+  testScript = { nodes, ... }: "";
+}