initial config commit

modules/nixos/features/localisation.nix

@@ -0,0 +1,21 @@
+{ config, lib, ... }:
+let
+  feature = "localisation";
+in
+{
+  config = lib.mkIf config.${feature}.enable {
+    i18n = {
+      defaultLocale = "en_AU.UTF-8";
+      supportedLocales = [
+        "en_US.UTF-8/UTF-8"
+        "en_AU.UTF-8/UTF-8"
+      ];
+    };
+
+    time.timeZone = "Australia/Melbourne";
+  };
+
+  imports = [ ];
+
+  options.${feature}.enable = lib.mkEnableOption "enables ${feature}";
+}