Start migration to using flake-parts

features-nixos/base/locale.nix

@@ -0,0 +1,28 @@
+{
+  flake.nixosModules.base = {
+    # Select internationalisation properties.
+    i18n.defaultLocale = "en_US.UTF-8";
+
+    i18n.extraLocaleSettings = {
+      LC_ADDRESS = "de_DE.UTF-8";
+      LC_IDENTIFICATION = "de_DE.UTF-8";
+      LC_MEASUREMENT = "de_DE.UTF-8";
+      LC_MONETARY = "de_DE.UTF-8";
+      LC_NAME = "de_DE.UTF-8";
+      LC_NUMERIC = "en_US.UTF-8";
+      LC_PAPER = "de_DE.UTF-8";
+      LC_TELEPHONE = "de_DE.UTF-8";
+      LC_TIME = "de_DE.UTF-8";
+    };
+
+    # Keymap
+    services.xserver.xkb = {
+      layout = "de";
+      variant = "";
+    };
+
+    console.keyMap = "de";
+
+    time.timeZone = "Europe/Berlin";
+  };
+}