init server modules

hosts/server/variables.nix

@@ -0,0 +1,36 @@
+{ config, lib, ... }: {
+  imports = [
+    # Choose your theme here:
+    ../../themes/nixy.nix
+  ];
+
+  config.var = {
+    hostname = "jack";
+    username = "hadi";
+    configDirectory = "/home/" + config.var.username
+      + "/.config/nixos"; # The path of the nixos configuration directory
+
+    keyboardLayout = "fr";
+
+    location = "Paris";
+    timeZone = "Europe/Paris";
+    defaultLocale = "en_US.UTF-8";
+    extraLocale = "fr_FR.UTF-8";
+
+    git = {
+      username = "Hadi";
+      email = "112569860+anotherhadi@users.noreply.github.com";
+    };
+
+    autoUpgrade = false;
+    autoGarbageCollector = true;
+  };
+
+  # Let this here
+  options = {
+    var = lib.mkOption {
+      type = lib.types.attrs;
+      default = { };
+    };
+  };
+}