feat: update for darwin

hosts/harmonica/default.nix

@@ -1,10 +1,33 @@
-{ config, pkgs, home-manager, ... } @ args:
+# My MacBook Pro - Computer for Business
+{ pkgs, ... } @ args:
 
 {
   imports = [
-    ../../modules/fhs-fonts.nix
-    ../../modules/system.nix
+    ../../modules/darwin/common.nix    
   ];
+
+  # # enable flakes globally
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # Auto upgrade nix package and the daemon service.
+  services.nix-daemon.enable = true;
+  # Use this instead of services.nix-daemon.enable if you
+  # don't wan't the daemon service to be managed for you.
+  # nix.useDaemon = true;
+
+  nix.package = pkgs.nix;
+
+  programs.nix-index.enable = true;
+
+  # Add ability to used TouchID for sudo authentication
+  security.pam.enableSudoTouchIdAuth = true;
+
+  # Keyboard
+  system.keyboard.enableKeyMapping = true;
+  system.keyboard.remapCapsLockToEscape = true;
+
+  # Set your time zone.
+  time.timeZone = "Asia/Shanghai";
 }