feat: update macOS's system config

modules/darwin/apps.nix

@@ -20,6 +20,8 @@
     neovim
     git
     nushell # my custom shell
+    gnugrep  # replacee macos's grep
+    gnutar # replacee macos's tar
   ];
   environment.variables.EDITOR = "nvim";
 
@@ -42,8 +44,6 @@
 
   # homebrew need to be installed manually, see https://brew.sh
   homebrew = {
-    # TODO Homebrew install takes a long time,
-    # So only enable this when you make changes.
     enable = true;
 
     onActivation = {

modules/darwin/system.nix

@@ -24,8 +24,10 @@
 
       # customize dock
       dock = {
-        autohide = true;
-        show-recents = false; # disable recent apps
+        autohide = true;  # automatically hide and show the dock
+        show-recents = false; # do not show recent apps in dock
+        # do not automatically rearrange spaces based on most recent use. 
+        mru-spaces = false; 
 
         # customize Hot Corners(触发角, 鼠标移动到屏幕角落时触发的动作)
         wvous-tl-corner = 2; # top-left - Mission Control
@@ -78,7 +80,12 @@
       };
 
       # customize settings that not supported by nix-darwin directly
+      # see the source code of https://github.com/rgcr/m-cli to get all the available options
       CustomUserPreferences = {
+        ".GlobalPreferences" = {
+          # automatically switch to a new space when switching to the application
+          AppleSpacesSwitchOnActivate = true;
+        };
         NSGlobalDomain = {
           # Add a context menu item for showing the Web Inspector in web views
           WebKitDeveloperExtras = true;