Further file arrangement

flake.nix

@@ -18,39 +18,9 @@
   };
 
   outputs = inputs@{ self, nix-darwin, nixpkgs, home-manager, nixvim, claude-code, firefox-addons, nix-homebrew }:
-  let
-    # Common system configuration shared across all Darwin systems
-    commonSystemConfig = { pkgs, ... }: {
-      imports = [
-        ./modules/tailscale.nix
-      ];
-
-      environment.systemPackages = [
-        # System-level packages only
-      ];
-
-      nix.settings.experimental-features = "nix-command flakes";
-      nix.settings.substituters = [
-        "https://cache.nixos.org/"
-        "https://nix-community.cachix.org"
-        "https://devenv.cachix.org"
-      ];
-      nix.settings.trusted-public-keys = [
-        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
-        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-        "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
-      ];
-      system.stateVersion = 6;
-      nixpkgs.hostPlatform = "aarch64-darwin";
-
-      programs.zsh.enable = true;
-    };
-
-  in
   {
     darwinConfigurations."iMac" = nix-darwin.lib.darwinSystem {
       modules = [ 
-        commonSystemConfig
         ./hosts/darwin/iMac
       ];
       specialArgs = { inherit nix-homebrew; };
@@ -58,7 +28,6 @@
 
     darwinConfigurations."MacBook-Air" = nix-darwin.lib.darwinSystem {
       modules = [ 
-        commonSystemConfig
         ./hosts/darwin/MacBook-Air
       ];
       specialArgs = { inherit nix-homebrew; };

modules/nvim.nix

@@ -242,12 +242,14 @@
         },
       })
 
-      -- Dictionary completion setup
-      require("cmp_dictionary").setup({
-        paths = { "/usr/share/dict/words" },  -- Standard dictionary path
-        exact_length = 2,                     -- Minimum length before completion
-        first_case_insensitive = true,        -- Case insensitive matching
-      })
+      -- Dictionary completion setup (macOS only)
+      ${lib.optionalString pkgs.stdenv.isDarwin ''
+        require("cmp_dictionary").setup({
+          paths = { "/usr/share/dict/words" },  -- Standard dictionary path on macOS
+          exact_length = 2,                     -- Minimum length before completion
+          first_case_insensitive = true,        -- Case insensitive matching
+        })
+      ''}
 
       -- Telescope setup for better file finding
       local telescope = require('telescope')

system/darwin/default.nix

@@ -4,8 +4,27 @@
   imports = [
     ../../modules/homebrew.nix
     nix-homebrew.darwinModules.nix-homebrew
+    ../../modules/tailscale.nix
   ];
 
+  # Nix configuration
+  nix.settings.experimental-features = "nix-command flakes";
+  nix.settings.substituters = [
+    "https://cache.nixos.org/"
+    "https://nix-community.cachix.org"
+    "https://devenv.cachix.org"
+  ];
+  nix.settings.trusted-public-keys = [
+    "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+    "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+    "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
+  ];
+  
+  # System configuration
+  system.stateVersion = 6;
+  nixpkgs.hostPlatform = "aarch64-darwin";
+  programs.zsh.enable = true;
+
   # Set primary user for system preferences
   system.primaryUser = "yanlin";