diff --git a/flake.nix b/flake.nix
index be4fcd7..5dd9bd1 100644
--- a/flake.nix
+++ b/flake.nix
@@ -60,9 +60,6 @@
       # The platform the configuration will be used on.
       nixpkgs.hostPlatform = "aarch64-darwin";
 
-      # Necessary for using flakes on this system.
-      nix.settings.experimental-features = "nix-command flakes";
-
       # Set Git commit hash for darwin-version.
       system.configurationRevision = self.rev or self.dirtyRev or null;
 
@@ -80,6 +77,22 @@
           ShowStatusBar = true; # show status bar
         };
       };
+
+      # Auto upgrade nix package and the daemon service.
+      services.nix-daemon.enable = true;
+
+      nix = {
+        configureBuildUsers = true;
+        distributedBuilds = true;
+
+        gc = {
+          automatic = true;
+          options = "--delete-older-than 7d";
+        };
+        settings = {
+          experimental-features = "nix-command flakes";
+        };
+      };
     };
   in
   {
@@ -106,27 +119,27 @@
           ./devices/becky-dingleberry.nix
         ];
       };
-    };
 
-    darwinConfigurations = {
-      # init with
-      # nix run nix-darwin -- switch --flake ~/.config/nix
-      # update with
-      # darwin-rebuild switch --flake ~/.config/nix
-      lcech-mac-veracode = nix-darwin.lib.darwinSystem {
-        system = "aarch64-darwin";
-        modules = [
-          darwin-common
-          home-manager.darwinModules.home-manager
-          {
-            home-manager = {
-              useGlobalPkgs = true;
-              useUserPackages = true;
-              users.lcech = import ./devices/lcech-mac-veracode.nix;
-            };
-            users.users.lcech.home = "/Users/lcech";
-          }
-        ];
+      darwinConfigurations = {
+        # init with
+        # nix run nix-darwin -- switch --flake ~/.config/nix
+        # update with
+        # darwin-rebuild switch --flake ~/.config/nix
+        lcech-mac-veracode = nix-darwin.lib.darwinSystem {
+          system = "aarch64-darwin";
+          modules = [
+            darwin-common
+            home-manager.darwinModules.home-manager
+            {
+              home-manager = {
+                useGlobalPkgs = true;
+                useUserPackages = true;
+                users.lcech = import ./devices/lcech-mac-veracode.nix;
+              };
+              users.users.lcech.home = "/Users/lcech";
+            }
+          ];
+        };
       };
     };
   };