Prepare for new IVR Mac machine

Getting code prepared for arrival of the new Mac system
Adding the basic casks that I need

modules/darwin/default.nix

@@ -1,7 +1,7 @@
 { ... }:
 {
   imports = [ ../baseline.nix ];
-  system.stateVersion = 4;
+
   home-manager = {
     useGlobalPkgs = true;
     users."gregory.hellings" = import ../../home/home.nix;
@@ -11,14 +11,20 @@
       home = "/Users/gregory.hellings";
     };
   };
-  users.users."gregory.hellings".home = "/Users/gregory.hellings";
-  programs = {
-    zsh.enable = true;
-    bash.enable = true;
-  };
-  services.nix-daemon.enable = true;
+
   nix = {
     gc.interval.Hour = 24;
     settings.auto-optimise-store = false; # Darwin bugs?
   };
+
+  programs = {
+    zsh.enable = true;
+    bash.enable = true;
+  };
+
+  services.nix-daemon.enable = true;
+
+  system.stateVersion = 4;
+
+  users.users."gregory.hellings".home = "/Users/gregory.hellings";
 }