anchor.diff:    nix.binaryCachePublicKeys = [ "cache.daiderd.com-1:R8KOWZ8lDaLojqD+v9dzXAqGn29gEzPTTbr/GIpCTrI=" ];
     nix.trustedBinaryCaches = [ https://d3i7ezr9vxxsfy.cloudfront.net ];
     nix.trustedUsers = [ "@admin" ];
  +  nix.useSandbox = true;
  +  nix.package = pkgs.nixUnstable;
   
     programs.nix-index.enable = true;
   
  
positive.code:     serviceConfig.StartInterval = 360;
    };
  
    services.activate-system.enable = true;
  
    nix.extraOptions = ''
      gc-keep-derivations = true
  
negative.code:   programs.zsh.enableFzfGit = true;
    programs.zsh.enableFzfHistory = true;
  
    programs.zsh.variables.cfg = "$HOME/.config/nixpkgs/darwin/configuration.nix";
    programs.zsh.variables.darwin = "$HOME/.nix-defexpr/darwin";
    programs.zsh.variables.pkgs = "$HOME/.nix-defexpr/nixpkgs";
  
  