anchor.diff:  ###### interface
   let
     inherit (pkgs.lib) mkOption;
  -
  +  
     options = {
       services = {
         disnix = {
           enable = mkOption {
             default = false;
             description = "Whether to enable Disnix";
  -        };
  -        
  -        activateHook = mkOption {
  -          default = "";
  -          description = "Custom script or executable that activates services through Disnix";
  -        };
  -
  -        deactivateHook = mkOption {
  -          default = "";
  -          description = "Custom script or executable that deactivates services through Disnix";
  -        };
  +        };        
         };
       };
     };
  
positive.code:     #../upstart-jobs/dbus.nix # services.dbus.*
      options
    ];
  
    services = {
      extraJobs = [job];
  
      dbus = {
        enable = true;
        packages = [pkgs.disnix];
      };
    };
  }
  
negative.code: 
        start on dbus
        stop on shutdown  
      
        script
          export ACTIVATION_SCRIPTS=${pkgs.disnix_activation_scripts}/libexec/disnix/activation-scripts
          export PATH=${pkgs.nixUnstable}/bin
          export HOME=/root
  	
          ${pkgs.disnix}/bin/disnix-service
        end script
      '';
    };
  in
  