anchor.diff:    upstartJob = {name, config, ...}: {
   
       options = {
  +    
         jobDrv = mkOption {
           default = makeJob config;
           type = types.uniq types.package;
  
positive.code:           value is generated from other options.
          '';
        };
      };
  
      config = {
        # The default name is the name extracted from the attribute path.
        name = mkDefaultValue (
          replaceChars ["<" ">" "*"] ["_" "_" "_name_"] name
        );
      };
  
    };
  
negative.code: let
  
    upstart = pkgs.upstart;
  
  
    # From a job description, generate an Upstart job file.
  