anchor.diff:      description = "Service monitoring system and time series database";
       homepage = http://prometheus.io;
       license = licenses.asl20;
  -    maintainers = with maintainers; [ benley ];
  +    maintainers = with maintainers; [ benley fpletz ];
       platforms = platforms.unix;
     };
   }
  
positive.code: 
  buildGoPackage rec {
    name = "prometheus-${version}";
    version = "1.4.1";
    rev = "v${version}";
  
    goPackagePath = "github.com/prometheus/prometheus";
  
negative.code:     inherit rev;
      owner = "prometheus";
      repo = "prometheus";
      sha256 = "1b24nx6gmx2c7fj92p2byla3i0zs6xwymxqji00gvgpxr8bsfhn1";
    };
  
    docheck = true;
  