anchor.diff:      inherit rev;
       owner = "prometheus";
       repo = "prometheus";
  -    sha256 = "05yd3y1b0406qdmx7p27pya9kzcrv66069z1y8dqwj3bf9c7csnm";
  +    sha256 = "1b24nx6gmx2c7fj92p2byla3i0zs6xwymxqji00gvgpxr8bsfhn1";
     };
   
     docheck = true;
  
positive.code:     description = "Service monitoring system and time series database";
      homepage = http://prometheus.io;
      license = licenses.asl20;
      maintainers = with maintainers; [ benley ];
      platforms = platforms.unix;
    };
  }
  
negative.code: 
  buildGoPackage rec {
    name = "prometheus-${version}";
    version = "1.5.2";
    rev = "v${version}";
  
    goPackagePath = "github.com/prometheus/prometheus";
  