anchor.diff:  
     src = fetchurl {
       url = "http://www.atoptool.nl/download/netatop-${version}.tar.gz";
  -    sha256 = "1l7xs3hnfbk6h5gdrw1ikfa0fvfpb5vd447xhwfllvicblqyip8b";
  +    sha256 = "03n248p1l3ps7gj2hdlcbrb1fsw1zcmgzypj4j4l4rynjjh7qvf6";
     };
   
     buildInputs = [ zlib ];
  
positive.code: { stdenv, fetchurl, kernel, zlib }:
  
  let
    version = "1.0";
  in
  
  stdenv.mkDerivation {
  
negative.code:     license = stdenv.lib.licenses.gpl2;
      platforms = stdenv.lib.platforms.linux;
      maintainers = with stdenv.lib.maintainers; [viric];
    };
  }
  