anchor.diff:      mv $TMP/$dirname $out
       cd $out/$dirname
       bin/isabelle install $out/bin
  +
  +    wrapProgram $out/$dirname/src/HOL/Tools/ATP/scripts/remote_atp --set PERL5LIB ${perlPackages.makeFullPerlPath [ perlPackages.LWP ]}
     '';
   
     meta = with lib; {
  
positive.code: { lib, stdenv, fetchurl, perl, nettools, java, polyml, z3, rlwrap }:
  # nettools needed for hostname
  
  stdenv.mkDerivation rec {
  
negative.code:       sha256 = "1bibabhlsvf6qsjjkgxcpq3cvl1z7r8yfcgqbhbvsiv69n3gyfk3";
      };
  
    buildInputs = [ perl polyml z3 makeWrapper ]
               ++ lib.optionals (!stdenv.isDarwin) [ nettools java ];
  
    sourceRoot = dirname;
  