anchor.diff:    ];
   
     nativeBuildInputs = [ autoreconfHook ];
  -  buildInputs = [ libpcap makeWrapper ];
  +  buildInputs = [ perlPackages.perl libpcap makeWrapper ];
   
     postInstall = ''
       for name in get-{oui,iab}; do
  -      wrapProgram "$out/bin/$name" --set PERL5LIB "${perlPackages.makePerlPath perlModules }"
  +      wrapProgram "$out/bin/$name" --set PERL5LIB "${perlPackages.makeFullPerlPath perlModules}"
       done;
     '';
   
  
positive.code: 
  stdenv.mkDerivation rec {
    pname = "arp-scan";
    version = "1.9.5";
  
    src = fetchFromGitHub {
      owner = "royhills";
      repo = "arp-scan";
      rev = "4de863c2627a05177eda7159692a588f9f520cd1";
      sha256 = "15zpfdybk2kh98shqs8qqd0f9nyi2ch2wcyv729rfj7yp0hif5mb";
    };
  
    perlModules = with perlPackages; [
  
negative.code:       Arp-scan is a command-line tool that uses the ARP protocol to discover
        and fingerprint IP hosts on the local network.
      '';
      homepage = "http://www.nta-monitor.com/wiki/index.php/Arp-scan_Documentation";
      license = licenses.gpl3;
      platforms = platforms.linux;
      maintainers = with maintainers; [ bjornfor mikoim ];
  