anchor.diff:    # for the actual fix.
     enableParallelBuilding = false;
   
  -  buildInputs = [ zlib lzo ]
  +  buildInputs = [ zlib lzo lzip ]
       ++ stdenv.lib.optional guileBindings guile;
   
     nativeBuildInputs = [ perl pkgconfig ];
  
positive.code:   name = "gnutls-3.1.12";
  
    src = fetchurl {
      url = "ftp://ftp.gnutls.org/gcrypt/gnutls/v3.1/${name}.tar.xz";
      sha256 = "025k37wsl21ncwrg489ysbjqsz8iralvgv98adj960sl03787lyc";
    };
  
    # Note: GMP is a dependency of Nettle, whose public headers include
  
negative.code: 
      homepage = http://www.gnu.org/software/gnutls/;
      license = "LGPLv2.1+";
      maintainers = [ maintainers.ludo ];
    };
  }
  
  