anchor.diff:    })];
   
     configurePhase = ''
  +    patchShebangs .
  +
       ./configure --prefix="$out"                                 \
         --disable-dependency-tracking --enable-fast-install       \
         --with-lzo --with-libtasn1-prefix="${libtasn1}"		\
  
positive.code:         else ""}
    '';
  
    buildInputs = [ zlib lzo libtasn1 pkgconfig ]
      ++ stdenv.lib.optional guileBindings guile;
  
    propagatedBuildInputs = [ nettle ];
  
negative.code: { fetchurl, stdenv, zlib, lzo, libtasn1, nettle
  , guileBindings, guile, pkgconfig, perl }:
  
  assert guileBindings -> guile != null;
  
  