anchor.diff:  
     configureFlags = [ "--with-x11" "--enable-ipc" "--with-mktexfmt"
       "--enable-shared" "--disable-native-texlive-build" "--with-system-zziplib"
  -    "--with-system-libgs" "--with-system-t1lib" "--with-system-freetype2" 
  +    "--with-system-libgs" "--with-system-t1lib" "--with-system-freetype2"
       "--with-system-freetype=no" "--disable-ttf2pk" "--enable-ttf2pk2"
       ]
       ++ ( if stdenv.isDarwin
  
positive.code:   patchShebangsInterimShareTexmfDist = doPatchShebangs ''$out/share/texmf-dist/scripts/'';
    patchShebangsInterimTexmfDist = doPatchShebangs ''$out/texmf-dist/scripts/'';
  
    patchShebangsInterim = fullDepEntry ("") ["patchShebangsInterimBin" 
      "patchShebangsInterimLibexec" "patchShebangsInterimTexmfDist" 
      "patchShebangsInterimShareTexmfDist"];
  
    buildInputs = [ zlib bzip2 ncurses libpng flex bison libX11 libICE xproto
  
negative.code:     url = mirror://debian/pool/main/t/texlive-lang/texlive-lang_2013.20131112.orig.tar.xz;
      sha256 = "003rj7pv38lgmggya2nbzcyfdx5d4wa7h1h4xh7iivsxja7z4m1d";
    };
  
    passthru = { inherit texmfSrc langTexmfSrc; };
  
    setupHook = ./setup-hook.sh;
  
  