anchor.diff:  stdenv.mkDerivation rec {
     name = "fontforge-${version}";
   
  -  src = fetchzip {
  -    version = 3;
  -    url = "https://github.com/fontforge/fontforge/archive/${version}.tar.gz";
  -    sha256 = "4e854db895ae1386a12a60af224d072664e3dc7b5d75145edc39566302730332";
  +  src = fetchurl {
  +    url = "https://github.com/fontforge/fontforge/releases/download/"
  +      + "${version}/fontforge-dist-${version}.tar.xz";
  +    sha256 = "840adefbedd1717e6b70b33ad1e7f2b116678fa6a3d52d45316793b9fd808822";
     };
   
  -  patches = [
  -    (fetchpatch {
  -      name = "use-system-uthash.patch";
  -      url = "http://pkgs.fedoraproject.org/cgit/fontforge.git/plain/"
  -        + "fontforge-20140813-use-system-uthash.patch?id=8bdf933";
  -      multihash = "QmcmrPTJafenDXyxb27fUwp4z9gQuwUFUyDQyH7xRmYiLP";
  -      sha256 = "0n8i62qv2ygfii535rzp09vvjx4qf9zp5qq7qirrbzm1l9gykcjy";
  -    })
  -  ];
  -
  -  patchFlags = "-p0";
  -
     nativeBuildInputs = [
  -    autoconf
  -    automake
       gettext
  -    gnum4
  -    libtool
  -    perl
     ];
   
     buildInputs = [
  
positive.code:     glib
      libjpeg
      libpng
      libtiff
      libxml2
      readline
      uthash
      zlib
    ];
  
    preConfigure = ''
      sed -i '/func_check_versions ()/{N;s/{/{ return 0/}' bootstrap
  
      unpackFile "${gnulib.src}"
      mv gnulib* gnulib
  
      ./bootstrap --skip-git --gnulib-srcdir=./gnulib
    '';
  
    configureFlags = [
  
negative.code: { stdenv
  , fetchurl
  , gettext
  , lib
  
  , cairo
  , freetype
  , giflib
  , glib
  , libjpeg
  , libpng
  , libspiro
  , libtiff
  , libtool
  , libuninameslist
  , libxml2
  , readline
  , uthash
  , zeromq
  , zlib
  }:
  
  