anchor.diff:      rev    = version;
       sha256 = "0m2zy986kzcpg0g3bvvm815ap9n5ann5f6bdy7pfj6jv482bm5mg";
     };
  +
  +  nativeBuildInputs = [
  +    wrapQtAppsHook
  +  ];
   
     buildInputs = [
       fontconfig freetype libpng zlib libjpeg openssl
  
positive.code: { mkDerivation, lib, fetchFromGitHub, qtwebkit, qtsvg, qtxmlpatterns
  , fontconfig, freetype, libpng, zlib, libjpeg
  , openssl, libX11, libXext, libXrender }:
  
  mkDerivation rec {
    version = "0.12.6";
    pname = "wkhtmltopdf";
  
  
negative.code:     for f in src/image/image.pro src/pdf/pdf.pro ; do
        substituteInPlace $f --replace '$(INSTALL_ROOT)' ""
      done
    '';
  
    # rewrite library path
    postInstall = lib.optionalString stdenv.isDarwin ''
      install_name_tool -change libwkhtmltox.0.dylib $out/lib/libwkhtmltox.0.dylib $out/bin/wkhtmltopdf
      install_name_tool -change libwkhtmltox.0.dylib $out/lib/libwkhtmltox.0.dylib $out/bin/wkhtmltoimage
    '';
  
    configurePhase = "qmake wkhtmltopdf.pro INSTALLBASE=$out";
  