anchor.diff:      url = "https://download.clipgrab.org/${pname}-${version}.tar.gz";
     };
   
  -  buildInputs = [ ffmpeg_3 qtbase qtdeclarative qtlocation qtquickcontrols2 qtwebchannel qtwebengine ];
  +  buildInputs = [ ffmpeg qtbase qtdeclarative qtlocation qtquickcontrols2 qtwebchannel qtwebengine ];
     nativeBuildInputs = [ qmake qttools ];
   
  -  postPatch = lib.optionalString (ffmpeg_3 != null) ''
  +  postPatch = lib.optionalString (ffmpeg != null) ''
     substituteInPlace converter_ffmpeg.cpp \
  -    --replace '"ffmpeg"' '"${ffmpeg_3.bin}/bin/ffmpeg"' \
  -    --replace '"ffmpeg ' '"${ffmpeg_3.bin}/bin/ffmpeg '
  +    --replace '"ffmpeg"' '"${ffmpeg.bin}/bin/ffmpeg"' \
  +    --replace '"ffmpeg ' '"${ffmpeg.bin}/bin/ffmpeg '
     '';
   
     qmakeFlags = [ "clipgrab.pro" ];
  -
  -  enableParallelBuilding = true;
   
     desktopItem = makeDesktopItem rec {
       name = "clipgrab";
  
positive.code: { lib, fetchurl, makeDesktopItem, ffmpeg_3
  , qmake, qttools, mkDerivation
  , qtbase, qtdeclarative, qtlocation, qtquickcontrols2, qtwebchannel, qtwebengine
  }:
  
negative.code:   };
  
    installPhase = ''
      runHook preInstall
      install -Dm755 clipgrab $out/bin/clipgrab
      install -Dm644 icon.png $out/share/pixmaps/clipgrab.png
      cp -r ${desktopItem}/share/applications $out/share
      runHook postInstall
    '';
  
    meta = with lib; {
  