anchor.diff:  
     buildInputs = [
       qtbase qtsvg qtserialport qtwebkit qtmultimedia qttools zlib
  -    qtconnectivity qtcharts
  +    qtconnectivity qtcharts libusb
     ];
     nativeBuildInputs = [ flex makeWrapper qmake yacc ];
   
  
positive.code:     cp src/gcconfig.pri.in src/gcconfig.pri
      cp qwt/qwtconfig.pri.in qwt/qwtconfig.pri
      echo 'QMAKE_LRELEASE = ${qttools.dev}/bin/lrelease' >> src/gcconfig.pri
      sed -i -e '21,23d' qwt/qwtconfig.pri # Removed forced installation to /usr/local
    '';
  
  
negative.code: { stdenv, fetchFromGitHub, mkDerivation
  , qtbase, qtsvg, qtserialport, qtwebkit, qtmultimedia, qttools
  , qtconnectivity, qtcharts, libusb
  , yacc, flex, zlib, qmake, makeDesktopItem, makeWrapper
  }:
  
  