anchor.diff:        --qsci-incdir=${qscintilla}/include \
         --qsci-featuresdir=${qscintilla}/mkspecs/features \
         --qsci-libdir=${qscintilla}/lib \
  -      --pyqt-sipdir=${pyqt5}/share/sip/PyQt5 \
  +      --pyqt-sipdir=${pyqt5_sip_dir} \
         --qsci-sipdir=$out/share/sip/PyQt5 \
         --sip-incdir=${sip_4}/include
     '';
  
positive.code: , qtbase
  }:
  with pythonPackages;
  buildPythonPackage {
    pname = "qscintilla";
    version = qscintilla.version;
    src = qscintilla.src;
  
negative.code:       "'$out/${python.sitePackages}'"
    '';
  
    pyqt5_sip_dir = if isPy3k then
      "${pyqt5}/${python.sitePackages}/PyQt5/bindings"
    else
      "${pyqt5}/share/sip/PyQt5";
  
    preConfigure = ''
      # configure.py will look for this folder
      mkdir -p $out/share/sip/PyQt5
  