anchor.diff:  { mkDerivation
   , lib
   , extra-cmake-modules
  +, breeze-icons
  +, breeze-qt5
   , kdoctools
   , kconfig
   , kcrash
  
positive.code:     kdoctools
    ];
    buildInputs = [
      kconfig
      kcrash
      kdbusaddons
  
negative.code:     qtwebkit
      shared-mime-info
      libv4l
      ffmpeg-full
      frei0r
      rttr
      kpurpose
      kdeclarative
  