anchor.diff:                   opencv
                    libraw
                    libtiff
  -                 quazip
  -                 gsettings-desktop-schemas];
  +                 quazip];
   
     cmakeFlags = ["-DENABLE_OPENCV=ON"
                   "-DENABLE_RAW=ON"
  
positive.code:   '';
  
    nativeBuildInputs = [cmake
                         pkgconfig
                         wrapGAppsHook];
  
    buildInputs = [qtbase
                   qttools
  
negative.code: { stdenv
  , mkDerivation
  , fetchFromGitHub
  , cmake
  , pkgconfig
  
  , qtbase
  , qttools
  