anchor.diff:  
     buildInputs = [
       qtbase
  +    qtimageformats
  +    qtsvg
     ];
   
     patchPhase = ''
  
positive.code: { mkDerivation, lib, fetchFromGitHub, qmake, qtbase }:
  
  mkDerivation rec {
    pname = "qview";
  
negative.code:   meta = with lib; {
      description = "Practical and minimal image viewer";
      homepage = "https://interversehq.com/qview/";
      license = licenses.gpl3Plus;
      maintainers = with maintainers; [ acowley ];
      platforms = platforms.all;
    };
  