anchor.diff:    nativeBuildInputs = [ cmake pkgconfig ];
   
     buildInputs = [
  -    qt5.qtbase qt5.qttools gimp fftw zlib libjpeg libtiff libpng opencv openexr graphicsmagick curl krita
  +    qt5.qtbase qt5.qttools gimp gdk_pixbuf fftw zlib libjpeg libtiff libpng
  +    opencv openexr graphicsmagick curl cairo krita
     ];
   
  -  qmakeFlags = [ "HOST=krita" ];
  +  cmakeFlags = [ "-DGMIC_QT_HOST=krita" ];
   
     installPhase = ''
       mkdir -p $out/bin;
  
positive.code:     chmod -R +w gmic gmic_qt
      ln -s ${CImg} CImg
  
      cp ${gmic_stdlib} gmic/gmic_stdlib.h
  
      make -C gmic/src CImg.h gmic_stdlib.h
      cd gmic_qt
  
negative.code: { stdenv, fetchurl, fetchFromGitHub, cmake, ninja, pkgconfig, qt5
  , opencv, openexr, graphicsmagick, fftw, zlib, libjpeg, libtiff, libpng
  , curl, krita, gdk_pixbuf, cairo
  , fetchgit, withGimpPlugin ? true, gimp }:
  
  let
  