anchor.diff:  in
   stdenv.mkDerivation rec {
     pname = "webp-pixbuf-loader";
  -  version = "0.0.6";
  +  version = "0.0.7";
   
     src = fetchFromGitHub {
       owner = "aruiz";
       repo = "webp-pixbuf-loader";
       rev = version;
  -    sha256 = "sha256-dcdydWYrXZJjo4FxJtvzGzrQLOs87/BmxshFZwsT2ws=";
  +    sha256 = "sha256-Za5/9YlDRqF5oGI8ZfLhx2ZT0XvXK6Z0h6fu5CGvizc=";
     };
   
     nativeBuildInputs = [
  -    gdk-pixbuf
  +    gdk-pixbuf.dev
       meson
       ninja
       pkg-config
  
positive.code:   ];
  
    mesonFlags = [
      "-Dgdk_pixbuf_query_loaders_path=${gdk-pixbuf.dev}/bin/gdk-pixbuf-query-loaders"
      "-Dgdk_pixbuf_moduledir=${placeholder "out"}/${moduleDir}"
    ];
  
  
negative.code:       --replace "@bindir@/gdk-pixbuf-thumbnailer" "$out/bin/webp-thumbnailer"
    '';
  
    postInstall = ''
      GDK_PIXBUF_MODULE_FILE="$out/${loadersPath}" \
      GDK_PIXBUF_MODULEDIR="$out/${moduleDir}" \
      gdk-pixbuf-query-loaders --update-cache
  
      # It assumes gdk-pixbuf-thumbnailer can find the webp loader in the loaders.cache referenced by environment variable, breaking containment.
      # So we replace it with a wrapped executable.
      mkdir -p "$out/bin"
  