anchor.diff:  
   stdenv.mkDerivation rec {
     pname = "gegl";
  -  version = "0.4.26";
  +  version = "0.4.28";
   
     outputs = [ "out" "dev" "devdoc" ];
     outputBin = "dev";
   
     src = fetchurl {
       url = "https://download.gimp.org/pub/gegl/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
  -    sha256 = "sha256-DzceLtK5IWL+/T3edD5kjKCKahsrBQBIZ/vdx+IR5CQ=";
  +    sha256 = "sha256-HRENhXfVTMo7NCOTFb03xXzLJ91DVWVQdKLSs/2JeQA=";
     };
  -
  -  patches = [
  -    # fix build with darwin: https://github.com/NixOS/nixpkgs/issues/99108
  -    # https://gitlab.gnome.org/GNOME/gegl/-/merge_requests/83
  -    (fetchpatch {
  -      url = "https://gitlab.gnome.org/GNOME/gegl/-/merge_requests/83.patch";
  -      sha256 = "sha256-CSBYbJ2xnEN23xrla1qqr244jxOR5vNK8ljBSXdg4yE=";
  -    })
  -  ];
   
     nativeBuildInputs = [
       pkg-config
  
positive.code:     vala
      gobject-introspection
      gtk-doc
      docbook_xsl
      docbook_xml_dtd_43
    ];
  
  
negative.code: , librsvg
  , lensfun
  , libspiro
  , maxflow
  , netsurf
  , pango
  , poly2tri-c
  