anchor.diff:  , libtiff
   , libjpeg
   , libpng
  -, libX11
   , gnome3
   , gobject-introspection
   , doCheck ? false
  
positive.code:     fixDarwinDylibNames
    ];
  
    # !!! We might want to factor out the gdk-pixbuf-xlib subpackage.
    buildInputs = [
      libX11
    ];
  
    propagatedBuildInputs = [
      glib
      libtiff
  
negative.code: 
    mesonFlags = [
      "-Ddocs=true"
      "-Dx11=false" # use gdk-pixbuf-xlib
      "-Dgir=${if gobject-introspection != null then "true" else "false"}"
      "-Dgio_sniffing=false"
    ];
  