anchor.diff:    configureFlags = [
       "--enable-rebuilds"
       "--enable-glibtest"
  -    "--enable-introspection"
  +    (enFlag "introspection" (gobject-introspection != null) null)
       "--disable-gtk-doc"
       "--disable-gtk-doc-html"
       "--disable-gtk-doc-pdf"
  
positive.code: , glib
  , gobject-introspection
  }:
  
  stdenv.mkDerivation rec {
    name = "atk-${version}";
  
negative.code: 
    postInstall = "rm -rvf $out/share/gtk-doc";
  
    meta = with stdenv.lib; {
      description = "GTK+ & GNOME Accessibility Toolkit";
      homepage = http://library.gnome.org/devel/atk/;
  