gentoo-overlay/dev-perl/gnome2-wnck/metadata.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>perl</herd>
  <upstream>
    <remote-id type="cpan">Gnome2-Wnck</remote-id>
    <remote-id type="cpan-module">Gnome2::Wnck</remote-id>
    <remote-id type="sourceforge">gtk2-perl</remote-id>
  </upstream>
</pkgmetadata>