gentoo-overlay/app-emacs/bbdb/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>emacs</herd>
<longdescription>
  The Insidious Big Brother Database (BBDB) is a contact management utility
  for use with GNU Emacs and XEmacs. It can hook into Emacs-based mail- and
  news-readers and automatically collect information on messages therein.
</longdescription>
<use>
  <flag name='tex'>Install plain TeX support files</flag>
</use>
</pkgmetadata>