gentoo-overlay/app-admin/pwgen/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>livecd</herd>
  <use>
    <flag name="livecd">Install init script for root password scrambling on boot</flag>
  </use>
  <upstream>
    <remote-id type="sourceforge">pwgen</remote-id>
  </upstream>
</pkgmetadata>