gentoo-overlay/sys-apps/ipmitool/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>sysadmin</herd>
  <use>
    <flag name='openipmi'>Use the system OpenIPMI implementation.</flag>
    <!-- <flag name='freeipmi'>Use the system FreeIPMI implementation.</flag> -->
  </use>
</pkgmetadata>