gentoo-overlay/sys-boot/lilo/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>base-system</herd>
<use>
 <flag name='device-mapper'>Enable support for device-mapper from <pkg>sys-fs/lvm2</pkg></flag>
 <flag name='minimal'>Do not install the dolilo helper script</flag>
 <flag name='pxeserial'>Avoid character echo on PXE serial console</flag>
</use>
</pkgmetadata>