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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>base-system@gentoo.org</email>
		<name>Gentoo Base System</name>
	</maintainer>
	<use>
		<flag name="installkernel">
			Install /sbin/installkernel script (for Linux).
			installkernel is required whenever a kernel will be installed via make install
		</flag>
	</use>
</pkgmetadata>