gentoo-overlay/app-emulation/containers-storage/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="person">
		<email>zmedico@gentoo.org</email>
		<name>Zac Medico</name>
	</maintainer>
	<use>
		<flag name="btrfs">
			Enables dependencies for the "btrfs" graph driver, including
			necessary kernel flags.
		</flag>
		<flag name="device-mapper">
			Enables dependencies for the "devicemapper" graph driver, including
			necessary kernel flags.
		</flag>
	</use>
	<upstream>
		<remote-id type="github">containers/storage</remote-id>
	</upstream>
</pkgmetadata>