gentoo-overlay/app-arch/file-roller/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>gnome@gentoo.org</email>
		<name>Gentoo GNOME Desktop</name>
	</maintainer>
	<use>
		<flag name="nautilus">Build contextual menu extension for
			<pkg>gnome-base/nautilus</pkg>.</flag>
	</use>
	<upstream>
		<remote-id type="sourceforge">fileroller</remote-id>
		<remote-id type="cpe">cpe:/a:paolo_bacchilega:file_roller</remote-id>
	</upstream>
</pkgmetadata>