gentoo-overlay/gnome-extra/synapse/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<!-- maintainer-needed -->
	<use>
		<flag name="plugins">Build support for plugins using <pkg>net-libs/rest</pkg></flag>
	</use>
	<upstream>
		<remote-id type="launchpad">synapse-project</remote-id>
	</upstream>
</pkgmetadata>