gentoo-overlay/net-misc/teamviewer/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>proxy-maintainers</herd>
        <maintainer>
                <email>dct23@cornell.edu</email>
                <name>Devrin Talen</name>
                <description>Proxy maintainer. Assign bugs to him</description>
        </maintainer>
	<use>
		<flag name="system-wine">Use <pkg>app-emulation/wine</pkg> instead of bundled one.</flag>
	</use>
</pkgmetadata>