gentoo-overlay/mate-base/mate-file-manager/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer>
		<email>TomWij@gentoo.org</email>
		<name>Tom Wijsman</name>
	</maintainer>
	<use>
		<flag name="mate">Install <pkg>x11-themes/mate-icon-theme</pkg> which 
		is needed when this package is used in the MATE desktop 
		environment.</flag>
		<flag name="unique">Enable single instance support using 
		<pkg>dev-libs/libunique</pkg>.</flag>
	</use>
</pkgmetadata>