gentoo-overlay/kde-base/kdebase-meta/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>kde</herd>
	<use>
		<flag name="display-manager">Pull in a graphical display manager</flag>
		<flag name="wallpapers">Install the KDE wallpapers</flag>
	</use>
</pkgmetadata>