gentoo-overlay/app-portage/layman/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>tools-portage</herd>
	<maintainer>
		<email>dolsen@gentoo.org</email>
		<name>Brian Dolbec</name>
	</maintainer>
	<use>
		<flag name="bazaar">Support <pkg>dev-vcs/bzr</pkg> based overlays</flag>
		<flag name="cvs">Support <pkg>dev-vcs/cvs</pkg> based overlays</flag>
		<flag name="darcs">Support <pkg>dev-vcs/darcs</pkg> based overlays</flag>
		<flag name="git">Support <pkg>dev-vcs/git</pkg> based overlays</flag>
		<flag name="mercurial">Support <pkg>dev-vcs/mercurial</pkg> based overlays</flag>
		<flag name="subversion">Support <pkg>dev-vcs/subversion</pkg> based overlays</flag>
	</use>
</pkgmetadata>