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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>gnome</herd>
	<use>
		<flag name="compat">Installs gdialog for compatibility with older shell
			scripts which uses <pkg>dev-lang/perl</pkg></flag>
	</use>
</pkgmetadata>