gentoo-overlay/app-eselect/eselect-wine/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>wine@gentoo.org</email>
		<name>Wine</name>
	</maintainer>
	<stabilize-allarches/>
	<use>
		<flag name="xdg">
			Set XDG_DATA_DIRS to use the selected wine.desktop,
			allows e.g. 'xdg-open my.exe' for file managers
		</flag>
	</use>
	<upstream>
		<remote-id type="gentoo">proj/eselect-wine</remote-id>
	</upstream>
</pkgmetadata>