gentoo-overlay/app-misc/geoclue/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
	<email>gnome@gentoo.org</email>
	<name>Gentoo GNOME Desktop</name>
</maintainer>
<use>
	<flag name="modemmanager">Enable geolocation through 3G or GPS enabled hardware through <pkg>net-misc/modemmanager</pkg>.</flag>
	<flag name="zeroconf">Enable retrieval of GPS location from Android devices with https://wiki.gnome.org/Apps/GeoclueShare</flag>
</use>
</pkgmetadata>