gentoo-overlay/mate-extra/mate-power-manager/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
    <maintainer type="project">
        <email>mate@gentoo.org</email>
        <name>Gentoo MATE Desktop</name>
    </maintainer>
	<use>
		<flag name="applet">Enable building of the MATE applet.</flag>
		<flag name="gtk3">Build with GTK+3 instead of GTK+2</flag>
		<flag name="man">Build power manager's man page.</flag>
		<flag name="pm-utils">Adds support for suspend/resume using
			<pkg>sys-power/upower-pm-utils</pkg> instead of
			<pkg>sys-power/upower</pkg></flag>
		<flag name="unique">Enable single instance support using 
		<pkg>dev-libs/libunique</pkg>.</flag>
	</use>
    <upstream>
        <remote-id type="github">mate-desktop/mate-power-manager</remote-id>
    </upstream>
</pkgmetadata>