gentoo-overlay/xfce-extra/xfce4-pulseaudio-plugin/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<maintainer type="project">
		<email>xfce@gentoo.org</email>
		<name>XFCE Team</name>
	</maintainer>
	<use>
		<flag name="keybinder">Enable support for global hotkeys using
			<pkg>dev-libs/keybinder</pkg>.</flag>
		<flag name="libcanberra">Enable sound event support using
			<pkg>media-libs/libcanberra</pkg></flag>
		<flag name="libxfce4windowing">Enable experimental support for raising media
			player windows using <pkg>xfce-base/libxfce4windowing</pkg>.</flag>
		<flag name="wnck">Enable experimental support for raising media
			player windows using <pkg>x11-libs/libwnck</pkg>.</flag>
	</use>
</pkgmetadata>