gentoo-overlay/app-emulation/vice/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>games</herd>
<use>
	<flag name='ethernet'>Enable ethernet emulation</flag>
	<flag name='memmap'>Enable extra monitor features</flag>
	<flag name='xrandr'>Enable support for the X xrandr extension</flag>
</use>
</pkgmetadata>