gentoo-overlay/app-arch/wimlib/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<!-- maintainer-needed -->
	<use>
		<flag name="fuse">Use fuse libraries</flag>
		<flag name="iso">Install <pkg>app-cdr/cdrtools</pkg> in order to prepare iso images</flag>
		<flag name="ntfs">Use libntfs-3g library from <pkg>sys-fs/ntfs3g</pkg></flag>
		<flag name="yasm">Use yasm assembler instead of nasm</flag>
	</use>
</pkgmetadata>