gentoo-overlay/dev-lang/swi-prolog/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
	<email>prolog@gentoo.org</email>
	<name>Prolog</name>
</maintainer>
<use>
	<flag name="archive">Use libarchive for extension packs</flag>
	<flag name="uuid">Use ossp-uuid for UUID pack</flag>
	<flag name="yaml">Use libyaml for YAML pack</flag>
</use>
</pkgmetadata>