virtual/mpi/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
	<herd>cluster</herd>
	<use>
		<flag name='romio'>Enable romio, a high-performance portable MPI-IO</flag>
	</use>
</pkgmetadata>