<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> <pkgmetadata> <maintainer type="project"> <email>sci@gentoo.org</email> <name>Gentoo Science Project</name> </maintainer> <use> <flag name="qd">Use <pkg>sci-libs/qd</pkg> for quad-double datatype</flag> </use> </pkgmetadata>