gentoo-overlay/media-libs/memphis/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer>
    <email>jlec@gentoo.org</email>
  </maintainer>
  <use>
    <flag name="introspection">Use dev-libs/gobject-introspection for introspection</flag>
    <flag name="vala">Add support for Vala</flag>
  </use>
</pkgmetadata>