gentoo-overlay/app-text/hyperestraier/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>cjk</herd>
<maintainer>
  <email>hattya@gentoo.org</email>
</maintainer>
<use>
  <flag name='mecab'>Enable <pkg>app-text/mecab</pkg> support
    for Estraier</flag>
</use>
</pkgmetadata>