gentoo-overlay/www-client/surf/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <!-- maintainer-needed -->
  <use>
    <flag name="savedconfig">Without a saved config.h, this package depends on <pkg>net-misc/curl</pkg> and <pkg>x11-terms/st</pkg> for a default download mechanism</flag>
    <flag name="tabbed">Install surf-open.sh script for running surf in <pkg>x11-misc/tabbed</pkg></flag>
  </use>
</pkgmetadata>