gentoo-overlay/sci-mathematics/yacas/metadata.xml

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <herd>sci-mathematics</herd>
  <longdescription lang="en">
  Yacas (Yet Another Computer Algebra System) is a small and highly
  flexible general-purpose computer algebra language. The syntax uses a
  infix-operator grammar parser. The distribution contains a small
  library of mathematical functions, but its real strength is in the
  language in which you can easily write your own symbolic manipulation
  algorithms.
  </longdescription>
  <use>
    <flag name="server">Build the network server version</flag>
  </use>
  <upstream>
    <remote-id type="sourceforge">yacas</remote-id>
  </upstream>
</pkgmetadata>