gentoo-overlay/dev-libs/nss/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>mozilla</herd>
<use>
  <flag name='cacert'>
    Include root certs from CAcert (http://http://www.cacert.org/) and
    Software in the Public Interest (http://www.spi-inc.org/)
  </flag>
  <flag name='nss-pem'>Add support for libnsspem</flag>
  <flag name='utils'>Install utilities included with the library</flag>
</use>
<upstream>
  <remote-id type="cpe">cpe:/a:mozilla:nss</remote-id>
</upstream>
</pkgmetadata>