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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="person">
    <email>grozin@gentoo.org</email>
  </maintainer>
  <longdescription lang="en">
    A fast and small cross-platform XML/CSS based eBook reader for desktops and handheld devices.
    Supported formats: FB2, TXT, RTF, DOC, TCR, HTML, EPUB, CHM, PDB, MOBI.
  </longdescription>
  <use>
    <flag name="wxwidgets">Use <pkg>x11-libs/wxGTK</pkg> instead of Qt5</flag>
  </use>
  <upstream>
    <remote-id type="sourceforge">crengine</remote-id>
  </upstream>
</pkgmetadata>