gentoo-overlay/dev-lang/ruby/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>ruby@gentoo.org</email>
    <name>Gentoo Ruby Project</name>
  </maintainer>
  <use>
    <flag name="rdoc">Install <pkg>dev-ruby/rdoc</pkg> after installing Ruby.</flag>
    <flag name="systemtap">Enable SystemTAP/DTrace tracing</flag>
  </use>
  <upstream>
    <remote-id type="github">ruby/ruby</remote-id>
  </upstream>
</pkgmetadata>