gentoo-overlay/dev-perl/YAML-LibYAML/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
    <herd>perl</herd>
    <upstream>
        <remote-id type="cpan">YAML-LibYAML</remote-id>
        <remote-id type="cpan-module">YAML::LibYAML</remote-id>
        <remote-id type="cpan-module">YAML::XS</remote-id>
        <remote-id type="cpan-module">YAML::XS::LibYAML</remote-id>
    </upstream>
</pkgmetadata>