gentoo-overlay/sys-fs/eudev/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
  <maintainer type="project">
    <email>eudev@gentoo.org</email>
  </maintainer>
  <use>
    <flag name="blkid">enable blkid support</flag>
    <flag name="efi">enable EFI support</flag>
    <flag name="hwdb">read vendor/device string database and add it to udev database</flag>
    <flag name="kmod">enable module loading through libkmod</flag>
    <flag name="smack">enable SMACK security model</flag>
    <flag name="rule-generator">install legacy rule generator rules and support scripts - note
    that the functionality within was dropped from sys-fs/udev as it is not stable in
    all cases; use at your own risk</flag>
  </use>
  <upstream>
    <remote-id type="github">gentoo/eudev</remote-id>
  </upstream>
</pkgmetadata>