gentoo-overlay/dev-util/schroot/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="person">
  <email>jcallen@gentoo.org</email>
  <name>Jonathan Callen</name>
</maintainer>
<use>
  <flag name="btrfs">Enable support for chroots using btrfs snapshots.</flag>
  <flag name="dchroot">Enables the building of a wrapper named "dchroot", replacing <pkg>sys-apps/dchroot</pkg>.</flag>
  <flag name="lvm">Enable support for chroots using LVM snapshots.</flag>
</use>
</pkgmetadata>