gentoo-overlay/sys-devel/gettext/metadata.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<herd>base-system</herd>
<use>
 <flag name="cvs">When running `autopoint`, use cvs to store the internal development files;
                  this requires cvs at runtime, but will be faster/smaller than raw archives</flag>
 <flag name="git">When running `autopoint`, use git to store the internal development files;
                  this requires git at runtime, but will be faster/smaller than raw archives</flag>
</use>
</pkgmetadata>