--- metadata.xml.orig	2013-11-27 17:59:32.451843333 +0100
+++ metadata.xml	2013-11-27 15:17:56.373643005 +0100
@@ -3,4 +3,7 @@
 <pkgmetadata>
 <herd>net-mail</herd>
 <longdescription>Abook is a text-based addressbook program designed to use with mutt mail client.</longdescription>
+<use>
+<flag name="vcf">Use dev-libs/libvformat to provide enhanced vcard import support</flag>
+</use>
 </pkgmetadata>