--- Makefile.orig	2015-11-26 22:04:04.324287268 +0100
+++ Makefile	2015-11-26 22:04:16.345286071 +0100
@@ -18,7 +18,7 @@
 
 CONFLICTS=	moodle28-2.8.[0-9]* moodle29-2.9.[0-9]*
 
-USES=		tar:tgz
+USES=	cpe	tar:tgz
 USE_PHP=	ctype curl dom gd hash iconv json mbstring opcache openssl pcre \
 		session simplexml soap spl tokenizer xml xmlrpc zip zlib
 WRKSRC=		${WRKDIR}/moodle