Index: www/npm/Makefile
===================================================================
--- www/npm/Makefile
+++ www/npm/Makefile
@@ -12,8 +12,16 @@
 
 LICENSE=	MIT
 
-RUN_DEPENDS=	gmake:devel/gmake \
-		node>=0.8.0:www/node
+RUN_DEPENDS=	gmake:devel/gmake
+
+OPTIONS_SINGLE=	BACKEND
+OPTIONS_SINGLE_BACKEND=	NODE6 NODE
+OPTIONS_DEFAULT=	NODE
+NODE_DESC=	Use www/node as backend
+NODE6_DESC=	Use www/node6 as backend
+
+NODE_RUN_DEPENDS=	node>=0.8.0:www/node
+NODE6_RUN_DEPENDS=	node6>=0.8.0:www/node6
 
 CONFLICTS_INSTALL=	npm2 npm3 npm4