--- /usr/portage/games-board/knights/knights-0.6.ebuild	2005-11-03 00:05:40.000000000 +0100
+++ knights-0.6-r1.ebuild	2006-01-23 08:38:01.000000000 +0100
@@ -23,6 +23,11 @@
 need-kde 3
 
 src_unpack() {
+	if ! use arts; then
+		einfo "arts use flag is not set. "
+		einfo "kdelibs should be built with this USE flag on. "
+		einfo "If ${P} does not emerge try enabling it, and rebuilding the world"
+	fi
 	unpack ${A}
 	cd "${S}"
 	epatch "${FILESDIR}/${PV}-gcc34.patch"