--- /usr/portage/dev-lang/rakudo/rakudo-2014.11-r1.ebuild	2014-11-25 13:47:46.000000000 +0900
+++ rakudo-2014.11-r2.ebuild	2014-11-26 16:23:38.347596843 +0900
@@ -33,7 +33,9 @@
 	perl Configure.pl --backends=${myconf} --prefix=/usr || die
 
 	# why doesn't ops2c get detected?! :(
-	use parrot && sed -i -e 's~OPS2C            = $(PARROT_BIN_DIR)/$(EXE)~OPS2C            = $(PARROT_BIN_DIR)/ops2c~' Makefile || die
+	if use parrot; then
+		sed -i -e 's~OPS2C            = $(PARROT_BIN_DIR)/$(EXE)~OPS2C            = $(PARROT_BIN_DIR)/ops2c~' Makefile || die
+	fi
 }
 
 src_test() {