--- gentoo/media-gfx/pixie/pixie-2.2.6-r1.ebuild	2012-03-10 10:19:20.000000000 +0100
+++ myrep/media-gfx/pixie/pixie-2.2.6-r1.ebuild	2015-01-26 04:47:00.000000000 +0100
@@ -55,6 +55,9 @@
 	# parallelism can break the regeneration process, with resulting
 	# missing shaders.
 	rm "${S}"/shaders/*.sdr
+
+	# FIX: flex does not translate variable name in custom YY_DECL
+	sed -i -e '/define YY_DECL/ s/yylval/riblval/' src/ri/rib.l
 }
 
 src_configure() {