Added IUSE="" as said in the ebuild howto

dummy-sources-1.0.ebuild (text/plain), 614 bytes, created by Florian Huber on 2003-07-27 12:53:19 UTC

# Copyright 1999-2002 Gentoo Technologies, Inc.
# Written by Florian Huber <[e-mail]>
# Distributed under the terms of the GNU General Public License v2

DESCRIPTION="Dummy kernel package to provide virtual/linux-sources"
KEYWORDS="~x86 ~ppc ~sparc ~alpha"
IUSE=""

PROVIDE="virtual/linux-sources"
src_install() {
	einfo "******************************************************************"
	einfo " ${P} installed..."
	einfo " This ebuild does nothing except"
	einfo " satisfying virtual/linux-sources dependencies"
	einfo "******************************************************************"
}