post_src_unpack() {
	if use arm64 || use ppc64; then
		einfo "hooked by ${BASH_SOURCE[0]} in ${FUNCNAME[0]}"
		local patchfile
		patchfile="${PORTAGE_CONFIGROOT%/}/etc/portage/patches/genkernel-ppc64-iso.patch"
		if [[ -f ${patchfile} ]]; then
			einfo "found genkernel patch for bug https://bugs.gentoo.org/796272"
			cd "${S}" || die
			eapply "${patchfile}"
		else
			ewarn "no genkernel patch found, skipping hook"
		fi
	fi
}

post_pkg_postinst() {
	einfo "hooked by ${BASH_SOURCE[0]} in ${FUNCNAME[0]}"
	einfo "cleaning up bug https://bugs.gentoo.org/796272 workarounds"
	# cleanup after ourselves, we don't want workarounds shipped to users
	# and don't want updating all the spec files with new removal directives.
	local envfile patchfile
	envfile="${PORTAGE_CONFIGROOT%/}/etc/portage/env/sys-kernel/genkernel"
	patchfile="${PORTAGE_CONFIGROOT%/}/etc/portage/patches/genkernel-ppc64-iso.patch"
	
	local _x
	for _x in "${envfile}" "${patchfile}"; do
		if [[ -f ${_x} ]]; then
			rm -vf "${_x}"
		fi
	done
	rmdir -v --ignore-fail-on-non-empty "${PORTAGE_CONFIGROOT%/}/etc/portage/env/sys-kernel"
	rmdir -v --ignore-fail-on-non-empty "${PORTAGE_CONFIGROOT%/}/etc/portage/env"
	rmdir -v --ignore-fail-on-non-empty "${PORTAGE_CONFIGROOT%/}/etc/portage/patches"
}
	
