# We need to merge our package manager with USE="build" set in case it is
# portage to avoid frying our /etc/make.conf file. Otherwise, we could
# just let emerge system could merge it.
+ # Use --update or portage won't reinstall the same version.
[ -e /etc/make.conf ] && echo 'USE="${USE} build"' >> /etc/make.conf
- run_merge --oneshot --nodeps sys-apps/portage
+ run_merge --oneshot --nodeps --update sys-apps/portage
sed -i '/USE="${USE} build"/d' /etc/make.conf
}