The new hwloc api is not supported yet, upstream is working on it.
https://lists.mpich.org/pipermail/discuss/2017-November/005333.html
Fixes #665752.
Package-Manager: Portage-2.3.40, Repoman-2.3.9
COMMON_DEPEND="
dev-libs/libaio
- sys-apps/hwloc
+ <sys-apps/hwloc-2
romio? ( net-fs/nfs-utils )"
DEPEND="${COMMON_DEPEND}
COMMON_DEPEND="
>=dev-libs/libaio-0.3.109-r5[${MULTILIB_USEDEP}]
- >=sys-apps/hwloc-1.10.0-r2[${MULTILIB_USEDEP}]
+ <sys-apps/hwloc-2[${MULTILIB_USEDEP}]
romio? ( net-fs/nfs-utils )"
DEPEND="${COMMON_DEPEND}