[ebuild  N     ] sci-libs/hdf5-2.2.0:0/320-cmake::gentoo USE="hl threads zlib -cxx -debug -fortran -mpi -szip -test -unsupported" 40.2 MiB
[ebuild  N     ] sci-libs/med-5.0.0::gentoo USE="-doc -fortran -mpi -test" 45.2 MiB

Total: 2 packages (2 new), Size of downloads: 85.3 MiB


 * Running sanity checks...
>>> sci-libs/hdf5-2.2.0: failed REQUIRED_USE
  Failed to match: !hl
  from: at-most-one-of ( cxx mpi ) !cxx !mpi !fortran !hl
  for USE: abi_x86_64 amd64 elibc_glibc hl kernel_linux llvm_targets_X86 split-usr test-rust threads zlib

!!! Sanity checks failed, exiting...