hypre: don't hardcode blas/lapack/mpi; optionally run tests
hypre: don't hardcode blas/lapack/mpi; optionally run tests

EmreAtes/spack,EmreAtes/spack,skosukhin/spack,TheTimmy/spack,tmerrick1/spack,TheTimmy/spack,tmerrick1/spack,iulian787/spack,mfherbst/spack,EmreAtes/spack,krafczyk/spack,lgarren/spack,EmreAtes/spack,matthiasdiener/spack,lgarren/spack,lgarren/spack,tmerrick1/spack,matthiasdiener/spack,lgarren/spack,mfherbst/spack,TheTimmy/spack,LLNL/spack,TheTimmy/spack,LLNL/spack,matthiasdiener/spack,krafczyk/spack,TheTimmy/spack,skosukhin/spack,LLNL/spack,skosukhin/spack,LLNL/spack,tmerrick1/spack,krafczyk/spack,mfherbst/spack,EmreAtes/spack,iulian787/spack,tmerrick1/spack,krafczyk/spack,skosukhin/spack,skosukhin/spack,matthiasdiener/spack,LLNL/spack,mfherbst/spack,lgarren/spack,iulian787/spack,iulian787/spack,matthiasdiener/spack,mfherbst/spack,krafczyk/spack,iulian787/spack