r-fnn: Create new package (#6384)
r-fnn: Create new package (#6384)


EmreAtes/spack,mfherbst/spack,LLNL/spack,LLNL/spack,tmerrick1/spack,LLNL/spack,LLNL/spack,EmreAtes/spack,krafczyk/spack,iulian787/spack,krafczyk/spack,mfherbst/spack,matthiasdiener/spack,tmerrick1/spack,iulian787/spack,iulian787/spack,LLNL/spack,matthiasdiener/spack,matthiasdiener/spack,iulian787/spack,tmerrick1/spack,krafczyk/spack,mfherbst/spack,EmreAtes/spack,matthiasdiener/spack,matthiasdiener/spack,tmerrick1/spack,EmreAtes/spack,EmreAtes/spack,mfherbst/spack,krafczyk/spack,mfherbst/spack,iulian787/spack,krafczyk/spack,tmerrick1/spack