Spack: Package manager for MPI Cluster

While working and managing my MPI Cluster, I wanted something which can easily manage my software packages and support multiple versions of the same package while also supporting multiple MPI implementations. I used to spend hours fixing the old builds and making sure the experiments I run work without anything bugging me. Few months back I found Spack, Spack is an open source flexible package manager to easily install software packages for your HPC environment. Some advantages which it offers which are great if someone is trying to create an HPC cluster: Spack is open source and can be installed quite easily. Many packages, containers like podman, apptainer can be found and installed using a single command. Spack supports multiple versions of the same package, for example you can install two separate versions of mpich and load whichever you want. Spack creates separate builds for each. Spack supports multiple implementations of software packages and handles loading and unloading of pa