Add bare (no container) install for NCI

[ScottWales]

Add an installation method not using a container at NCI. This can help during package development as all of the Spack builds are on the local filesystem rather than the compute nodes' temporary disks so inspection is easier. It has the downside of installs having a much higher inode count.

To the user the container and bare environments appear exactly the same, in both cases the envrun script will ensure the environment is loaded for a command.

[ScottWales]

Fixed some incompatibilities with using packages built for the container in a bare install. @hiker could you please give the bare install a go and let me know how it goes?

[hiker]

@ScottWales Now I get:

UN spack concretize --fresh
==> Error: cannot load package 'blitz' from the 'ngmo' repository: FilePatch: Patch file fujitsu_compiler_specfic_header.patch for package ngmo.blitz does not exist.

I did a clean rebuild (after previously trying to just update), same effect.

Directory: /scratch/dp9/jxh903/ngmo-envs

[ScottWales]

That's my mess up with git I think - I put some changes in the wrong branch. I've force-pushed a fix, you may need to delete your local branch to pick it up:

git checkout main
git branch -D nci-bare
git checkout nci-bare