Changes in CI file allow to use existing spack deployments w/o cache.

Eric Müller authored 3 months ago and Eleni Mathioulaki committed 2 months ago

This introduces a submodule for yashchiki.

We need to check if the flexibility of the script is actually needed.
(And how this ever could have worked with a moving target spack ;).)

by adding test dependencies in the hash calculation (see spack@01330d63) we can avoid the workaround of removing the lockfile every time before spack install --test root

spack fetch --missing fails when there are no missing packages