feat: merge topo sorted cherry-picks
Instead of requiring the user to specify cherry-picks in spack.sh in a mergable order, this ensures that cherry-picks are applied in topo order in the container. Cherry-picks can be specified in any order now.
Instead of requiring the user to specify cherry-picks in spack.sh in a mergable order, this ensures that cherry-picks are applied in topo order in the container. Cherry-picks can be specified in any order now.