Downstream modules management
Discussion
I just created a package for dune-randomfield@2.6
in spack and have literally no idea where to put it. So, this issue is for discussion on how downstream DUNE modules should be managed. I guess the ideal would be to always to merge to the upstream spack once a package is polished enough. Meanwhile, where downstream DUNE module packages should be stored? Here? Within the packaged module? In its own repository? Or is foreseen that the upstream merge will happen quick enough so that we don't have to worry about that?