I am actually not sure. I currently cannot oversee the consequences.

I am also a bit surprised. Your changes to the debugaligntest are actually included in 2.10. The jobs are identical. What has changed are the toolc...

I think you want to be able to move data into the future. However, you provide the data it's forwarded to the future. See https://gitlab.dune-proje...

@santiago.ospina @simon.praetorius If you are both sure this will not be a problem for any downstream users, I can change it and hard-code the new ...

I am wondering, why is this a forwarding reference at all?

I think this approach directly will not work (DUNE_ENABLE_PYTHONBINDINGS could be anything even an empty string or something including _NOT_FOUND) ...

I think dune_buildsystem_minimum_required would be great.

For instance in dune-grid, if we directly hard-code the new policy, dune-uggrid would disappear from the dependency list. Essentially in all module...

Yes, maybe we don't need a policy for this one....

I prefer named arguments. Makes it easier to extend the interface in the future if necessary.