I think this is still not defined, is it?

I think this should go into spec.yaml rather

why does it matter how files are name? metadata is inside...

s/defined/decided/

Thanks for taking the time but since this is all about policies, I think this should go into the previously agreed location, i.e. the modularity docs: https://pagure.io/modularity/

note that this sucks because when you do dnf install, you should be able to omit stream / arch and in this case it becomes impossible... we are back to hyphens troubles

This seems to have stalled out. Should it be closed?

Yes, yes it should. This was addressed in https://pagure.io/modularity/pull-request/43