Yeah, my understanding is when ARM support is added, we'll add a field to the pkgdef file that you can specify architecture. Any apps missing that field can be

Yeah, my understanding is when ARM support is added, we'll add a field to the pkgdef file that you can specify architecture. Any apps missing that field can be assumed to be x64. spk and vagrant-spk definitely take the "grab what the app needs" approach, but Ian is in agreement with you in wanting something more reproducible and well-defined. (vagrant-spk is mostly reproducible because VMs made with it should be roughly the same, spk is not remotely reproducible). docker-spk is a tool he wrote that creates Sandstorm app packages from specially-crafted Docker images (you still have to be writing a Sandstorm package here, it won't convert a traditional Dockerfile to work on Sandstorm, for instance). He has also repeatedly expressed interest in building a nix-spk tool that uses Nix packages. ;)