If I understand rig correctly, it works on the premise the entire system runs on the same R version correct?

So when I change the default, that will change it for all users?

At the moment I am working with a couple with others on an on-prem server. We want to use different R versions for different projects, and while rig is handy for installing them, we found the only way to set our own R version defaults was to create our own personal symlinks to the desired version in /opt/R and add them to our PATH. Kind of what rig is meant to do anyway?

Could there a mode where rig could set the default version on a per-user basis?