[pdimitar]

IMO we need a new runtime OS/system library for it. People have commented here that LD_PRELOAD wouldn't work so I suppose we need a software with which you can force a program to only see the libc.so you want it to see -- as a start.

Bringing in a new programming language might be valuable for it in the future but at least off the top of my head I can't see why can't this model be adapted relatively easily in most languages today.