On the performance of building D programs

[Martin Nowak]

> So pass -rxvibe vibe.lib on the first invocation. I think we're 
> in
> some kind of miscommunication..

You don't know that something uses vibe untilyou actually compile 
it.
Passing every cached library to the compiler is not a feasible 
approach. How do you pass the relevant linker flags to the 
compiler? How do you support parallelization?
Using IPC to negotiate this could handle these problems. You 
could think of it as using the compiler as library if you want to.