Scaling rdmd up: build package at a time

[Andrei Alexandrescu via Digitalmars-d]

This is a self-contained and really fun project:

https://issues.dlang.org/show_bug.cgi?id=14654

It requires an understanding of how rdmd currently works (<1KLOC in a 
single module!) and is of huge impact.

Who'd want to get into it? I would if I didn't already have 
std.allocator to have fun with.

(Speaking of which: regions that grow upwards or downwards depending on 
stack growth direction for cache hotness, yum! 
http://erdani.com/d/phobos-prerelease/std_experimental_allocator_region.html)


Andrei