Buiid/install stages documentation?

[Ryan Schmidt]

On Apr 17, 2018, at 12:39, Perry E. Metzger wrote:

> Just to be clear: I know what is in:
> https://guide.macports.org/#reference.phases
> 
> but I'm trying to figure out a bit more detail. In particular, I
> _suspect_ what I want is to trick opam into installing its build
> products into the destdir, but I'm not sure that's the right
> approach.

Certainly, at minimum, that would be needed. 

What else do you want to know?