Starting with poudriere

[George Hartzell]

Baptiste Daroussin writes:
 > 
 > You should really have a look at overlays which are supported in
 > poudriere-devel, it will allow you to get rid of portshaker with your use case:
 > 
 > https://reviews.freebsd.org/rP510950
 > 
 > in poudriere an overlay is just a "regular ports tree" appended via -O during
 > the bulk.

Neat, thanks for pointing that out!

How much of a "regular ports tree" does it need to be?  Can it just
include my local ports or does it need other elements of the tree
(e.g. it's own index files or ....)?

g.