Shared distfiles over NFS for several machines

[Silas <silas%nocafe.net@localhost>]

Hi!

I was just curious if some of you might have this problem: I have 
several machines that build packages for different operating systems and 
architectures.  Downloading distfiles over and over again doesn't sound 
a good idea so I was thinking about having distfiles shared over NFS.  
The problem is that different machines might try to download the file at 
the same time, possibly causing some conflict for the downloaded file.  
AFAIK, pkgsrc doesn't have anything like a lock for it, does it?

One solution would be to download all files with "make fetch-list | sh" 
but I'd have to wait for all distfiles to be downloaded before starting 
to building them.

(Must of the time I'll be using pbulk, but I believe the problem is the 
same, no?).

--
Silas