Archive fetch problem

[Jeremy Lavergne]

> That does not explain why MacPorts has to use that type when getting
> packages from the server. Why can't MacPorts handle getting tbz2 archives
> from a server and building tgz archives locally at the same time?

It would be interesting to "gracefully degrade" the download format e.g.,
txz then tbz2 then tgz.

Would we first try all formats at each archive site prior to moving to the
next?