can't b/u to Rackspace Cloudfiles with Pyrax backend

[Morgan Read <mstuff read org nz>]

(Sorry for the cross-post - I sent this to the duplicity list
yesterday thinking that deja-dup was all forums.)

Hello List
I hope this is the best place to post - please point me somewhere else
otherwise.
I ran into these bugs a year or so ago:
https://bugzilla.redhat.com/show_bug.cgi?id=1654292
https://bugs.launchpad.net/deja-dup/+bug/1806490

I did 'pip install pyrax' after enabling legacy Rackspace Cloudfiles
backen and all seemed to work.

Just  a week or so ago, Deja Dup started throwing the same original error:
BackendException: Pyrax backend requires the pyrax library available
from Rackspace.
Exception: cannot import name _normalize_host

But, following the fixes in the above bugs, doesn't seem to be a fix
anymore.  Does anyone know what's changed and if it can be fixed?  Has
legacy become dead?  Is there alternative and if not... Does anyone
know how I can get my back-ups back from Rackspace Cloudfiles?

Thanks.

-- 
Morgan Read
P 07563-650.923
E mstuff read org nz