[Duplicity-talk] Can't find _librsync?

[Scott Hannahs]

Mac OS X 10.6 and Python 2.6

I have beat my head on this a bit and seem not to be able to figure out why 
duplicity can't find this library.  Duplicity seems to be looking for the 
library _librsync which as far as I can tell does not exist.  This is called 
from the librsync.py which does exist.  When I run duplicity I get the 
following traceback:

% export PYTHONPATH=/usr/local/lib/python2.6/site-packages:/sw/lib/
% /usr/local/bin/duplicity --encrypt-key XXXXXXXX --sign-key YYYYYYYY 
--gpg-options='--default-key=ZZZZZZZZ' $HOME/Documents/ file:///tmp/Documents/
Traceback (most recent call last):
  File "/usr/local/bin/duplicity", line 41, in <module>
    from duplicity import collections
  File "/usr/local/lib/python2.6/site-packages/duplicity/collections.py", line 
29, in <module>
    from duplicity import path
  File "/usr/local/lib/python2.6/site-packages/duplicity/path.py", line 33, in 
<module>
    from duplicity import librsync
  File "/usr/local/lib/python2.6/site-packages/duplicity/librsync.py", line 37, 
in <module>
    blocksize = _librsync.RS_JOB_BLOCKSIZE
NameError: name '_librsync' is not defined

I have set the PYTHONPATH variable and if I check, it seems that /sw/lib is in 
my path correctly if I print sys.path.

At /sw/lib exist both librsync.a and librsync.dylib

Just for completeness here is the build command for duplicity that I use to 
reference the librsync that I installed with fink.

sudo python setup.py install --prefix=/usr/local --librsync-dir=/sw

It appears that the librsync.py code tries to load the _librsync module and 
then skips over it if that fails.  Then when it tries to reference a variable 
inside that module it has problems.  I am sure that there is something really 
obvious here, but I just don't see it.

Thanks in advance.

Scott