Can't get sftp to work on Mac OS X or Cygwin

[John Whitley]

I'm seeing essentially identical sftp push failures from .bzr.log's  
perspective on both Cygwin and Mac OS X.  The error message is either  
unhelpful or outright misleading.  I've got paramiko-1.5.4 and  
pycrypto-2.0.1 installed on both systems, and can import these  
modules manually in python.  FYI, pycrypto's egg-based install seems  
to be broken on Cygwin -- it fails to make the .egg file executable,  
which causes the binary extension modules (e.g. Crypto.Cipher.DES3)  
to fail to load.

Generic repro steps
-------------------
$ ssh host.org
$ mkdir bzr; cd bzr
$ bzr init test
$ exit
$ mkdir bzr; cd bzr
$ bzr init test
$ cd test
$ echo "this is a test" > a-file.txt
$ bzr add
$ bzr commit -m "stuff"
$ bzr push sftp://host.org/bzr/test
bzr: ERROR: Parent directory of sftp://host.org/bzr/test does not exist.

Log output:
----------
bzr 0.8 invoked on python 2.4.1.final.0 (darwin)
   arguments: ['/usr/local/bin/bzr', 'push', 'sftp://bangpath.org/bzr/ 
rcfiles']
   working dir: u'/Users/whitley/src/rcfiles'
looking for plugins in /usr/local/lib/bzr-0.8/bzrlib/plugins
Plugin name __init__ already loaded
looking for plugins in /Users/whitley/.bazaar/plugins
got branch format Bazaar-NG Metadir branch format 5
ssh implementation is OpenSSH
trying to open u'sftp://bangpath.org/bzr/rcfiles' with transport  
<bzrlib.transport.sftp.SFTPTransport url=sftp://bangpath.org/bzr/ 
rcfiles/>
[20400] Wed 17:03:28.592 ERROR: Parent directory of sftp:// 
bangpath.org/bzr/rcfiles does not exist.
Traceback (most recent call last):
   File "/usr/local/lib/bzr-0.8/bzrlib/commands.py", line 650, in  
run_bzr_catch_errors
     return run_bzr(argv)
   File "/usr/local/lib/bzr-0.8/bzrlib/commands.py", line 612, in  
run_bzr
     ret = run(*run_argv)
   File "/usr/local/lib/bzr-0.8/bzrlib/commands.py", line 246, in  
run_argv_aliases
     return self.run(**all_cmd_args)
   File "/usr/local/lib/bzr-0.8/bzrlib/builtins.py", line 502, in run
     raise BzrCommandError("Parent directory of %s "
BzrCommandError: Parent directory of sftp://bangpath.org/bzr/rcfiles  
does not exist.



-- John