-

    return func(*args, **kwargs)
  File "/usr/local/Cellar/mercurial/2.7.1/lib/python2.7/site-packages/mercurial/commands.py", line 4694, in push
    newbranch=opts.get('new_branch'))
  File "/Users/alex/Projects/hg-git/hggit/hgrepo.py", line 22, in push
    return git.push(remote.path, revs, force)
  File "/Users/alex/Projects/hg-git/hggit/git_handler.py", line 277, in push
    old_refs, new_refs = self.upload_pack(remote, revs, force)
  File "/Users/alex/Projects/hg-git/hggit/git_handler.py", line 891, in upload_pack
    new_refs = client.send_pack(path, changed, genpack)
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dulwich-0.9.1-py2.7-macosx-10.8-x86_64.egg/dulwich/client.py", line 445, in send_pack
    proto, unused_can_read = self._connect('receive-pack', path)
  File "/usr/local/Cellar/python/2.7.5/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/dulwich-0.9.1-py2.7-macosx-10.8-x86_64.egg/dulwich/client.py", line 801, in _connect
    con = get_ssh_vendor().run_command(
AttributeError: '_Vendor' object has no attribute 'run_command'

Just had this problem with hg-git.
The solution for me was to downgrade dulwich to 0.9.0:

sudo easy_install -m dulwich
sudo easy_install dulwich==0.9.0

Nice tip.
Thank you!

Thanks!

worked, thanks