bzr-fastimport version 0.13.0-5
python2-fastimport version 0.9.4-1
bzr version 2.7.0-1

From a bazaar repo:

$ bzr fast-import .

bzr: ERROR: exceptions.ImportError: cannot import name invert_dict

Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/bzrlib/commands.py", line 930, in exception_to_return_code
return the_callable(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/bzrlib/commands.py", line 1121, in run_bzr
ret = run(*run_argv)
File "/usr/lib/python2.7/site-packages/bzrlib/commands.py", line 673, in run_argv_aliases
return self.run(**all_cmd_args)
File "/usr/lib/python2.7/site-packages/bzrlib/commands.py", line 697, in run
return self._operation.run_simple(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/bzrlib/cleanup.py", line 136, in run_simple
self.cleanups, self.func, *args, **kwargs)
File "/usr/lib/python2.7/site-packages/bzrlib/cleanup.py", line 166, in _do_with_cleanups
result = func(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/bzrlib/plugins/fastimport/cmds.py", line 288, in run
info = self._generate_info(source)
File "/usr/lib/python2.7/site-packages/bzrlib/plugins/fastimport/cmds.py", line 311, in _generate_info
from bzrlib.plugins.fastimport.processors import info_processor
File "/usr/lib/python2.7/site-packages/bzrlib/plugins/fastimport/processors/info_processor.py", line 25, in <module>
from fastimport.helpers import (
ImportError: cannot import name invert_dict

bzr 2.7.0 on python 2.7.11 (Linux-4.5.1-1-ARCH-x86_64-with-glibc2.2.5)
arguments: ['/usr/bin/bzr', 'fast-import', '.']
plugins: bash_completion[2.7.0], changelog_merge[2.7.0], etckeeper[unknown],
fastimport[0.13.0], grep[2.7.0], launchpad[2.7.0],
netrc_credential_store[2.7.0], news_merge[2.7.0], po_merge[2.7.0],
rewrite[0.6.4dev], weave_fmt[2.7.0]
encoding: 'utf-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'

*** Bazaar has encountered an internal error. This probably indicates a
bug in Bazaar. You can help us fix it by filing a bug report at
https://bugs.launchpad.net/bzr/+filebug
including this traceback and a description of the problem.