Bug#867278: mitmproxy: DistributionNotFound: The 'typing==3.5.2.2' distribution was not found and is required by mitmproxy

[Jakub Wilk]

Package: mitmproxy
Version: 0.18.2-6
Severity: serious
Justification: Policy §3.5

After upgrading python-typing to 3.6.1-1, mitmproxy broke completely:

$ mitmproxy --help
Traceback (most recent call last):
 File "/usr/bin/mitmproxy", line 6, in <module>
   from pkg_resources import load_entry_point
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3037, in 
<module>
   @_call_aside
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3021, 
in _call_aside
   f(*args, **kwargs)
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3050, 
in _initialize_master_working_set
   working_set = WorkingSet._build_master()
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 657, 
in _build_master
   return cls._build_from_requirements(__requires__)
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 670, 
in _build_from_requirements
   dists = ws.resolve(reqs, Environment())
 File "/usr/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 855, 
in resolve
   raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'typing==3.5.2.2' distribution was not 
found and is required by mitmproxy


-- System Information:
Versions of packages mitmproxy depends on:
ii  python                               2.7.13-2
ii  python-backports.ssl-match-hostname  3.5.0.1-1
ii  python-blinker                       1.3.dfsg2-1
ii  python-brotli                        0.6.0-1
ii  python-certifi                       2017.4.17-1
ii  python-click                         6.6-1
ii  python-configargparse                0.11.0-1
ii  python-construct                     2.8.8+really2.5.2-0.1
ii  python-cryptography                  1.9-1
ii  python-cssutils                      1.0-4.1
ii  python-flask                         0.12.2-1
ii  python-h2                            2.5.2-1
ii  python-hpack                         2.3.0-1
ii  python-html2text                     2016.9.19-1
ii  python-hyperframe                    4.0.1-1
ii  python-jsbeautifier                  1.6.4-6
ii  python-lxml                          3.8.0-1+b1
ii  python-openssl                       16.2.0-1
ii  python-passlib                       1.7.1-1
ii  python-pil                           4.1.1-3
ii  python-pyasn1                        0.1.9-2
ii  python-pyparsing                     2.1.10+dfsg1-1
ii  python-pyperclip                     1.5.27-2
ii  python-requests                      2.12.4-1
ii  python-six                           1.10.0-4
ii  python-tornado                       4.5.1-2+b1
ii  python-typing                        3.6.1-1
ii  python-urwid                         1.3.1-2+b2
ii  python-watchdog                      0.8.3-2

--
Jakub Wilk