Arch Linux

The most recent update to python2-hpack, from 2.0.1-1 to 2.1.0-1, breaks python2-netlib and applications using it, e.g. mitmproxy:

$ pacman -Q python2-netlib mitmproxy
python2-netlib 0.15.1-2
mitmproxy 0.15-3

$ sudo pacman -Syu
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
multilib is up to date
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...

Package (1) Old Version New Version Net Change

community/python2-hpack 2.0.1-1 2.1.0-1 0,01 MiB

Total Installed Size: 0,15 MiB
Net Upgrade Size: 0,01 MiB

:: Proceed with installation? [Y/n]
(1/1) checking keys in keyring [########################] 100%
(1/1) checking package integrity [########################] 100%
(1/1) loading package files [########################] 100%
(1/1) checking for file conflicts [########################] 100%
(1/1) checking available disk space [########################] 100%
:: Processing package changes...
(1/1) upgrading python2-hpack [########################] 100%

$ mitmproxy -p 8888
Traceback (most recent call last):
File "/usr/bin/mitmproxy", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3141, in <module>
@_call_aside
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3127, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3154, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 642, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 655, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/lib/python2.7/site-packages/pkg_resources/__init__.py", line 828, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'hpack<2.1,>=2.0.1' distribution was not found and is required by netlib