Arch Linux

Description:
Celery can't run because it requires: billiard<3.4,>=3.3.0.23
Current archlinux python-billiard package version is 3.5.0.0

Steps to reproduce:
* pacman -Sy python-celery
* celery

Traceback (most recent call last):
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 635, in _build_master
ws.require(__requires__)
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 943, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 834, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (billiard 3.5.0.0 (/usr/lib/python3.5/site-packages), Requirement.parse('billiard<3.4,>=3.3.0.23'), {'celery'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/bin/celery", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2953, in <module>
@_call_aside
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2939, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 2966, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 637, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 650, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/lib/python3.5/site-packages/pkg_resources/__init__.py", line 829, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'billiard<3.4,>=3.3.0.23' distribution was not found and is required by celery