Arch Linux

Description:

Because Radicale expects exactly version 2.6.1, but the repo version of python-dateutil is 2.7.2, the Radicale daemon fails to start at all.

Additional info:
* Radicale version: 2.1.9-1
* Relevant Python backtrace:

Apr 25 10:04:51 banana systemd[1]: Started radicale - A simple CalDAV (calendar) and CardDAV (contact) server.
Apr 25 10:04:58 banana radicale[3721]: Traceback (most recent call last):
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 574, in _build_master
Apr 25 10:04:58 banana radicale[3721]: ws.require(__requires__)
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 892, in require
Apr 25 10:04:58 banana radicale[3721]: needed = self.resolve(parse_requirements(requirements))
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 783, in resolve
Apr 25 10:04:58 banana radicale[3721]: raise VersionConflict(dist, req).with_context(dependent_req)
Apr 25 10:04:58 banana radicale[3721]: pkg_resources.ContextualVersionConflict: (python-dateutil 2.7.2 (/usr/lib/python3.6/site-packages), Requirement.parse('python-dateutil==2.6.1'), {'Radicale'})
Apr 25 10:04:58 banana radicale[3721]: During handling of the above exception, another exception occurred:
Apr 25 10:04:58 banana radicale[3721]: Traceback (most recent call last):
Apr 25 10:04:58 banana radicale[3721]: File "/usr/bin/radicale", line 6, in <module>
Apr 25 10:04:58 banana radicale[3721]: from pkg_resources import load_entry_point
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3088, in <module>
Apr 25 10:04:58 banana radicale[3721]: @_call_aside
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3072, in _call_aside
Apr 25 10:04:58 banana radicale[3721]: f(*args, **kwargs)
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 3101, in _initialize_master_working_set
Apr 25 10:04:58 banana radicale[3721]: working_set = WorkingSet._build_master()
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 576, in _build_master
Apr 25 10:04:58 banana radicale[3721]: return cls._build_from_requirements(__requires__)
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 589, in _build_from_requirements
Apr 25 10:04:58 banana radicale[3721]: dists = ws.resolve(reqs, Environment())
Apr 25 10:04:58 banana radicale[3721]: File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 778, in resolve
Apr 25 10:04:58 banana radicale[3721]: raise DistributionNotFound(req, requirers)
Apr 25 10:04:58 banana radicale[3721]: pkg_resources.DistributionNotFound: The 'python-dateutil==2.6.1' distribution was not found and is required by Radicale
Apr 25 10:04:58 banana systemd[1]: radicale.service: Main process exited, code=exited, status=1/FAILURE
Apr 25 10:04:58 banana systemd[1]: radicale.service: Failed with result 'exit-code'.

Steps to reproduce:

- Install Radicale
- Try running the server process, either via systemd or manually
- Watch the backtrace spew