I have multimedia/subliminal running as cronjob, and had following error in my output today:
Traceback (most recent call last):
File "/usr/local/bin/subliminal", line 5, in <module>
from pkg_resources import load_entry_point
File "/usr/local/lib/python2.7/site-packages/pkg_resources.py", line 2876, in <module>
working_set = WorkingSet._build_master()
File "/usr/local/lib/python2.7/site-packages/pkg_resources.py", line 449, in _build_master
File "/usr/local/lib/python2.7/site-packages/pkg_resources.py", line 745, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/local/lib/python2.7/site-packages/pkg_resources.py", line 639, in resolve
The night before it ran fine.
Manually installing devel/py-pbr solved it.
After some research, it seems that devel/py-pbr was installed before, but only as a build dependency of devel/py-stevedore/, so my "pkg autoremove" run yesterday removed it. I think it should be added as runtime dependency, rather than just a build dependency.
Curiosly, subliminal/stevedore seemed to need it only on one (the first after an update?) run, I just deinstalled py-pbr to test and subliminal ran fine without it. So not sure if it's a bug or I'm doing something wrong. Sorry if it's the latter.
A commit references this bug:
Date: Sat Feb 7 14:46:44 UTC 2015
New revision: 378594
- Add devel/py-pbr to run dependencies 
- Bump PORTREVISION
Submitted by: email@example.com
Fixed. Thank you for the report!