XZise added a comment.
Okay I'm running a new test https://travis-ci.org/xZise/pywikibot-core/builds/52267580 now after I tested through the versions. Version 9, which was the last version officially compatible with Python 2.6, couldn't be installed because of:
File "/tmp/pip_build_xzise/jaraco.functools/setup.py", line 13 needs_pytest = {'pytest', 'test'}.intersection(sys.argv) ^
Then the next older version was 8.9.1 which is incompatible for the same reason. I guess along with version 10 of `irc` they dropped the support in all their utility libraries and versions before 8.9.1 didn't use them. Although I was able to install 8.9 and adding a dependency in a -.-.1 version seems unlikely.
TASK DETAIL https://phabricator.wikimedia.org/T90441
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To: XZise Cc: jayvdb, Aklapper, XZise, pywikipedia-bugs