https://travis-ci.org/wikimedia/pywikibot-core/jobs/268693598#L618
Collecting ruamel.yaml (from maya->Flask-Common->httpbin->pytest-httpbin->-r dev-requirements.txt (line 10)) Downloading ruamel.yaml-0.15.32.tar.gz (259kB) Complete output from command python setup.py egg_info: minimum python version(s): [(2, 7), (3, 3)] ---------------------------------------- Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-i4sg5u/ruamel.yaml/
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Invalid | None | T72987 Python 2.6 issues (tracking) | |||
| Resolved | Dalba | T174283 Python 2.6 builds fail during ruamel.yaml installation |
The origin of that error message is https://bitbucket.org/ruamel/yaml/commits/2eba8ded942a6716db86eb8530297cdfd57d8dfa#Lsetup.pyT429
According to issue #117 in upstream bug tracker they have dropped support for py2.6; therefore we can't expect any fix here.
https://bitbucket.org/ruamel/yaml/src/default/CHANGES?fileviewer=file-view-default#CHANGES-361
The support for 2.6 has been dropped in 0.12.0.
Change 374073 had a related patch set uploaded (by Dalba; owner: Dalba):
[pywikibot/core@master] dev-requirements.txt: Require ruamel.yaml<0.12 for python_version < '2.7'
Change 374073 merged by jenkins-bot:
[pywikibot/core@master] dev-requirements.txt: Require ruamel.yaml<0.12 for python_version < '2.7'
OK, the previous patch resolved the setup issue. One of the 2.6 builds passed the tests successfully.
But another test failed with this error:
warnings.simplefilter('ignore', ruamel.yaml.error.UnsafeLoaderWarning)
AttributeError: 'module' object has no attribute 'UnsafeLoaderWarning'UnsafeLoaderWarning has been added in this commit which means after 2016-11-20 or in other words after v0.13.0.
Now maya has required that class since Dec 16, 2016 which is v0.0.0 !
The error cannot be related to recent changes in maya.
It should have been caused by a change in another parent package. Probably a change in httpbin package (which requires Flask-Common, which requires maya, which requires ruamel.yaml).
This is probably it: https://github.com/kennethreitz/httpbin/commit/a39de83be1b7330f6a99981bf54152c525847299
it's been committed on May 11. The last stable version prior to that date is 0.5.0.
Patch is coming...
Change 374078 had a related patch set uploaded (by Dalba; owner: Dalba):
[pywikibot/core@master] requirements.txt: Require httpbin<0.6.0 for python_version < '2.7'
Change 374078 merged by jenkins-bot:
[pywikibot/core@master] requirements.txt: Require httpbin<0.6.0 for python_version < '2.7'