Spurious dependency on ordereddict

[pitrou]

The setup.py now inconditionally specifies a dependency on ordereddict, while it's only necessary for Python 2.6 and earlier.

[johanbrandhorst]

This is particularly bad for users of conda and python2.7, because conda refuses to install ordereddict with a python2.7 environment. A workaround is to manually install it using pip:

pip install ordereddict

[rbtcollins]

I'm flat out travelling next week, but if someone wants to put up a PR changing this to a marker driven conditional dependency that would be great. Be sure to either set a setup_requires minimum new enough to support that, or use the hack of putting markers in extras_require.

[gnurser]

A solution here would be great.

[johanbrandhorst]

I've submitted a pull request, #19. Does that cover everything?

[rbtcollins]

Thanks @johanbrandhorst but no - procedural code like that is incompatible with wheels - need to use PEP 508 markers instead. There's a bit of a hack to get older setuptools to handle them which I've used - see the commit that closed this for an example.

I've released 1.0.1 to get the fix out there.

[johanbrandhorst]

Great job @rbtcollins 😄