Creating a Conda recipe

I propose we get a conda build recipe up for vtki because of the headaches that Windows installations bring:

I’ve been running into trouble making vtki a dependency of my project PVGeo. When I run the Windows CI testing (AppVeyor) for the environment:

Environment: PYTHON_VERSION=3.6, CONDA=C:\Miniconda36; Platform: x86

The setup.py script for vtki tries to add VTK to the dependencies but it is unavailable for that build from pip, only from conda.

Collecting vtk (from vtki>=0.13.0->-r requirements.txt (line 9))
Could not find a version that satisfies the requirement vtk (from vtki>=0.13.0->-r requirements.txt (line 9)) (from versions: )
No matching distribution found for vtk (from vtki>=0.13.0->-r requirements.txt (line 9))

Perhaps we should change the setup.py script to always warn on windows? Or better yet, do you (@akaszynski) know how to setup conda build recipes?

I haven’t been able to figure this out for myself but I beginning to see that conda recipes will be a necessity for projects depending on VTK.

[akaszynski]

The maintainers of vtk put out wheels for most Python/OS combinations, but they’re missing wheels for Windows 32 bit and Python 2.7 for Win64, which is why it can’t be installed using pip. They do, however, maintain conda recipes at vtk-anaconda. I’m going to add a note in the setup file about this and inform the user that if they’re using Windows, they might try using conda.

[banesullivan]

See #127