[scikit-image] Installing from pypi tarball without cython

[Stefan van der Walt]

On Fri, 27 Jul 2018 13:31:36 -0400, Matthew McCormick wrote:
> I created a PR to address this issue here:
> 
>   https://github.com/scikit-image/scikit-image/pull/3295

Thanks, Matt, this is useful.

That said, I think Stuart's bug report is still valid: the source
tarball is supposed to ship with precompiled Cython code, and thus
should not require Cython to be present in order to build.

Stéfan