On Wed, Jun 10, 2015 at 1:25 PM, Jason R. Coombs <jaraco@jaraco.com> wrote:

I’m pleased to announce a fix for improved Cython support per Setuptools #288 (https://bitbucket.org/pypa/setuptools/issue/288). I’ve published a beta release 18.0b1 in the Setuptools project downloads (https://bitbucket.org/pypa/setuptools/downloads/setuptools-18.0b1.zip) for pre-release testing. Release notes are here (https://bitbucket.org/pypa/setuptools/src/4249669040239bff20196b17ccd4d73870...).

Please, if you use any projects with Cython modules, give this install a trial run and report any issues in the Setuptools bug tracker. I hope to release 18.0 in the next few weeks if there aren’t any emergent blockers.

Thanks for this, I'll try it out when I get a chance. Although I don't think I've run into this issue often, as I don't usually put Cython in setup_requires, as I prefer to package sources generated by Cython in the source dist (so users installing from the source dist don't need Cython themselves, and I also get more control over the Cython version used). That said, I've wanted to work out a schema for adding Cython to setup_requires only for source checkouts (but remove it when making a source dist), just as a development convenience. I guess I've just never tried it though...or maybe did and realized it was buggy and forgot about it. Good to know that it *should* work now. Erik