[Distutils] What is the syntax for passing conditional non-extra dependencies in setuptools?

PJ Eby pje at telecommunity.com
Thu Mar 27 19:39:46 CET 2014

On Wed, Mar 26, 2014 at 11:29 PM, Daniel Holth <dholth at gmail.com> wrote:

> How do I specify a conditional (marker-guarded) non-extra dependency
> in setuptools? The syntax for a conditional extra dependency is
> currently:
>     extras_require = {
>         "ssl:sys_platform=='win32'": "wincertstore==0.2",
>         "certs": "certifi==1.0.1",
>     },

I only implemented support via extras, and the feature wasn't officially
supported (still isn't, I don't think) because the PEP specifying the
syntax wasn't fully baked yet.  I figured that if *only* setuptools itself
used it, then if the syntax changed only setuptools would break...  but fix
itself at the same time.

The same cannot be said for any other package, so use at your own risk.  Or
better yet, don't use it.  ;-)

(At least, not until it's a documented feature w/a PEP-approved syntax.)

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