missing gym in requirements

[rpanai]

Inside this file https://github.com/facebookresearch/nevergrad/blob/master/nevergrad/functions/rl/envs.py you are importing gym but this is not listed as requirements.

[jrapin]

Hi, This is on purpose, most users only use the optimizers so the basic installation does not include gym which is only needed in the benchmarks. To install the extra requirements you can use pip install nevergrad[bench] or pip install nevergrad[all]

[rpanai]

The problem here is that I got an error trying to build an conda-forge package for this library. Eventually I can remove the benchmarks.

[jrapin]

I'm not very familiar with conda-forge, is there no way to have extra requirements only installed when needed? Most users would only use the optimizers, which do not require much, while the testbeds include way more dependencies, including huge ones like pytorch :s I would definitely not want to include this for the basic installation

[rpanai]

@jrapin I'm going to investigate. I think it will be great to add to conda-forge. fbprophet is already there and I recently added hiplot.

[jrapin]

Cool ;) let us know how it goes