Preinstall gym==0.21.0 with option --no-use-pep517
#253
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New versions of pip/setuptools enforce pep 517 by default, which is not respected by gym 0.21.0 install.
So we preinstall with option
--no-use-pep517
so that the installation ofscikit-decide[all]
works.Note that it could be also nice to upgrade to gymnasium 0.26 and later but this is not yet possible because of a conflict between recent versions of
ray[rllib]
andstable-baselines3
which are each fixing a different version of gymnasium.We also add this tip in the documentation to install scikit-decide (normal process and developper mode).