Compatibility of meta-world with the current version of gym

[perezjln]

Hello!

Meta-world doesn't seem to be compatible with the current OpenAi Gym version (gym-0.15.4).
It seems to be necessary to have an environment with gym-0.12.1.
For info, using the current version of gym crashes meta-world :(

At installation of openAI Gym:
metaworld 0.0.0 has requirement gym==0.12.1, but you'll have gym 0.15.4 which is incompatible.

At execution of meta-world
from metaworld.benchmarks import ML1 File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\metaworld\benchmarks\__init__.py", line 1, in <module> from metaworld.benchmarks.ml1 import ML1 File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\metaworld\benchmarks\ml1.py", line 3, in <module> from metaworld.envs.mujoco.multitask_env import MultiClassMultiTaskEnv File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\metaworld\envs\mujoco\__init__.py", line 437, in <module> register_custom_envs() File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\metaworld\envs\mujoco\__init__.py", line 31, in register_custom_envs 'norm_order': 2, File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\gym\envs\registration.py", line 139, in register return registry.register(id, **kwargs) File "C:\Users\jperez\Continuum\miniconda3\lib\site-packages\gym\envs\registration.py", line 133, in register self.env_specs[id] = EnvSpec(id, **kwargs) TypeError: __init__() got an unexpected keyword argument 'tags'

Thanks!