OpenAI gym installing error

I've tried to install OpenAi Gym on Windows with pip, but 2 errors raised.

First I cloned the repository and executed:

git clone

cd gym

pip install -e .

Until here all good. I can test the first environments.

But When I try the full installation,

pip install -e '.[all]'

I got the errors:

Failed building wheel for Box2D-kengz

Failed building wheel for mujoco-py

Command "c:\users\salva\anaconda3\python.exe -u -c "import setuptools, tokenize;file='C:\Users\salva\AppData\Loc al\Temp\pip-build-g8mb7_qr\atari-py\';f=getattr(tokenize, 'open', open)(file);'\r\ n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record C:\Users\salva\AppData\Local\Temp\pip-uayfrm 4q-record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\salva\A ppData\Local\Temp\pip-build-g8mb7_qr\atari-py\

It seems that I can't install the whole package.

My pip version is:

pip 9.0.1

Any thought?? Thanks!!