Common error fixes

There is a good chance that you will encounter any of the following errors while installing gym. If you get these errors, just run the following commands and try reinstalling:

• Failed building wheel for pachi-py or Failed building wheel for pachi-py atari-py:

sudo apt-get update
sudo apt-get install xvfb libav-tools xorg-dev libsdl2-dev swig cmake

• Failed building wheel for mujoco-py:

git clone https://github.com/openai/mujoco-py.git
cd mujoco-py
sudo apt-get update
sudo apt-get install libgl1-mesa-dev libgl1-mesa-glx libosmesa6-dev python3-pip python3-numpy python3-scipy
pip3 install -r requirements.txt
sudo python3 setup.py install

• Error: command 'gcc' failed with exit status 1:

sudo apt-get update
sudo apt-get install python-dev 
sudo apt-get install libevent-dev

Similarly, we can install OpenAI Universe by fetching the universe repository and installing the universe as a package:

cd ~
git clone https://github.com/openai/universe.git
cd universe
pip install -e .

The installation is shown in the following screenshot:

As already said, Open AI Universe needs Docker, as the majority of Universe environments run inside a Docker container.

So let's build a Docker image and name it universe:

docker build -t universe .

Once the Docker image is built, we run the following command, which starts a container from the Docker image:

docker run --privileged --rm -it -p 12345:12345 -p 5900:5900 -e DOCKER_NET_HOST=172.17.0.1 universe /bin/bash