$ sudo apt-get install libzmq3 libevent-dev python-dev tcl8.5 build-essential python-pip

$ pip install virtualenvwrapper

# Add the following to your .bashrc:
export WORKON_HOME="/opt/virtual_env/"
source "/opt/virtual_env/bin/virtualenvwrapper_bashrc"

# Now you should be able to run the mkvirtualenv command:
$ mkvirtualenv feedback
$ pip install -r requirements.txt

$ python -i workbench.py

$ python run.py

$ circusd dev.ini