To avoid clashes with packages installed on your system, FlexGet can be installed in a Python virtualenv. A virtualenv is similar to a chroot, but specific to Python packages. Creating a virtualenv is a simple process. The virtualenv will contain its own Python interpreter and its own versions of downloaded dependencies, separate from the system's packages.

Creating a virtualenv is a standard procedure in a Python web application deployment.

Let's create a folder in which to create the virtualenv:

mkdir ~/virtualenv # or any name you prefer
cd ~/virtualenv

Now, create the virtualenv itself and make it relocatable. For some reason, we have to create a regular virtualenv before making it relocatable: