The easiest way to install boxed is using pip:

$ sudo python -m pip install boxed

This will fetch the archive and its dependencies from the internet and install it for you. You may need to run python3 in order to select the correct python version.

If you download the tarball, unpack it, and execute:

$ sudo python setup.py install

This package must be installed as the superuser since it requires priviledges to set the correct capabilities to the python_boxed interpreter.

Troubleshoot

Some Linux distributions (e.g. Ubuntu) install Python without installing pip. Please install it before. If you don’t have root privileges, download the get-pip.py script at https://bootstrap.pypa.io/get-pip.py and execute it as python get-pip.py --user.