This document briefly describes external programs required to be installed.
Requires graphviz. Can be installed from your distribution repo:
$ sudo apt-get install graphviz
$ sudo dnf install graphviz
Requires gcc. Can be installed from your distribution repo:
$ sudo apt-get install build-essential
$ sudo dnf install gcc
Requires lizard. Can be installed from pip:
$ pip3 install --user lizard
Optional: sqlite. Can be installed from your distribution repo:
$ sudo apt-get install sqlite3
$ sudo dnf install sqlite3
Requires sqlite3.
Requires graphviz.