Install Ergonomica by running
pip install ergonomicaOn first invocation, Ergonomica will create the ~/.ergo directory, ~/.ergo/.ergo_profile (initialized as an empty file), as well as the ~/.ergo/packages directory. Ergonomica will then prompt you with something along the lines of
Do you want to install epm (the Ergonomica Package Manager)? (Y/n):
The Ergonomica Package Manager (EPM) is a tool to download standard Ergonomica packages to add functionality to your shell. It is highly recommended to install it.
For some reason, FreeBSD doesn't include the standard python sqlite3 library by default. You'll have to install it:
pkg install databases/py-sqlite3