In:
https://freexian-team.pages.debian.net/debusine/reference/coding-practices.html#evaluating-ui-prototypes
It says:
The script runs examples/playground/populate
It was moved/refactored in 30b9b9d4
I suspect that is not only changing the path but adapting it to point out at debusine/db/playground/scenarios.py
debusine/db/playground/scenarios.py
/cc @enrico