Kotlin notebook not finding sources of local project

Question

I have a simple kotlin gradle project and I'd like to use the Kotlin notebook to try out quickly my code.

The Kotlin notebook is supposed to be able to access the sources of a local project but those can't actuallty be found:

Steps to reproduce:

• Generate a Gradle project

gradle init \
  --type kotlin-application \
  --dsl kotlin \
  --package my.project \
  --project-name my-project  \
  --no-split-project  \
  --java-version 17

• Add a playground.ipynb to the project

Answer 1

One has to go to the Kotlin Notebook settings on the top of the notebook to "Select modules to use in the Notebook". There I needed to select on which of my modules the notebook depends