The .master folder uses the copy.mk script form all our courses to generate solutions and tasks. But because we are not using C files, we cannot use the cppp (C partial pre-processor) which we use for the tasks for the other courses. BUT Jinja to the rescue. I found a jinja2-cli application which consumes a YAML file and just processes a random other file. And it works! Look at the requirements.txt to set up your venv for the jinja2-cli app. That said, the pre-processed versions of the files are commited so no need to install it.