This is exactly what my first step was going to be. Thanks for the link! Saves a lot of time for someone to have already done it.

What do you mean it can 'generate python programs that solve the tasks'? I can't find any mention of that. I only see hand-coded solutions.

No, his re-arc code does not enable generating more tasks, it merely allows to generate more examples for the already existing training tasks. Also, it can't generate task-solving programs either, it's author merely also provided a solution program for each generator program to verify the validity of the generated examples.