Cool that you found this. I’m a student at this university and most alumni I’ve spoken say it is only used for research and a masters degree course course [1]. What’s interesting is that the bachelor course on functional programming gets thought in Haskell.
The undergraduate course was taught in Clean until a few years ago. Learning functional programming in Clean is a nightmare because it is impossible to find any helpful resources online about the language and the tooling is useless compared to Haskell's.