Grüß Gott! The old biolib depended on Prelude.catch, which has apparently been removed in recent GHCs. This is probably not too relevant for much software anymore, but some tools still depend on biolib, so it has now been updated - look for version 0.5.3 should you need it.
Greetings from München, -k -- If I haven't seen further, it is by standing in the footprints of giants
