I talked with a few people from the Polish Haiku community. I was going to suggest the "official" Qt optional package. There are several versions of Qt for Haiku. This is annoying. I think that in the optional packages, should be as much as possible, a well-running programs and libraries. It is unfortunate that in the optional packages are things that do not work - Links and NetSurf in Alpha4 (if my memory serves me).