This year again, the Budapest Haskell User Group organizes the Budapest Haskell Hackathon between the 29-30th of July. On this two day event multiple presentations will take place (including the Wigner GPU Lab's) and the participants bring different projects that groups can work on. Everyone is welcome who is interested in the Haskell language whether they are a beginner or an expert.
Further information is available on the webpage.
Registration (for organization purposes only, the data is not shared with third parties).