What happened to Haskell repository for Leap 15.4?

I used to get recent versions of Pandoc from the repository http://download.opensuse.org/repositories/devel:/languages:/haskell/openSUSE... However, this ceased to exist from one day to another a few months ago. What's the reason for this (and in general, where can I find announcements or discussions for such actions)? And what is a proper substitute for it? Any advice is highly appreciated. Werner