I'm working on a dApp that uses Haskell Servant or Purescript's Httpurple (haven't really settled on one yet though I imagine Haskell currently is my preference since it will have more capability for a back end) as backend and Purescript's Halogen as the front end. I am in WAY over my head but learning a ton. purs-nix and hix and the work shared by Lovelace Academy are going to be major parts of why this will actually work in the end.
Progress is here if anyone has any pointers. I am getting stuck on some fairly newbish issues but the flake I am building that glues the project together has some nice features. I had originally been planning to use default.nix files in the folders of each component but it looks like a flake in each directory would work better.