nixos/pkgs/pkgsets/haskell.nix

{ config, pkgs, ... }:

{
  config.machine.pkgsets.haskell.pkgwrap = [ (pkgs.haskellPackages.ghcWithPackages (pkgs: config.machine.pkgsets.haskell.pkgs)) ];
  config.machine.pkgsets.haskell.pkgs = with pkgs.haskellPackages; [
    hindent
    mtl
    random
  ];
}