horizon.dhall

let H =
      https://gitlab.horizon-haskell.net/dhall/horizon-spec/-/raw/0.10.0/horizon-spec/package.dhall

let packages =
      { 
         implicit = H.callHackage "implicit" "0.4.0.0"
      }

in  H.HorizonExport.MakeOverlay
      { overlayFile = "overlay.nix"
      , packagesDir = "pkgs/"
      , overlay = { compiler = "ghc-9.4.4", packages = toMap packages }
      }