{ nixpkgs ? import ./nix/nixpkgs.nix
, compiler ? "default"
}:
let
  inherit (nixpkgs) pkgs;
  all-hies = import (fetchTarball "https://github.com/infinisil/all-hies/tarball/master") {};
in
pkgs.mkShell {
  buildInputs = with pkgs.haskellPackages; [ ghc ghcid ]; environment.systemPackages = [
    # Install stable HIE for GHC 8.6.4, 8.6.3 and 8.4.3
    (all-hies.selection { selector = p: { inherit (p) ghc864; }; })
  ];
}