{ nixpkgs ? import <nixpkgs> {} }: 

let
  purescriptOverlaySrc = nixpkgs.fetchgit {
    url = "https://github.com/thomashoneyman/purescript-overlay.git";
    rev = "1a6676b94f064113980b142454e3eefeecce5dcc";
    sha256 = "sha256-jTGJhKuv/KPsMOnfIUSqoTckf4jo3e+9e0XY2cvXbD4=";
  };
  purescriptOverlay = import "${purescriptOverlaySrc}/overlay.nix";
  pkgs = import <nixpkgs> {
    overlays = [ purescriptOverlay ];
  };
in

pkgs.mkShell {
  buildInputs = with pkgs; [
    purescript
    spago
    purs-tidy
    purs-backend-es
    purescript-language-server
    nixpkgs.pkgs.esbuild
  ];
}