shell.nix

let
  pkgs = import (builtins.fetchTarball {
    url = "https://github.com/NixOS/nixpkgs/archive/21.11.tar.gz";
  }) {};

  # To update to a newer version of easy-purescript-nix, run:
  # nix-prefetch-git https://github.com/justinwoo/easy-purescript-nix
  #
  # Then, copy the resulting rev and sha256 here.
  pursPkgs = import (pkgs.fetchFromGitHub {
    owner = "justinwoo";
    repo = "easy-purescript-nix";
    rev = "0ad5775c1e80cdd952527db2da969982e39ff592";
    sha256 = "0x53ads5v8zqsk4r1mfpzf5913byifdpv5shnvxpgw634ifyj1kg";
  }) {inherit pkgs;};
in
  pkgs.stdenv.mkDerivation {
    name = "halogen-formless";
    buildInputs = with pursPkgs; [
      purs
      spago
      psa
      purs-tidy
      purescript-language-server
      pulp

      pkgs.nodejs-16_x
      pkgs.nodePackages.bower
      pkgs.esbuild
    ];
  }