flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url  = "github:numtide/flake-utils";
    purs-overlay = {
      url = "github:thomashoneyman/purescript-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, flake-utils, purs-overlay }:
    let
      systems = [ "x86_64-linux" "x86_64-darwin" "aarch64-darwin" ];
    in
    flake-utils.lib.eachSystem systems (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ purs-overlay.overlays.default ];
        };
      in
      {
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            nodejs
            purs
            spago-unstable
            purs-tidy-bin.purs-tidy-0_10_0
            purs-backend-es
          ];
        };
      }
    );
}