flake.nix

{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
    purescript-overlay = {
      url = "github:thomashoneyman/purescript-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, ... }@inputs:
    let
      supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
      nixpkgsFor = forAllSystems (system: import nixpkgs {
        inherit system;
        overlays = builtins.attrValues self.overlays;
      });
    in {
      overlays = { purescript = inputs.purescript-overlay.overlays.default; };
      devShells = forAllSystems (system:
        let pkgs = nixpkgsFor.${system}; in {
          default = pkgs.mkShell {
            buildInputs = with pkgs; [
              esbuild
              nodejs
              purs
              purs-backend-es
              spago-unstable
              watchexec
            ];
          };
        }
      );
  };
}