flake.nix

{
  description = "A Nix-flake-based Node.js development environment";

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

  outputs =
    { self, nixpkgs }:
    let
      overlays = [
        (final: prev: rec {
          nodejs = prev.nodejs-18_x;
          yarn = (prev.yarn.override { inherit nodejs; });
        })
      ];
      supportedSystems = [
        "x86_64-linux"
        "aarch64-linux"
        "x86_64-darwin"
        "aarch64-darwin"
      ];
      forEachSupportedSystem =
        f:
        nixpkgs.lib.genAttrs supportedSystems (
          system: f { pkgs = import nixpkgs { inherit overlays system; }; }
        );
    in
    {
      devShells = forEachSupportedSystem (
        { pkgs }:
        {
          default = pkgs.mkShell {
            packages = with pkgs; [
              node2nix
              nodejs
              yarn
              gh
            ];
          };
        }
      );
    };
}