flake.nix

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

  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";

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

    devShells = forEachSupportedSystem ({pkgs}: {
      default = pkgs.mkShell {
        packages = with pkgs; [ nodejs nodePackages.pnpm yarn playwright uv ];
        shellHook = ''
          uv tool install specify-cli --from git+https://github.com/github/spec-kit.git
          export PATH="$HOME/.local/bin:$PATH"
        '';
      };

    });
  };
}