{
  description = "solidhaus dev shell";

  inputs = {
    nixpkgs.url     = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    sd-card.url     = "git+ssh://git@git.toph.so/toph/sd-card";
  };

  outputs = { self, nixpkgs, flake-utils, sd-card }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = nixpkgs.legacyPackages.${system};
      in
      {
        packages = {
          # nix run .#dev — start SvelteKit dev server with annotation proxy
          dev = sd-card.lib.${system}.mkDevApp {
            inherit pkgs;
            devCmd  = "npm run dev";
            devPort = 5173;  # Vite default port
          };
        };

        devShells.default = pkgs.mkShell {
          packages = sd-card.packages.${system}.tools  # tea, jq, playwright, nodejs
            ++ (with pkgs; [
              nodejs
              nodePackages.npm
            ]);
        };
      }
    );
}