{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-parts = {
      url = "github:hercules-ci/flake-parts";
      inputs.nixpkgs-lib.follows = "nixpkgs";
    };
    systems.url = "github:nix-systems/default";
  };

  outputs = {flake-parts, ...} @ inputs:
    flake-parts.lib.mkFlake {inherit inputs;} {
      systems = import inputs.systems;

      perSystem = {
        pkgs,
        system,
        ...
      }: rec {
        devShells.default = pkgs.mkShell {
          packages = packages.slides.nativeBuildInputs;
        };

        packages.slides = pkgs.stdenvNoCC.mkDerivation rec {
          name = "slides";

          src = ./.; # because slides/assets is a symlink

          npmRoot = "slides";
          npmDeps = pkgs.fetchNpmDeps {
            src = "${src}/slides";
            hash = "sha256-GJ10or/LERFOsBG6CqnRFXnXSEZB7+0C5CV6t8X/Um8=";
          };

          nativeBuildInputs = [
            pkgs.npmHooks.npmConfigHook
            pkgs.nodejs
          ];

          buildPhase = ''
            cd slides
            npm run build
          '';

          installPhase = ''
            mv dist $out
          '';
        };
      };
    };
}