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

      perSystem = {
        pkgs,
        system,
        ...
      }: {
        devShells.default =
          pkgs.mkShell {packages = with pkgs; [marp-cli];};

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

          src = ./.;
          dontUnpack = true;
          buildInputs = with pkgs; [marp-cli];

          buildPhase = ''
            marp --html $src/slides.md --allow-local-files -o slides.html
          '';

          installPhase = ''
            mkdir -p $out
            cp -r $src/figs $out/figs
            cp slides.html $out/index.html
          '';
        };
      };
    };
}