{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils }:
    flake-utils.lib.eachDefaultSystem (system:
      let pkgs = import nixpkgs { inherit system; };
      in {
        devShell = pkgs.mkShell { packages = with pkgs; [ marp-cli ]; };

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

          src = ./docs;
          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
          '';
        };
      });
}