{
  description = "This is a test if lualatex works";

  inputs = {
    nixpkgs = {
      type = "indirect";
      id = "nixpkgs";
    };
  };

  outputs = {self, nixpkgs} :
  let

    # System types to support.
    supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];

    # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;

    # Nixpkgs instantiated for supported system types.
    nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });


  in {
    packages = forAllSystems (system:
      let
        pkgs = nixpkgsFor.${system};
        latexdeps = {inherit (pkgs.texlive) scheme-full;};
        latex = pkgs.texlive.combine latexdeps;
      in {
        default = pkgs.stdenvNoCC.mkDerivation {
          name = "output.pdf";
          buildInputs = [latex];
          src = self;
          buildPhase = ''
            lualatex src/Main.tex
          '';
          installPhase = ''
            mkdir -p $out
            cp Main.pdf $out/output.pdf
          '';
        };
      }
    );
  };
}