{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    sydpkgs.url = "git+https://git.deertopia.net/msyds/sydpkgs?ref=lad";
  };

  outputs = inputs:
    let
      system = "x86_64-linux";
      pkgs = import inputs.nixpkgs {
        inherit system;
      };
    in {
      devShells.${system}.default = pkgs.mkShell {
        packages = [
          (pkgs.lua5_1.withPackages (ps: with ps; [
            lpeg
          ]))
        ];
      };
    };
}