{
  description = "Advent of Code 2025";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    devenv.url = "github:cachix/devenv";
  };

  outputs =
    {
      self,
      nixpkgs,
      devenv,
      ...
    }@inputs:
    let
      system = "x86_64-linux";
      pkgs = nixpkgs.legacyPackages.${system};
      lib = pkgs.lib;
    in
    {
      devShells.${system}.default = devenv.lib.mkShell {
        inherit inputs pkgs;
        modules = [
          (
            { pkgs, config, ... }:
            {
              # languages.enable = true;
              packages = with pkgs; [
                duckdb
              ];

              enterShell = ''
                echo "Thanks Topaz!"
              '';
            }
          )
        ];
      };
    };
}