fn main() {
    #[cfg(all(feature = "nalgebra", feature = "io"))]
    {
        use rhai::{packages::Package, Engine};
        use rhai_sci::SciPackage;

        // Create a new Rhai engine
        let mut engine = Engine::new();

        // Add the rhai-sci package to the new engine
        engine.register_global_module(SciPackage::new().as_shared_module());

        // Now run your code
        let fitting_results = engine
            .run_file("examples/download_and_regress.rhai".into())
            .unwrap();
        println!("{:?}", fitting_results);
    }
}