Makepad 2.0 Splash Scripting Language

Splash is Makepad 2.0's core runtime UI scripting language, released February 12, 2026. It replaces the old compile-time live_design! macro system with a runtime script_mod! macro that enables hot reload, streaming evaluation, and AI-first code generation.

Core Concepts

Script Structure

Every Splash script starts with a use import and is embedded in Rust via the script_mod!{} macro:

use makepad_widgets::*;

app_main!(App);

script_mod! {
    use mod.prelude.widgets.*

    // let bindings, functions, state, and UI definitions go here