9th March 2026
Research
Luau WebAssembly: Browser Playground + Python wasmtime
— Luau WebAssembly explores compiling the Luau scripting language (used by Roblox) to WebAssembly for interactive browser environments and Python integration via wasmtime. By leveraging Emscripten, the project creates a streamlined WASM module that runs in the browser (with a playground and Pyodide integration) and server-side Python. Key technical adaptations include custom output capture, flexible WASM imports for wasmtime, and Python wrappers that handle C++ exception lifecycles.
Luau is an MIT licensed "small, fast, and embeddable programming language based on Lua with a gradual type system", created by Roblox.
As part of my ongoing obsession with sandboxed runtimes I decided to see if I could get it working via WebAssembly in both Python and Pyodide.
Recent articles
- Some thoughts on the Navier–Stokes Millennium Prize Problem - 8th September 2026
- The Pelican comparison grid for Astra is pretty interesting - 4th September 2026
- OpenAI's rogue agents were caught communicating via public wikis - 4th September 2026