Current Status

The witx syntax shown here is supported by the witx parser in the WASI tree.

New-style commands, a toolchain feature that can be one of the building blocks:

• https://reviews.llvm.org/D81689
• https://github.com/WebAssembly/wasi-libc/pull/203
• https://github.com/rust-lang/rust/pull/82924

Interface types are in phase 1, and there is prototyping underway at a few different levels.