wasip3 (0.4.0+wasi-0.3.0-rc-2026-01-06)

Published 2026-03-26 11:05:15 +00:00 by siennathesane

Set up this registry in the Cargo configuration file (for example ~/.cargo/config.toml):

[registry]
default = "gitea"

[registries.gitea]
index = "sparse+" # Sparse index
# index = "" # Git

[net]
git-fetch-with-cli = true

To install the package using Cargo, run the following command:

cargo add wasip3@0.4.0+wasi-0.3.0-rc-2026-01-06

For more information on the Cargo registry, see the documentation.

WASIp3 API bindings for Rust

`wasip3`

A Bytecode Alliance project

WASIp2 API Bindings for Rust

This crate contains bindings for WASIp3 APIs for the worlds:

This crate is procedurally generated from WIT files using wit-bindgen.

Usage

Depending on this crate can be done by adding it to your dependencies:

$ cargo add wasip3

Using this crate requires Rust 1.90.0. If you're using this before 2025-09-18 you'll want to use the beta channel of Rust. You'll also want to use this crate with the wasm32-wasip2 target (the Rust compiler does not currently have a wasm32-wasip3 target).

Development

The bulk of the wasip3 crate is generated by the wit-bindgen tool. The src/bindings.rs file can be regenerated with:

$ ./ci/regenerate.sh

WASI definitions are located in the wit directory of this repository. Currently they're copied from upstream repositories but are hoped to be better managed in the future.