Crate features / wasip3
Feature flags · wasip3 0.9.0+wasi-0.3.0 · from crates.io 2026-10-24
wasip3 features: what each one does, and the line to copy
Short answerwasip3 0.9.0+wasi-0.3.0 has 6 features. By default it turns on std, bitflags; add default-features = false to start from nothing. It needs Rust 1.87.0 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
async-spawn | wit-bindgen/async-spawn | |
bitflags | yes | wit-bindgen/bitflags |
http-compat | dep:bytes, dep:http-body, dep:http, dep:thiserror, async-spawn | |
rustc-dep-of-std | core, alloc, wit-bindgen/rustc-dep-of-std | |
std | yes | nothing else (a switch the code checks) |
wit-bindgen-macros | wit-bindgen/macros |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version wasip3 declares (rust-version), and the release that changed it:
- 0.1.0+wasi-0.3.0-rc-2025-08-15 (2025-09-09): Rust 1.82.0
- 0.4.0+wasi-0.3.0-rc-2026-01-06 (2026-01-15): Rust 1.87.0
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p wasip3 --precise <version>, or use resolver 3, which picks compatible versions for you.
More on wasip3
Real downloads, dependents and alternatives: wasip3 crate data (500K real downloads a day, 40 dependents).
docs.rs feature list · crates.io · license Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT · edition 2021
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