Rust Blog: wasm32-wasip2 Target Upgraded to Tier 2 Support

Discover the recent upgrade of the wasm32-wasip2 target to tier 2 support in Rust, enabling direct compilation to WASI 0.2 interfaces.

Published 2 weeks ago by @rustlang on blog.rust-lang.org

Abstract

Rust has announced a significant upgrade to the wasm32-wasip2 target, now a tier 2 support. This means the target is guaranteed to build and can be installed via Rustup. With this enhancement, developers can now directly target WASI 0.2 for platform-specific code, allowing for the creation of WASI-compatible network code. While the support is stable, some limitations in the stdlib persist, but efforts are underway to expand support throughout this year and beyond.

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Discussion

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Relevance

This article is important for you as it highlights the recent advancement of the wasm32-wasip2 target to tier 2 support in Rust. It provides opportunities for directly targeting WASI 0.2 for your projects, enabling the development of WASI-compatible network code. However, it also points out the current limitations in the Rust stdlib, which you should consider when leveraging this feature.

Applicability

You should consider upgrading to Rust 1.81.0 to access the wasm32-wasip2 target, allowing you to directly compile to the WASI 0.2 interfaces. If you are working on projects that require platform-specific code or WASI-compatible network code, targeting WASI 0.2 could be highly beneficial.

Risks

One risk to be aware of is the incomplete support in Rust stdlib for WASI 0.2 APIs. This may limit the functionalities you can leverage when targeting the wasm32-wasip2 tier 2 support. Additionally, while the support is stable, there may be unforeseen compatibility issues that could arise as you transition to this upgraded target.

Conclusion

The upgrade of the wasm32-wasip2 target to tier 2 support signifies a significant step towards enabling developers to build efficient software using WASI 0.2 interfaces. In the long term, as the Rust stdlib extends support for WASI 0.2 APIs, you can expect more seamless integration and enhanced capabilities for developing platform-specific functionalities within the Rust ecosystem.

References

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The wasm32-wasip2 Target Has Reached Tier 2 Support | Rust Blog
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