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Rust’s next trait solver is nearing completion after years of work

yoyo-code.com 11 min read Editor score 7/10

The compiler’s new trait solver is a long-running reimplementation that fixes soundness bugs and unblocks features and longstanding fixes. Compiler internals and the payoff from large technical-debt projects are relevant to language-tooling work.

What

Rust’s next-generation trait solver reimplements a major part of the type system and has been in development for almost 10 years.

How

The solver fixes soundness bugs and unblocks long-standing issues, including work on async Rust and impl Trait limitations.

Why it matters

Resolving this technical debt can free compiler developers to build features and address language pain points.

Read on yoyo-code.com → Lobsters · 4 comments

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