Story
How Our Rust-to-Zig Rewrite Is Going
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Overview
Roc's compiler team has rewritten 300,000 lines of Rust code into Zig over the past year and a half. The project has achieved feature parity with the original Rust compiler.
Summary from rtfeldman.com.
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rtfeldman.com
How Our Rust-to-Zig Rewrite Is Going
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Community reactions
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Hacker News · rtfeldman.com
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Historical count: 5 · 5 saved in sample · Historical sample
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Based on 5 sampled comments from this thread. Analyzed 2026-07-17.
- Praise: Zig's incremental builds are definitely a killer feature — they could be a game-changer for developers looking to speed up their workflows.
- Praise: Some commenters are optimistic about Rust potentially adopting Zig's features in the future, which could combine the best of both worlds.
- Praise: There's interest in building tools that merge Rust's safety with Zig's performance, highlighting a desire for innovation in the compiler landscape.
- Concern: Many skeptics doubt that Zig's safety features actually catch use-after-free errors, suggesting it might not be as robust as claimed.
- Concern: Commenters are critical about the lack of scientific evidence in choosing Zig over other languages, implying the decision may have been hasty or unfounded.
- Concern: There are concerns that simply rewriting in Zig won't automatically yield better performance, as compiler efficiency heavily relies on algorithms, not just the language used.