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Zig creator calls Bun’s Claude Rust rewrite ‘unreviewed slop’ (www.theregister.com)
submitted 3 days ago by HaraldvonBlauzahn@feddit.org to c/programming@programming.dev
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*The Rustification of Bun#

Rewriting 500,000 lines of Zig into another language would be a gargantuan undertaking if done by hand. “A rewrite in another language would take a small team of engineers a full year. It would mean freezing bugfixes, security fixes or feature development for that time,” Sumner wrote.

Instead, Sumner went with Claude. He spun up about 50 dynamic Claude Code workflows, reaching a peak of about 1,300 lines of code per minute and generating over a million lines of Rust code. The job took 11 days and cost about $165,000 at API pricing. Claude Fable did most of the heavy lifting.

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[-] vext01@feddit.uk 76 points 3 days ago

There's no way a million lines of code were reviewed in 11 days. Not by a human at least.

[-] alphabethunter@lemmy.world 8 points 2 days ago

No need, you just ask the AI to "make no mistakes", then you spawn a second AI to review the first AI's output, and then you ask ~~a turd~~third AI to review the output of the second AI. Easy peazy. No need for pesky engineers and their stupid human inefficiency. /s

Non-ironically though, I think that's exactly what they did. I have watched Prime's video about this, and, although I was second-screening his video, I believe he mentioned that they used this "technique".

[-] BB_C@programming.dev 1 points 2 days ago

They didn't use that technique. Some vibers do ask Codex to review Claude and vice versa. But since this is Anthropic-owned, they did use "parallel agents", but they were all Claude.

[-] Baizey@feddit.dk 49 points 3 days ago

It took the llm 11 days to generate the code

It doesn't seem to say anywhere anyone reviewed it in any time

[-] BiteSizedZeitGeist@lemmy.world 5 points 2 days ago

They code review in prod, like REAL PROGRAMMERS HOO RAH

[-] justastranger@sh.itjust.works 1 points 2 days ago

11 days and $165,000

[-] vext01@feddit.uk 2 points 2 days ago

Exactly

[-] locuester@lemmy.zip 60 points 3 days ago

Ew. Reviewing code is so 2024

this post was submitted on 15 Jul 2026
211 points (97.7% liked)

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