A $400 experiment rewrote 65,000 lines of go as rust in a weekend. the september 2 report has one…
a $400 experiment rewrote 65,000 lines of go as rust in a weekend. the september 2 report has one developer spending a few hundred dollars and a weekend of oversight instead of a year of engineering salaries.
the cost of a rewrite just stopped being a project.
Context
A first-person blog post dated 1 September 2026, I used Fable to rewrite 65kLoC to Rust. It cost 400 dollars, describes a three-step method of extracting a data representation, operating on it and regenerating code, orchestrating subagents so the main model does not read or write code. The project is a terminal editor named rune. The author contrasts it with a Bun rewrite of 535,496 lines for 165,000 dollars, as quoted in the post.
Single self-reported anecdote; cost and result quality are not independently verified. Go as the source language is not supported in the text read, and the post does not say a weekend or give a duration, tests or an outcome comparison. The post is dated 1 September and the note says 2 September. A few hundred dollars rounds the 400, and instead of a year of engineering salaries is the note's comparison and not the post's. The cost of a rewrite just stopped being a project is the author's take.
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Sources
Provenance
The note above is reproduced unedited from the original post, first published on Threads on 20 September 2026 at 23:02 IST. Sources are the papers and datasets the note draws on.
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