May 26, 2026
Less code, more chaos
From Rust to Ruby
He swapped a huge app for a tiny one — and the comments instantly started fighting
TLDR: A developer used an AI tool to shrink part of a software project from nearly 15,000 lines to about 3,300 by switching from Rust to Ruby on Rails. Commenters instantly turned it into a drama fest, arguing over whether this was a clever shortcut, empty hype, or a brag about code that might not even work.
A developer proudly announced they used an artificial intelligence tool to turn a 14,943-line app written in Rust into a 3,322-line version in Ruby on Rails — a jaw-dropping size drop that should have been a victory lap. Instead, the real show started in the comments, where readers split into camps almost immediately. One side was dazzled by the promise: less code, faster building, easier testing, and the kind of "developer happiness" Ruby on Rails fans love to brag about. As one commenter basically put it, no popular coding setup pampers creators quite like Rails.
But the skeptics were not having it. The loudest criticism? The author admitted they hadn’t even tried running the converted app yet. That led to instant mockery, with one reader summing up the entire post as: it might not work, but hey, it’s shorter! Ouch. Another went even harder, saying the article lost all appeal the moment the writer revealed the conversion was done by a large language model, comparing it to making an underling do the work and then asking everyone to clap.
And because internet comment sections can never resist a meme, one reader joked that tech trends have now gone from "everything to Go" to "Go to Rust" to the shocking new craze: "Rust to Ruby". Even a nitpick about the command used to count lines turned into comedy. In other words, this wasn’t just a story about switching programming languages — it became a full-on referendum on hype, shortcuts, and whether shorter code is actually worth celebrating if nobody knows whether it runs.
Key Points
- •The article examines rewriting part of a personal software project from Rust to Ruby on Rails.
- •The Rust web application component discussed contains 14,943 lines of code and uses Tera, Axum, and heavy Playwright-based end-to-end testing.
- •The author compares Rust/Axum/Diesel, Rails, and Rails + Sorbet across development, safety, performance, and testing criteria, with the Rails options scoring higher overall.
- •A local Qwen3.6 language model running on a 4090 Ti GPU was used to perform a one-shot Rust-to-Ruby conversion in about 30 minutes.
- •At the time of writing, the converted Ruby project had not been run yet, but the author reports the generated Ruby code measured 3,322 lines versus 14,943 lines of Rust.