GoKawiilI used Fable to rewrite 65kLoC to Rust. It cost $400.
September 1, 2026 · 3 min
I kept joking that I would have learned Rust a long time ago, but C++ money is not enough for a decent fursuit. Moreover, I'm bald, so I cannot simply dye my hair blue.
But then two things happened at once.
First, I tried the /teach skill by Matt Pocock 1 to learn Rust, and it clicked: "Teach a C++ programmer idiomatic Rust, skip syntax and helloworld, only focus on main differences." This skill is like a personal trainer — overcoming the pleasant challenge keeps me engaged, and at the same time, the material never gets overwhelming. I recommend trying it.
Around the same time, I came across "Rewriting Bun in Rust" 2 and got curious about the method:
Each dynamic workflow was a loop like this - a workflow for: Generate a porting guide mapping Zig patterns & types to Rust patterns & types
Mechanically port every .zig file to a .rs file, matching the PORTING.md and LIFETIMES.tsv
file to a file, matching the PORTING.md and LIFETIMES.tsv Fix every crate's compiler errors
Get subcommands like bun test or bun build to work
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