A GitHub co-founder had agents rewrite Git in Rust — then relicensed it from GPL to MIT (blog.gitbutler.com)
Grit is 360,000+ lines built across multiple agent setups, burning ~45B tokens, passing 99.3% of Git's tests — though the author admits nobody has used it for anything real.
The flashpoint: Git is GPL, but Chacon released Grit under MIT, arguing the LLM-generated code is a new work. A GitHub co-founder, of all people, relicensing a copyleft project.
Others reject the premise outright: Git has never failed on a memory overflow, so why burn $10k to rewrite it?
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