There's a joke that every Rust project starts with someone saying "we should rewrite this in Rust" and ends four weekends later with a half-finished repo and a lot of new opinions about lifetimes.
We had 72 hours. So we skipped the opinions.
This is the story of rs-parsimonious — a complete Rust port of erikrose/parsimonious, a pure-Python PEG packrat parser — built for Port Mortem 2026, a hackathon whose entire premise is that writing a port is easy and proving it works is the interesting part.
Here's where we landed:
Differential fuzz
