---
title: "ra-jit"
description: "Drop-in cargo replacement built on rust-analyzer and Cranelift that rebuilds only changed functions and hot-swaps edits into a running Rust program in milliseconds."
canonical: "https://vibing.inc/library/ra-jit-vg-2567"
category: "Dev Utilities & Vibe-Coding Tooling"
subcategory: "Build & DX CLI"
license: "Apache-2.0"
author: "ix (indexable-inc)"
source: "https://github.com/indexable-inc/ra-jit"
---

# ra-jit
Drop-in cargo replacement built on rust-analyzer and Cranelift that rebuilds only changed functions and hot-swaps edits into a running Rust program in milliseconds.
## Facts
- Source: https://github.com/indexable-inc/ra-jit
- Category: Dev Utilities & Vibe-Coding Tooling / Build & DX CLI
- Author: ix (indexable-inc)
- Licence: Apache-2.0
- Tags: rust, hot-reload, cargo, compiler, jit
## Why it's a gem
Live-editing Rust while the program keeps its state, with honest published benchmarks.
---
Listed in The Vibeary: https://vibing.inc/library/ra-jit-vg-2567 · JSON: https://vibing.inc/api/public/library/gems/ra-jit-vg-2567