Imre

An experimental ahead-of-time compiler for typed Python, written in Rust.

[!WARNING] This README includes human edits; all code changes, PR summaries, and additional documentation were authored entirely by GPT-6 Astra in Codex.

Imre implements only a small part of Python and its standard library, with no guarantee of future development or maintenance. Use at your own risk.

Benchmarks

Each CLI runs on one AMD EPYC Milan vCPU with warm filesystem caches. Imre and CPython run the same Python. The catalog includes uv’s original implementation as a second CPython reference. Road routing includes reading the graph and finding all four distances. Workloads, raw samples and reproduction steps

The Flask benchmark issues health checks, escaped HTML greetings and JSON sums over loopback. Each bar is the median of 70 rounds at eight concurrent clients. Frozen Flask on Imre 0.1.5 compiles its routes and Jinja template ahead of time. Stock Flask on CPython uses Werkzeug. Rust/Hyper…