migration

Migrating from PyPy to Pyvorin

Keep CPython compatibility while gaining speed.

Published May 30, 2026

Motivation

PyPy lacks C extension compatibility. Pyvorin runs on CPython with compiled hot paths.

Step 1: Profile on PyPy

Identify hot functions that JIT well.

Step 2: Run on CPython + Pyvorin

pyvorin run script.py

Step 3: Compare Performance

Benchmark equivalent workloads on PyPy vs CPython+Pyvorin.

Step 4: Migrate C Extensions

C extensions that failed on PyPy now work with Pyvorin.