pyozig/PyOZ v0.3.1

PyOZ v0.3.1

on GitHub

What's New in v0.3.1

Added

• Cross-platform CI testing for example module - Tests on Linux, Windows, and macOS
  • New example-module job in CI workflow testing 3 platforms × 4 Python versions (3.10-3.13)
  • Comprehensive test coverage: basic functions, classes, magic methods, __base__ inheritance, iterator views, dict/set views, datetime types, error handling, custom exceptions, NumPy buffers, and submodules
  • Added examples/** to CI trigger paths
  • Added format checking for examples/ directory

Fixed

• macOS Python 3.13 crash during interpreter shutdown - Fixed use-after-free in submodule creation
  • createSubmodule was allocating PyModuleDef on the stack, but Python stores a reference to it
  • When the function returned, the stack memory became invalid
  • During Python's GC traversal at shutdown, accessing the freed memory caused a crash
  • Fix: Use a comptime-generated static struct to hold the PyModuleDef
• Windows support - PyOZ now works correctly on Windows
  • Replaced python3-config with sysconfig module for cross-platform Python detection
  • Fixed library naming (python313 on Windows vs python3.13 on Unix)
  • Fixed example module extension (.pyd on Windows vs .so on Unix)
  • Fixed crash when inheriting from Python built-in types (__base__)
    • On Windows, DLL data imports (like PyList_Type) require runtime address resolution
    • Comptime initialization used import thunk address instead of actual type object
    • Added runtime initBase() for Windows while preserving comptime on Linux/macOS

Changed

• Python detection now uses sysconfig module (standard library since Python 3.2) on all platforms
• python3-config is no longer required on any platform

Installation

Download the binary for your platform and add it to your PATH:

Source

Download PyOZ-0.3.1.tar.gz for the source code.

Quick Start

pyoz init mymodule
cd mymodule
pyoz build
pip install dist/*.whl