hatch-simple-cython 0.1.0b1

A simplified Cython build hook plugin for Hatch

hatch-simple-cython

A minimalist Hatch plugin for building Cython extensions, optimized for uv projects.

Features

• Zero-config - Auto-discovers and compiles .pyx files
• Simple - Focused on core functionality without complex configuration
• Full Cython support - Compiler directives, include directories, and linking options
• uv-friendly - Perfect integration with uv workflow

Installation

uv add --dev hatch-simple-cython

Quick Start

Add to your pyproject.toml:

[build-system]
requires = ["hatchling", "hatch-simple-cython", "Cython>=3.0.0", "setuptools"]
build-backend = "hatchling.build"

[tool.hatch.build.targets.wheel.hooks.simple-cython]

That's it! The plugin will automatically discover and compile your .pyx files.

Configuration

Basic Example

[tool.hatch.build.targets.wheel.hooks.simple-cython]
directives = { language_level = "3", boundscheck = false }
compile_args = ["-O3"]
include_dirs = ["include"]
compile_py = false  # Only compile .pyx files by default

NumPy Support

[tool.hatch.build.targets.wheel.hooks.simple-cython]
include_numpy = true

All Options

Option	Type	Default	Description
directives	dict	{language_level: 3}	Cython compiler directives
compile_args	list[str]	["-O2"]	Compiler arguments
link_args	list[str]	[]	Linker arguments
include_dirs	list[str]	[]	Include directories
libraries	list[str]	[]	Libraries to link
library_dirs	list[str]	[]	Library search directories
define_macros	list	[]	Preprocessor macro definitions
compile_py	bool	false	Compile .py files
include_numpy	bool	false	Include NumPy headers
cythonize_kwargs	dict	{}	Additional cythonize() kwargs

Examples

See the examples/ directory for complete example projects:

• pure_python/ - Compiling .py files to binary extensions
• simple_example/ - Basic Cython usage with .pyx files
• numpy_example/ - Cython with NumPy integration

MIT License

See LICENSE file for details.