clipspyx 0.4.0

CLIPS Python bindings via CFFI

clipspyx

CLIPS Python bindings via CFFI. Fork of clipspy.

Building

clipspyx compiles CLIPS source directly into the CFFI extension. No separate libclips build step.

Prerequisites

• Python 3.10+
• C compiler (gcc/clang on Linux/macOS, MSVC on Windows)
• CLIPS source (auto-checked out from orphan branch, or provide your own)

Install for development

# Install with 64x backend (CLIPS 6.4x)
uv sync --extra 64x

# Install with 70x backend (CLIPS 7.0x)
uv sync --extra 70x

Switching backends

The 64x and 70x backends conflict with each other. Always use uv sync to switch:

# Switch to 64x
uv sync --extra 64x

# Switch to 70x
uv sync --extra 70x

Important: uv run --extra 64x does not remove a previously installed 70x backend (and vice versa). Only uv sync --extra <variant> correctly installs the requested backend and removes the conflicting one.

CLIPS source override

# Use an arbitrary CLIPS source directory
CLIPS_SOURCE_DIR=/path/to/clips/core uv sync --extra 64x

Build distributable wheels

uv run scripts/build-backend.py 64x   # builds clipspyx-ffi + clipspyx-ffi-64x wheels
uv run scripts/build-backend.py 70x   # builds clipspyx-ffi + clipspyx-ffi-70x wheels

CLIPS Source Management

CLIPS source is stored in git orphan branches (clips-64x, clips-70x). Sync from SVN:

uv run scripts/sync-svn.py 64x   # syncs core/ -> orphan branch clips-64x
uv run scripts/sync-svn.py 70x   # syncs core/ -> orphan branch clips-70x

Usage

import clipspyx

env = clipspyx.Environment()
env.build('(defrule hello (initial-fact) => (println "Hello CLIPS!"))')
env.reset()
env.run()

Testing

uv run pytest tests/ -v

License

BSD-3-Clause. See LICENSE.txt.