klvm-rs

Rust implementation of klvm.

GitHub Build Crate Build Wheels

PyPI

The cargo workspace includes an rlib crate, for use with rust or other applications, and a python wheel.

The python wheel is in wheel. The npm package is in wasm.

Tests

In order to run the unit tests, run:

cargo test

Fuzzing

The fuzzing infrastructure for klvm_rs uses cargo-fuzz.

Documentation for setting up fuzzing in rust can be found here.

To get started, run:

cargo fuzz run run-program --jobs=32 -- -rss_limit_mb=4096

But with whatever number of jobs works best for you.

If you find issues in klvm_rs please use our bug bounty program.

Build Wheel

The klvm_rs wheel has python bindings for the rust implementation of klvm.

Use maturin to build the python interface. First, install into current virtualenv with

$ pip install maturin

While in the wheel directory, build klvm_rs into the current virtualenv with

$ maturin develop --release

On UNIX-based platforms, you may get a speed boost on sha256 operations by building with OpenSSL.

$ maturin develop --release --features=openssl

To build the wheel, do

$ maturin build --release

$ maturin build --release --features=openssl

Bumping Version Number

Make sure you have cargo-workspaces installed:

cargo install cargo-workspaces

To bump the versions of all relevant crates:

cargo ws version --force "**" --all --no-git-commit

Select "minor update" if there has not been any incompatible API changes, otherwise "major update".

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Source Distribution

klvm_rs-0.17.7.tar.gz (1.2 MB view details)

Uploaded Aug 30, 2026 Source

Built Distributions

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klvm_rs-0.17.7-cp310-abi3-win_amd64.whl (1.0 MB view details)

Uploaded Aug 30, 2026 CPython 3.10+Windows x86-64

klvm_rs-0.17.7-cp310-abi3-manylinux_2_28_x86_64.whl (2.5 MB view details)

Uploaded Aug 30, 2026 CPython 3.10+manylinux: glibc 2.28+ x86-64

klvm_rs-0.17.7-cp310-abi3-manylinux_2_28_aarch64.whl (2.3 MB view details)

Uploaded Aug 30, 2026 CPython 3.10+manylinux: glibc 2.28+ ARM64

klvm_rs-0.17.7-cp310-abi3-macosx_15_0_x86_64.whl (1.1 MB view details)

Uploaded Aug 30, 2026 CPython 3.10+macOS 15.0+ x86-64

klvm_rs-0.17.7-cp310-abi3-macosx_15_0_arm64.whl (871.7 kB view details)

Uploaded Aug 30, 2026 CPython 3.10+macOS 15.0+ ARM64

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