Tvix is a new implementation of Nix, a purely-functional package manager. It aims to have a modular implementation, in which different components can be reused or replaced based on the use-case.

Tvix is developed as a GPLv3-licensed open-source project by TVL, with source code available in the TVL monorepo.

There are several projects within Tvix, such as:

• //tvix/eval - an implementation of the Nix programming language
• //tvix/serde - a Rust library for using the Nix language for config files
• //tvix/nix-compat - a Rust library for compatibility with C++ Nix features like encodings and hashing schemes
• ... and a handful others!

The language evaluator can be toyed with in Tvixbolt, and you can check out the Tvix README (GitHub mirror) for additional information on the project and development workflows.

Developer documentation for some parts of Tvix is available online.

Check out the latest Tvix-related blog posts from TVL's website: