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/cli - preliminary REPL & CLI implementation for Tvix//tvix/eval - an implementation of the Nix programming language//tvix/nix-compat - a Rust library for compatibility with C++ Nix, features like encodings and hashing schemes and formats//tvix/serde - a Rust library for using the Nix language for app configuration//tvix/simstore - a store implementation for Tvix that can calculate store paths without doing I/O (but not much more)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: