# tvlfyi/tvix

Tvix - A Rust implementation of Nix. Read-only mirror of https://code.tvl.fyi/tree/tvix

Repository: https://github.com/tvlfyi/tvix
Canonical: https://ross.abutalabs.com/products/tvix
Language: Rust
License: GPL-3.0
License Family: copyleft
Last push: 2026-08-23T18:32:39+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 93
- inputs: {"age_days": 1309, "days_push": 10, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1085, forks 18 (observed 2026-08-28T04:03:31.966417+00:00)

## What it is
Tvix is a Rust implementation of the Nix language and package manager, developed by TVL as an alternative to the C++ Nix. It includes components for Nix evaluation, content-addressed storage, building, and Nix-compatible daemons and binary caches.

## Use cases
- evaluate nix expressions in rust
- replace c++ nix with a rust implementation
- run a nix binary cache server
- use nix language for app configuration in rust
- content-addressed package storage
- experiment with nix language internals

## When to choose
- you want to hack on or experiment with a Rust reimplementation of Nix
- you need Nix-compatible components like a binary cache or store daemon in Rust
- you want to embed Nix evaluation in Rust applications

## When to avoid
- you need a production-ready Nix package manager today
- you require stable APIs
- you want a drop-in replacement for all C++ Nix features

## Facets
- artifact type: library
- maturity: experimental
- function: interpreter, package-manager, compiler, parser, serialization, cli, build-tool
- domain: developer-tools, programming-languages
- platform: rust, cli
- tags: nix, package-manager, reproducible-builds, content-addressed-storage, language-implementation, binary-cache, devops, command-line, linux, macos

## Member repositories
- tvlfyi/tvix (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:31.966417+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:49:53.971817+00:00, confidence not recorded.
  - readme: https://github.com/tvlfyi/tvix (fetched 2026-08-28T04:03:31.966417+00:00, sha ffff6aa1366e)
- Data as of 2026-08-30T08:39:29.467469+00:00.