# LuxLang/lux

The Lux Programming Language

Repository: https://github.com/LuxLang/lux
Canonical: https://ross.abutalabs.com/products/luxlang-lux
Language: Emacs Lisp
License: Apache-2.0
License Family: permissive
Topics: language, programming-language, macros, functional-programming, lisp, haskell, clojure, functional-languages, types, jvm-languages, javascript, python, ruby, lua
Last push: 2026-08-26T05:38:52+00:00

## Health v2 (maintenance only)
Score: 72/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 22, longevity 100
- inputs: {"age_days": 4139, "days_push": 7, "days_rel": 305, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1741, forks 57 (observed 2026-08-28T04:05:30.288646+00:00)

## What it is
Lux is a functional, statically-typed Lisp programming language with a compiler that targets the JVM, JavaScript, Python, Lua, and Ruby. It features monadic macros, extensible compiler semantics, first-class types as data structures, and multiple concurrency paradigms including STM, FRP, and the actor model.

## Use cases
- write statically-typed functional programs in a lisp syntax
- compile one codebase to jvm bytecode and javascript
- build polyglot libraries consumable from java python ruby or lua
- experiment with extensible language semantics and compiler extensions
- use macros to generate type-driven code
- explore concurrency paradigms like stm frp and actors

## When to choose
- you want a lisp with static types and functional programming
- you need a single language compiling to multiple platforms like jvm and javascript
- you want deep macro and compiler extensibility for language experimentation
- you need glue code across polyglot projects

## When to avoid
- you need a production-proven language with a large ecosystem and hiring pool
- you require guaranteed stability, since the language is in beta
- you need first-class tooling, ides, or extensive third-party libraries
- your team has no experience with lisps or advanced type systems

## Facets
- artifact type: cli-tool
- maturity: active
- function: compiler, programming-language, interpreter, concurrency
- domain: programming-languages, compilers, developer-tools
- platform: jvm, python, ruby, lua, cross-platform
- tags: lisp, statically-typed, functional-language, macros, clojure-inspired, haskell-inspired, multi-target-compiler, metaprogramming, macro, functional-programming, javascript

## Member repositories
- LuxLang/lux (main) score 72

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:30.288646+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 2026-08-30T03:30:01.431130+00:00, confidence not recorded.
  - readme: https://github.com/LuxLang/lux (fetched 2026-08-28T04:05:30.288646+00:00, sha 3bc65ed23224)
- Data as of 2026-08-30T08:39:29.467469+00:00.