hylo-lang/hylo
The Hylo programming language observed · 2026-08-28
Health v2 · maintenance only
83/100
- Activity 99
- Release rhythm 52
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 2047
- days_rel: 111
- days_push: 9
- n_releases_24m: 1
Adoption not part of the score
1551 stars · 64 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Hylo (formerly Val) is a systems programming language built around mutable value semantics and generic programming, implemented in Swift with LLVM. This repository contains the former compiler implementation, with active development having moved to the hylo-lang/hylo-new repository.
Use cases
- compile programs written in the Hylo language
- experiment with mutable value semantics in a systems language
- study compiler implementation using Swift and LLVM
- contribute to programming language research
- explore generic programming language design
- build a language toolchain from source with CMake or Swift Package Manager
When to choose
- you want to experiment with or research value-semantics-based language design
- you want to contribute to compiler development or PL research
- you need to build or test the legacy Hylo compiler toolchain
When to avoid
- you need a production-ready language for shipping software
- you want the current Hylo compiler, which is developed in hylo-lang/hylo-new
- you need mature tooling, debuggers, or ecosystem support
Facets
cli-tool · maturity active
compiler programming-language developer-tools programming-languages compilers developer-tools windows cpp value-semantics generic-programming systems-programming llvm language-implementation research-language macos linux swift
6 sources
- readme: https://github.com/hylo-lang/hylo · fetched 2026-08-28 · 60333ce4e5aa
- homepage: https://www.hylo-lang.org · fetched 2026-08-29 · d7b98fbe123d
- site_page: https://hylo-lang.org/docs/contributing/research-collab · fetched 2026-08-29 · 8d5da048e7a9
- site_page: https://hylo-lang.org/docs/contributing/community · fetched 2026-08-29 · 57da890a7295
- site_page: https://hylo-lang.org/docs · fetched 2026-08-29 · f22b11000fb5
- site_page: https://hylo-lang.org/docs/contributing · fetched 2026-08-29 · 48c1816f9c8b
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| hylo-lang/hylo | main | 83 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem