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HHY Language V1.7.1

Pipe Everything.

A flow-first scripting language for system automation

HHY unifies files, processes, network requests, and structured data through one pipeline model.

Get StartedInstall V1.7.1
macOS / Linuxcurl -fsSL https://hhylang.dev/install.sh | sh
FlowOne Stream model
PipeThe composition core
SystemSystem capabilities as values

Featured

Build your website with HHY CMS

An open-source CMS with guided installation, content management, a media library and a corporate theme. HHY powers the application and pages; MySQL stores the content.

Install
Content
Media
Theme
Publish
app.hhy HHY CMS v0.1.2
import "lib/core.hhy" as cimport "lib/application.hhy" as cmsfn configured_port() {    if length(args) > 0 { return to_int(args[0]) }    return to_int(c.fallback(env.CMS_PORT,"9100"))}cms.start(configured_port())
Application entry · Load CMS and read the startup port
Explore CMS · Download and setup
Run onmacOSLinuxWindows (WSL2)

On Windows, install HHY and the database extension inside WSL2 Linux.

Current release

v1.7.1 · Resource ownership and controlled concurrency

Fixes Context GC roots, Stream closure, task teardown and no-replace publication. Seven opt-in APIs add owner-bound atomic state, cooperative file updates, strict database transactions and bounded tasks.

Read the 1.7.1 concurrency guide
Reference

All 128 core callables

Complete signatures and purposes from the Runtime Callable Contract Registry.

Browse function index
Editor support

Syntax support for .hhy files

One syntax source generates VS Code and Sublime Text packages with highlighting, comments, brackets, indentation, and snippets.

Install language support
V1.7.1 is released and publicly verified on four platforms

Local Release, ASan/UBSan, differential, fuzz and quota tests pass. Four-platform Actions and release validation pass; 1.7.1 is published. Optimizations stay opt-in; synthetic gains are not general performance claims.

View verification