Large parts of Slack's backend are written in Hack, a fancy superset of PHP. We'll always keep PHP in our hearts, but Hack is an impressive improvement. Our own Scott Sandler wrote down why we like Hack so much and how we migrated our code base: slack.engineering/hacklang-at-sl…

HHVM 4.65 is released, with changes to array/darray/varray, globals, and `yield from` hhvm.com/blog/2020/07/0…

The Hack Standard Library (HSL) is now built in to HHVM 4.108 and the typechecker, including HSL-IO, which is no longer experimental hhvm.com/blog/2021/05/0…

We’re on Slack! Come join us at hhvm.com/slack

GitHub copilot works with Hack and Nuxed Framework 🤯

I just released Tarry, a small Hack TAR utility: github.com/azjezz/tarry/t…

Sorry y’all, we’re delaying this weeks release (we’re expecting Thursday) to fix an assertion failure we’re seeing in many open source projects on our nightly builds

Security update for all supported releases: hhvm.com/blog/2021/07/2…

I'm delighted that we're finally able to open source Glean, the system we're building at Facebook for collecting and querying information about code: glean.software [1/8]

Glean is designed for high-performance large-scale source code indexing. Store information about your source code and query it efficiently, to power things like IDEs, code browsers, and analysis tools. [2/8]

Initially we've open-sourced indexers and schemas for Javascript (Flow) and Hack/PHP, there also exist indexers for Python, Rust, C++/Objective C, and Java that we hope to open-source in the future. We'd welcome community-contributed indexers for other languages. [6/8]

We are cancelling the release of 4.125 due to issues with the RC builds; we expect to continue with 4.126 next week.

If you’re having trouble with breakpoints in VSCode outside of lambdas, add hhvm.debugger.enable_debugger=1 to your configuration. This is only intended to be necessary for hphpd, but was accidentally used elsewhere. We’re also working on the lambda issues.

Join Sarah Henkens tomorrow talking about exploring Hack applications with ArangoDB!

We’re skipping 4.132 due to issues with the nightly builds; we expect to be back with 4.133 next week.

We have a new LTS, 4.153! We’re also going to be moving to a two-week cycle - read more at hhvm.com/blog/2022/03/1…

Security update for all supported releases: hhvm.com/blog/2022/03/2…

If anyone is interested in learning a new language, I just pushed an update/overhaul for the Hack language (Hack) to the Learn X in Y Minutes site. Hadn't had a major update in >7 years! learnxinyminutes.com/docs/hack/

It’s time for a new LTS! 4.168 is out, ending support for 4.128: hhvm.com/blog/2022/09/0…