The hack branch of XHP-Lib is going to be merged into master for 2.0, allowing cool features like Awaitable XHP and typechecker support for attributes and typehints (in HHVM >= 3.6).

This means that master is going to stop being usable in PHP5, and the hack branch will stop being maintained, and eventually deleted.

If you are using Composer to install XHP-Lib:

  • Stop using dev-master or dev-hack in your composer.json as soon as possible
  • If you are currently using dev-master, switch to 1.6.* (tagged releases) or 1.x-dev (development branch)
  • If you are currently using dev-hack, switch to 2.x-dev