The topic might sound a bit extreme, but I believe it’s true.
I enabled HHVM on Tavis CI for the sake of doing a quick test. The result were errors in unit, functional and behat tests:
Some of that looks like things HHVM (and the compile step involved) related to “generated code”. With dynamic classes being even more attractive with PHP7, we should not target HHVM anymore. The speed gain HHVM promised is delivered by PHP7 and we have that working by now.
I agree, tried HHVM out as well previously before PHP 7 was out. But since then the argument for HHVM has become weak, especially for something like Flow/Neos. So don’t really see much benefit in spending resources keeping it compatible with HHVM currently. Additionally nobody really requests or complains about it. So our efforts are properly better spend elsewhere.
So I’d not say HHVM is obsolete and can just be ignored, but it’s definitely not something that a lot of people will use as a Flow/Neos setup, let alone because setting up a PHP environment is just so much more straightforward. So saving resources here is ok.
Since we will probably keep working with HHVM a bit longer, maybe I can spend a few hours in getting tests back to running (sometime in january probably).
Of course, feel free! Would be cool to support it, so if you find the time and use it anyway…