On Tue, Sep 19, 2017 at 10:13:47AM +1000, Tim Starling wrote:
> On 19/09/17 06:58, Max Semenik wrote:
> > Today, the HHVM developers made an announcement[1] that they have plans of
> > ceasing to maintain 100% PHP7 compatibility and concentrating on Hack
> > instead.
>
> The HHVM team did tell us privately that they were planning on
> changing their strategy, basically as you describe it above. The
> surprising things for me in this announcement were:
>
> * The plan to also drop PHP 5 compatibility, on a short timeline (1 year).
> * Rather than "drifting away" from PHP, their top priority plans
> include removing core language features like references and destructors.
>
> > While this does not mean that we need to take an action immediately,
> > eventually we will have to decide something.
>
> Actually, I think a year is a pretty short time for ops to switch to
> PHP 7. I think we need to decide on this pretty much immediately.
The next step would be the upgrade of the mw* fleet to Debian stretch
while still using HHVM 3.18 (to minimise disruption since we've stabilised
3.18 in it's current build). That work is tracked at T174431. 3.18 will
be supported by upstream for at least another six months (and if the migration
drags
further I can roll custom 3.18 security backports from later LTS releases)
Debian stretch ships PHP7, so that'd be a good stepstone to migrate
back to Zend.
Cheers,
Moritz
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