Upgrade to deployer 8

[garak]

I've tried to upgrade from deployer 7.5 to 8.0-alpha2, the update was smooth, but as soon as I've tried to deploy something, I hit an exception telling Required PHP extension "sockets" is not loaded.
So I've checked the code, and I've found that also the stream extension is now a requirement.

I have a few questions:

1. why these new requirements?
2. when can we expect to get the 8.0 breaking changes documented?
3. if the new extensions are really required, why aren't they explicit in composer.json?

[antonmedv]

1. Deployer v8 now uses parallel execution by default. And to do than sockets are needed for IPC.
2. It is done in here: https://github.com/deployphp/deployer/blob/master/docs/UPGRADE.md
3. Yes, sockets and stream extensions are required.

why aren't they explicit in composer.json?

Usually, they are enabled by default. Do you think they should be included? Are other php project do it?

[antonmedv]

Would it be possible to disable the parallel execution, so one wouldn't need to add those extensions?

I think so, it is possible to do deployment one by one.

[garak]

Would it be possible to disable the parallel execution, so one wouldn't need to add those extensions?

I think so, it is possible to do deployment one by one.

How so? I just tried to run php bin/dep deploy production --limit=1, but I still get the exception

[antonmedv]

We need to develop this feature. To simplify development of v8, I decided what all execution will be in parallel.

[garak]

Fair enough. So do you want me to open another discussion, marked as "feature"? So we can resolve this one. Thanks

[antonmedv]

Yes, I guess it's better to track it independently.