Too many open files errors on mac

[jakemac53]

We should dial back our max number of open files and see if that resolves the issue, otherwise the issue may be in the analyzer or dartdevc workers.

cc @kwalrath

[jakemac53]

Additional ideas here involve checking the ulimit on mac before doing builds, and catching these specific errors and dealing with them in a more friendly way.

[kwalrath]

The workaround is to increase the limit. Here's what I used on my Mac:

ulimit -n 1024
pub run build_runner serve

[natebosch]

I think the ulimit -n 1024 fix is temporary - that only applies to the terminal you're running in. I think if you start a new terminal or log out and back in you'll hit this issue again.

https://superuser.com/questions/302754/increase-the-maximum-number-of-open-file-descriptors-in-snow-leopard