Make Scala compiler stop on first error

Question

I'd like scalac to stop the build on the first error. I've been finding a large number of cases where all subsequent errors are caused directly by the first error, so those subsequent errors are just noise and I'd like to remove that.

Is there an option that I can pass to scalac to do this?

If it matters, I'm working on a Play Framework project and building via the Activator (using ~run to automatically rebuild on changes).

Answer 1

In sbt this is done quite simply by seting the maxErrors setting:

maxErrors := 1

If you want to set it temporarily for your current session, just do:

set maxErrors := 1

just before doing ~run