I'm enforcing scalastyle check to my code space, referring http://www.scalastyle.org/sbt.html.
// scalastyle check
lazy val compileScalastyle = taskKey[Unit]("compileScalastyle")
compileScalastyle := org.scalastyle.sbt.ScalastylePlugin.scalastyle.in(Compile).toTask("").value
(compile in Compile) <<= (compile in Compile) dependsOn compileScalastyle
addSbtPlugin("org.scalastyle" %% "scalastyle-sbt-plugin" % "0.8.0")
[warning] ***./utils/ConfigManager.scala: File must end with newline character
<check level="warning" ...>
<check level="error" ...>
There are really only two simple options that I can think of.
The obvious one is to change your scalastyle config so that the warnings you want to cause build failure are errors. That's really what the scalastyle config is for. If you want something to be treated as an error, call it one!
<check level="error" ...> will give you the least amount of headache.
Otherwise, the only simple way to promote a warning to an error in sbt is to use the
scalacOptions ++= Seq("-Xfatal-warnings")
But that will convert all warnings in your project to errors, scalastyle or not.