Mahout modules which are Scala libraries like mahout-math-scala, mahout-spark/mahout-spark-shell, should be published across Scala binary versions to be usable to wider audience. At the moment this is not possible with Maven. We need to switch to another build tool which supports this, and SBT is most natural choice. Besides allowing us to publish Mahout Scala libraries across Scala binary versions, it is expected that this migration will help us mitigate/resolve other issues (to name a few, issue of publishing javadoc/scaladoc documentation, and long standing issue of migration to modern CLI library with sources).
As acceptance criteria of migration success it should be defined that both project committers and users see only improvements/benefits, everything else that was possible and available with existing Maven build should be possible with SBT.