Sample cross-Spark-version module (library?) build...
# dev
a
Sample cross-Spark-version module (library?) build.sbt: https://github.com/simplexspatial/osm4scala/blob/master/build.sbt. Going with something like that, unless we can find something simpler.
Looks a lot like a worked example of https://www.joekearney.co.uk/posts/sbt-two-artifacts-one-source, for Spark. But without all parts of the scalapb complexitry.