The native packager SBT plugin can be [configured to run with certain Java Opts](http://www.scala-sbt.org/sbt-native-packager/archetypes/java_app/customize.html) via the plugin configuration or an ini file that can be packaged with the deployable.



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When checking whether everything in a target set is present in an actual set, using `diff` and then checking for the empty set is quicker than `intersect`.