this is just a regular maven packed as gem. mainly used by ruby-maven
Maven and its dependency libraries will be fetched into ./maven-home, so before any any release old artifacts should be cleaned out with
./mvnw clean
This will ensure only the current Maven version will be included in the resulting gem.
adjust the version in lib/maven.rb and then execute
./mvnw deploy
this will push the gem to rubygems.org
it just comes with the same license as maven itself and all the license info can be found under maven-home/ after
./mvnw package