 <p>i apologize if i don't understand the question, but maybe what you're looking for is this:</p> <p><a href="http://stackoverflow.com/questions/7366974/selectively-include-dependencies-in-jar">Selectively include dependencies in JAR</a></p> <p>so here's the plugin</p> <p><a href="https://github.com/nuttycom/sbt-proguard-plugin" rel="nofollow">https://github.com/nuttycom/sbt-proguard-plugin</a></p> <p>sbt proguard looks like it will cut down the unnecessary classes, so that your project will not be "heavy"</p>