SBT wastes a lot of disk space for dependencies, each of which builds

We have a Playframework 2.4 project (with SBT 0.13.8) that we are building on Jenkins.

Today Jenkins stops working because its $JENKINS_HOME

working completely. I analyzed which tool wastes disk space: SBT.

There is a folder located at

.sbt/0.13/dependency/module/dynamic

      

        
        
        
      

    

which contains quadrillions of subfolders. Each of them has one folder for each of our Play modules. Each of these folders contains one JSON file (graph.json)

. Looks like a huge graph of dependencies in JSON. 16MB

each individual assembly.

• What is the purpose of these data structures?
• Can I configure SBT to clean up these files after building?