Jenkins has various ways to "chain" projects together: triggers, promotions, copied artifacts, etc. However, assembling these into a complex continuous deployment pipeline can be painful. A new open source job type is under development that lets you use a single, readable Groovy script to orchestrate long-running build processes on one or more slaves. Complex control structures, human interaction and restarting from checkpoints are all within scope. Come hear about this powerful new system and get involved.