Exactly, at first I was trying to call a component from another component, but it didn't work. Then I thought it would be more natural to do this using a pipeline, but it didn't recognize the user_config_creation function despite I imported it as I would do under PipelineDecorator.component . I really like the idea of enabling an argument to specify the components you are going to use in the pipeline so they are in the step's context! I will be eagerly waiting for that feature :D