Related to

Create auxillary OSGi test bundle

https://jira.jboss.org/browse/arq-193

Currently the signature of DeploymentPackager is

public interface DeploymentPackager
{
   /**
    * @param applicationArchive The user defined deployment archive
    * @param auxiliaryArchives All found system defined deployment archives
    * @return A archive to deploy
    */
   Archive<?> generateDeployment(Archive<?> applicationArchive, Collection<Archive<?>> auxiliaryArchives);
}

I suggest, that event callbacks generally get access to the Context. i.e.

public interface DeploymentPackager
{
    /**
    * Inspect, validate and optionally modify the user defined archive.
    * 
    * Additional archives can be added to the given list of auxiliaryArchives.
    * The returned archive together with the auxiliaryArchives will get deployed 
    * to the container.
    * 
    * @param context The test lifecycle context
    * @param archive The user defined deployment archive
    * @param auxiliaryArchives All found system defined deployment archives
    * @return A archive to deploy
    */
   Archive<?> generateDeployment(Context context, Archive<?> archive, Collection<Archive<?>> auxiliaryArchives);}

In this way there would be a communication path between event handlers. One handler, can attach an artefact which another handler can then consume.