Nepomuk Backup is completely broken at this point. It was written in order to tackle both Backup and Synchronization. Anyone who has ever done anything related to synchronization will know that it is a hard problem. Just solving Nepomuk Backup is in fact quite simple and shouldn't take more than a week. Max. This bug is the high-level task which all other Nepomuk Backup related tasks will depend on.
Adding subtasks is too much of a pain.