I've also suffered a lot of pain in trying to get libraries that were not design for OSGi (i.e. legacy) to work well. However, when having the luxury of implem

I've also suffered a lot of pain in trying to get libraries that were not design for OSGi (i.e. legacy) to work well. However, when having the luxury of implementing a clean set of services from scratch, OSGi is lovely. We run a large OSGi based system in production, and the modularity, hot-deployability, strong-typing-with-contracts, etc is just lovely. I certainly won't try to say that OSGi is simple, but for complex systems that have to evolve over a long time span, it solves problems no other environment even nearly does.