As mentioned a couple of months ago, Dezi has been Moosified. The final port of the older code has been released to CPAN as Dezi::App. The 0.400 version of Search::OpenSearch::Engine::Lucy uses Dezi::App instead of SWISH::Prog::Lucy.
Performance is comparable to the older SWISH::Prog-based code, and should provide a cleaner, more community-conformant base upon which to build.