Loreley is a system for evolving programs on a repository scale using quality-diversity search. It retains complete repository states in an archive and samples them as parents or context for later edits. In an experiment, Loreley was compared to sequential champion editing and independent root proposals, but neither showed a significant advantage over the other at 48 jobs. --- Why it matters: This matters because it explores new ways to evolve programs on a large scale, which is important for researchers working on software development and maintenance tasks. Source: https://arxiv.org/abs/2608.19703