Adam worked on the aspect-build/rules_py repository, focusing on improving Bazel backend reliability by addressing issues with repository name handling for package versions containing the "+" character. He implemented logic in Python and Bazel to normalize "+" to underscores during repository name generation, preventing invalid-name errors that previously disrupted builds. Adam also updated uv.lock-related processes to ensure consistent handling of plus-containing versions across repository rules and lock resolution. Comprehensive tests were added to cover these edge cases, verifying correctness and guarding against regressions. His work enhanced build robustness and reduced runtime errors, demonstrating careful attention to detail in backend development.