Month: 2025-12 — Focused on improving build reproducibility for mozilla/sccache by fixing hash nondeterminism caused by the --check-cfg flag and adding test coverage. This work reduces CI flakiness, stabilizes cache behavior, and strengthens cross-environment build consistency.

Month: 2025-03 — Completed a major parser migration for RustPython by integrating the Ruff parser and updating the compiler's AST representation. Performed repository-wide changes (Cargo.toml, Cargo.lock) and aligned test files to the new parsing path. While a number of tests are currently marked as expected failures or TODOs to address Ruff integration gaps, the changes establish a more robust and maintainable parsing backend and enable future performance improvements.