In February 2025, delivered a CMake Build Environment Reliability Enhancement for the spack/spack repository. The change improves build reliability by honoring package-specific cmake_prefix_paths, ensuring correct entry order, deduplicating duplicates, and normalizing Windows paths. This directly reduces build failures caused by misconfigured CMake environments and stabilizes packaging workflows across platforms. The work aligns with ongoing quality improvements and is tracked by implementing the cmake_prefix_paths property (commit fe171a560b4f7b55a4e40feaebaf5c0bc9ff8193, #42569).

January 2025 — DUNE/dunesim: Implemented explicit ifdhc dependency in the top-level CMake build to replace implicit/dependent includes; cleaned up subdirectory includes and library links in the event generator to reduce coupling and remove redundant references. This improves build reliability, simplifies maintenance, and accelerates onboarding for new contributors. Commit 21f98f59bfacc8e90a787122e4802176f48bc6ca documented for traceability.

December 2024 performance summary: - Key features delivered: • SBNSoftware/icaruscode: Updated SBNCode version in product_deps to align with the latest release, enabling downstream components to leverage new features and fixes. (Commit: 626c572b90571faaa9caa54a912d78ceb2c93713) • SBNSoftware/sbncode: Simulation environment maintenance and accuracy improvements through updates to LArSoft and nusystematics, and upgrading geometry interface usage to the WireReadout service for FilterSimEnergyDeposits, resulting in improved drift point accuracy. (Commits: 320c86be447e4d306acfa8a7973e824fc6ea9452; cf9c012f213e3539eeacbe62f227fba2b9d4ef10) • spack/spack: Intel TBB package now supports versions 2021.13.0 and 2022.0.0, including checksums to ensure reproducible builds. (Commit: b78c5175823910bc1f57e59a07d0b8c636e3f02d) • spack/spack-packages: Intel TBB package version support extended to 2021.13.0 and 2022.0.0 with corresponding SHA256 checksums, broadening platform coverage. (Commit: 0a950459808d996ae536dd3815e665b72ac7f7c9) - Major bugs fixed: • Drift point accuracy issues in simulation addressed via updated LArSoft versions and the WireReadout-enabled geometry interface in sbncode, reducing drift discrepancies in FilterSimEnergyDeposits. • Dependency compatibility fixes achieved by aligning the product / package dependencies to current releases, minimizing build-time conflicts. - Overall impact and accomplishments: • Improved simulation accuracy, stability, and reproducibility across the software stack, enabling more reliable physics analyses and smoother downstream workflows. • Enhanced build reliability and portability with updated dependencies and expanded Spack coverage for newer Intel TBB releases, supporting broader hardware and compiler configurations. • Clear foundation for upcoming releases with maintainable dependency management and documented upgrade paths. - Technologies/skills demonstrated: • Dependency management, build-system modernization, and integration across LArSoft/Nusystematics and WireReadout interfaces. • Software packaging and distribution with Spack, including version support, checksums, and reproducible builds. • Version control discipline and traceability through precise commit-level descriptions.