During March 2025, Andrew Chau worked on enabling Trilinos 16.1.0 support across the spack/spack and spack/spack-packages repositories. He implemented versioning, SHA256 checksums, and updated Kokkos and Kokkos-kernels dependencies to ensure compatibility and stable builds for users relying on Trilinos. Using Python and leveraging skills in build systems and dependency management, Andrew focused on cross-repository consistency, propagating changes to reduce divergence and simplify user workflows. His work improved build reproducibility by explicitly pinning versions and checksums, addressing potential build failures and ensuring that new features depending on Trilinos 16.1.0 could be reliably deployed and maintained.