April 2026 monthly summary focusing on feature delivery, bug resolution, and overall impact for spack-packages. The main deliverable this month was the Truchas package release series with updated dependencies (versions 25.11, 25.12, 26.02, 26.04), enabling users to access latest features, improved compatibility, and security fixes.

In Oct 2025, delivered packaging updates for spack/spack-packages to support Truchas with MUMPS direct solvers, along with version bumps and integrity checks to ensure reproducible builds. This work enhances solver performance, reduces build failures, and improves downstream workflow reliability for HPC users.

In August 2025, focused packaging work delivered a critical Spack release update for py-unyt, enhancing reliability, reproducibility, and traceability in the Spack ecosystem.

May 2025: Delivered cross-repo build and packaging improvements for the Spack ecosystem, focusing on dependency compatibility and CMake-based builds. Implemented a build-system compatibility update to include C++ when using CMake, and modernized Spack packaging for petaca, scorpio, and truchas to support newer toolchains. These changes reduce build failures, improve interoperability with newer libraries, and streamline deployments across spack/spack and spack-packages.