January 2026 monthly summary for Gazebo projects (2026-01). Focused on delivering stability, performance improvements, and clearer release planning across the sdformat, gz-sim, and docs repositories. Work targeted build reliability, memory/perf optimization, dependency management, and documentation clarity to support faster, safer releases and higher developer velocity.

December 2025: Delivered two targeted enhancements across Homebrew/brew and gazebosim/sdformat focused on performance, reliability, and CI stability. Implemented Formula Auditor Optimization to skip non-core compatibility checks and stabilized related tests; added macOS build dependencies installation to the build workflow to ensure consistent macOS builds. These changes improve build trust, reduce audit time, and support more predictable release cycles.

Month: 2025-11 | Repository: Homebrew/homebrew-core Key features delivered: - Dartsim: Added CMake-based test dependency to the Dartsim formula, enabling building and testing with CMake. - Introduced a new integration test executable to verify DART-Dartsim interoperability. Major bugs fixed: - None reported for this repository this month. Overall impact and accomplishments: - Strengthened build reproducibility and CI reliability for Dartsim packaging in Homebrew-core, lowering regression risk for users adopting CMake-based workflows and enhancing confidence in cross-library integration. Technologies/skills demonstrated: - CMake-based testing, test dependency management, integration testing, DART/Dartsim interoperability, and Homebrew-core packaging workflows.

September 2025 monthly summary for gazebosim/sdformat focused on stabilizing the macOS CI build to protect the release pipeline and unblock developer work. No user-facing features delivered this month; core emphasis on CI reliability and build pipeline improvements.

2025-08 Monthly Summary — gazebosim/sdformat. This period focused on improving upgradeability, release readiness, and CI stability. Key outcomes: 1) Install path simplification and migration guide update to remove version-specific subdirectories, smoothing upgrades; 2) Release notes and changelog update for libsdformat 16.X (Jetty release) detailing bug fixes, build improvements, dependency updates, and deprecation removals, with baseline description and PR references; 3) CI and docs update for branch rename from main to sdf16, ensuring pipelines and links point to the new default development branch. Impact: clearer upgrade paths for users, more transparent release communication, and more robust development workflows. Skills demonstrated: release engineering, documentation, CI/CD, branch management, and version control.

July 2025 performance summary focused on stability and reliability across gazebosim/sdformat and gazebosim/gz-sim. No new features deployed this month; two high-impact bug fixes improved build robustness and runtime behavior. The changes reduce developer debugging time, prevent build/runtime failures in CI, and strengthen overall product reliability for downstream users.

Month: 2025-06 — gazebosim/gz-sim: Focused on delivering code quality improvements and more stable Noble builds through CI enhancements and hygiene improvements. Consolidated changes to improve code quality, static analysis in CI, test reliability by using loopback address, and general code hygiene. Commit traceability provided via linked changesets.

May 2025 monthly summary focusing on key accomplishments across three repositories: Homebrew/brew, gazebosim/sdformat, and gazebosim/gz-sim. Delivered reliability fixes, simplified test infrastructure, and modernized dependencies to enable faster iterations and improved sensor data handling in the Gazebo ecosystem.

April 2025 monthly summary for Gazebo organization. Delivered key infrastructure and CI improvements across gazebosim/gz-sim, gazebosim/sdformat, and gazebosim/docs. Focused on build system modernization, dependency upgrades, test reliability, and CI coverage for Python bindings and documentation checks. Updated user installation guidance to reflect current releases, enhancing maintainability and end-user experience.

March 2025 delivered meaningful reliability and maintainability improvements across Gazebo's sdformat and gz-sim repos, with a focus on robust build processes, stable nightly CI, and cleaner packaging. These changes reduce build failures, stabilize nightly validation, and minimize unnecessary installations, accelerating iteration cycles and safer releases.

February 2025 (2025-02) — gazebosim/sdformat Key features delivered: - Contextualize Python development library availability warnings in CMake: co-located and context-aware warnings when Python subdirectory is added, by refactoring the CMake build logic. Commits: 25c4dc03dfaee098f48d6093cba75560f14efbf6; 709e59773d6324fa9830ab82dd62d129ff1c7012. (#1541) - Inertial calculation failure handling policy in CalculateInertial: introduced a configurable policy to either report an error or use default inertial values with a warning; updated enums, class methods, tests, and applied in Collision::CalculateInertial. Commits: 39826d49f98abb9bb2229a5aab6ecb26649c5f49; 5cd14409a204ed3562a38da29fd445e77cd2d9c5. (#1543) Major bugs fixed: - No explicit bug fixes reported this month; primary focus on feature enhancements and build-system reliability. Overall impact and accomplishments: - Improved developer experience with clearer, context-relevant build warnings; enhanced robustness by making inertial failure handling configurable, reducing downstream failures and enabling safer defaults. - Strengthened SDFormat API/behavior contract with explicit policy, supported by tests and targeted code changes. Technologies/skills demonstrated: - CMake scripting and build-system refactoring; Python integration in build feedback - API design and policy-driven behavior; enums, methods, tests - Test-driven development and code maintainability; clear commit messages

January 2025: CI quality improvements and dependency management across gazebosim/sdformat and gazebosim/docs, enabling earlier defect detection, faster onboarding, and more maintainable build/setup processes.

December 2024 monthly performance summary: Delivered two high-impact features across gazebosim/sdformat and gazebosim/gz-sim, reinforcing version accuracy and sensor management usability. Key features delivered: 1) Dynamic package versioning for SDFormat by deriving the version from package.xml using gz_get_package_xml_version, replacing the hardcoded SDF_VER (commit 69c82c00fae5102f360b299ff6f396bab126ced3). 2) Link Sensor Accessor APIs in gz-sim: new APIs to retrieve a sensor by name, list all sensors on a link, and count sensors, exposed via Python bindings with corresponding header/source updates and tests (commits 7f002d6a669df22654ad7a9c0d59770c5d3b6783 and 1db0c277536901e2a06de819291338815776f63e). Major bugs fixed: none reported this month. Overall impact: improves build consistency, reduces version drift, and simplifies sensor workflow in simulation pipelines, enabling faster iterations and more reliable deployments. Technologies/skills demonstrated: Python bindings, C++ header/source updates, test-driven validation, cross-repo changes, packaging/versioning strategies.

November 2024 delivered cross-repo governance, build-system enhancements, release readiness, and test environment stability across gazebosim/docs, gazebosim/sdformat, and gazebosim/gz-sim. The work improves governance transparency, flexibility for multi-env Python usage, release readiness for the 15.1.0 cycle, and reliability of test executions.

October 2024 monthly summary for Gazebo projects focusing on onboarding improvements and startup configurability. Delivered two focused features across two repositories, enhancing developer experience and deployment reliability.