March 2026 monthly summary for bazel-central-registry. Focused on stability and compatibility in the Bazel ecosystem. Delivered a critical rollback of rules_scala 7.2.3 to restore compatibility with older Bazel versions, preventing dependency-graph conflicts and build failures for downstream users. The rollback was implemented in the repository and documented in commit a494e337a72cf00a05e6f23a57e7ab0248fbe294, referencing bazel-contrib/rules_scala issues 1816 and 1817. This change preserves compatibility for Bazel versions before 8.6.0/9.1.0 and aligns module directive behavior with long-term support goals.

December 2025: Delivered targeted enhancements to the scala/scala reporting system, focusing on source path filtering and virtual-file handling to improve warning accuracy and compatibility with Bazel 9 and Scala 3. Changes were implemented in two commits: (1) Don’t resolve symlinks in -Wconf:src to use absolute and normalized paths for filtering, aligning behavior with Scala3 practices; (2) Ensure -Wconf:src filter handles VirtualFiles by falling back to pos.source.path when absolute.file is null. Added tests validating virtual-file behavior and the new path-resolution logic.

June 2025: Focused on stabilizing the build system for protocolbuffers/protobuf. Key achievement: fixed build issues by updating protobuf_deps.bzl to include rules_jvm_external 6.7, ensuring compatibility with Bazel 8.2.1 and the latest rules_java. This reduces upgrade friction and improves CI reliability for downstream consumers.