In December 2025, Sergey Levchuk enhanced the 389ds/389-ds-base repository by addressing a cross-platform build issue related to NSS include paths. He implemented a platform-agnostic resolution using pkg-config, replacing hard-coded paths and thereby improving build consistency across different Linux distributions. This change streamlined the build system configuration, reduced maintenance overhead, and increased the reliability of continuous integration pipelines. Working primarily in C, Sergey demonstrated a strong understanding of cross-platform development and build tooling. Although the contribution focused on a single bug fix, it addressed a nuanced compatibility challenge and contributed to a more robust and maintainable codebase.