Yannick Forster developed cross-version packaging updates for the MetaCoq project in the coq/opam repository, focusing on enabling seamless distribution and build support for Coq versions 8.19 and 8.20. He implemented new opam package definitions for MetaCoq versions 1.3.3 and 1.3.4, ensuring compatibility across these Coq releases. Leveraging his expertise in build systems, package management, and the OCaml language, Yannick validated the packaging process to support continuous integration and build workflows. His work improved release readiness and reduced onboarding friction, enhancing the automation and maintainability of MetaCoq’s packaging infrastructure within the broader Coq ecosystem.