Worked on the macports/macports-ports repository to deliver PostgreSQL 18 compatibility for the GDAL Portfile, ensuring the port now defaults to postgresql18 and aligns with the latest PostgreSQL features. This update streamlined deployments for users adopting PostgreSQL 18 and provided a clearer upgrade path for future maintenance. The work involved customizing Portfiles using Tcl scripting, integrating database dependencies, and managing port configurations to minimize deployment issues. No major bugs were recorded during this period, reflecting a focused approach on feature delivery. The changes improved the maintainability of the GDAL port and demonstrated careful version management within the MacPorts ecosystem.