GIMP Extension Infrastructure and Validation System

The current extension ecosystem for GIMP lacks a structured and automated infrastructure for validating, publishing, and distributing extensions. This project aims to build a scalable and security-focused extension management system by improving the gimp-extensions-web infrastructure and automating the extension lifecycle. The proposed solution introduces a GitLab-based workflow where extension submissions are validated through automated CI pipelines. Python-based validation tools will ensure compliance with metadata standards, extension structure, and security constraints. After approval, extensions will be maintained in dedicated repositories under the GNOME GitLab organization, allowing maintainers to manage releases through version control and automated packaging of .gex extension packages. Additionally, the project will implement a central metadata aggregation system that collects validated AppStream metadata from all extension repositories and generates a repository snapshot (extensions.xml.xz). This aggregated metadata will allow GIMP to efficiently browse, search, and install extensions using a single metadata source. The final deliverables include a validation framework, automated submission workflow, CI-integrated packaging system, and a metadata aggregation pipeline for the GIMP extension repository.