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Automating "downstream" Debian package builds and updates in CI

Talkat DebConf 2025 · on Thursday, 2025-07-17· at 15:30· Grand amphi· [devops-and-delivery, developer-experience]

Describes tooling built for GitLab CI that automates monitoring Debian for package updates, merging those updates into locally modified or backported Debian packages, building the merged packages, and uploading them to a staging apt repository. Implements a git-first workflow (avoiding quilt) so developers can make source changes in git and have CI handle merges with Debian stable/security fixes and package builds. The tooling is Free Software and intended for reuse outside Wikimedia where teams need to modify or backport Debian packages and keep them in sync with upstream fixes.

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