Drop Ubuntu 20.04 from CI and package builds. #21647
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It went EOL upstream on 2025-05-31.
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Architecture diagram
sequenceDiagram
participant GHA as CI Orchestrator
participant Config as .github/data/distros.yml
participant Runner as Build Runner
participant Legacy as Legacy Archive
Note over GHA,Legacy: Pipeline Matrix Generation Flow
GHA->>Config: Read platform definitions
Config-->>GHA: Return distro lists
Note right of GHA: Processing 'include' vs 'legacy' lists
loop For Active Distros (e.g., Ubuntu 22.04, 24.04)
GHA->>Runner: Schedule Build Job
Runner->>Runner: Execute Tests
Runner-->>GHA: Success
end
alt CHANGED: Ubuntu 20.04 (Focal)
Note right of GHA: Now identified as 'legacy'
GHA->>GHA: Skip Matrix Generation
Note over Runner: No job spawned for 20.04
GHA-->>Legacy: (Implicit) Maintain existing packages only
end
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Summary
It went EOL upstream on 2025-05-31.
Test Plan
n/a
Additional Information
Closes: #20231
Summary by cubic
Dropped Ubuntu 20.04 (Focal) from CI and package builds due to upstream EOL on 2025-05-31. Moved it to the legacy list and updated platform support docs.
Written for commit 2fe3001. Summary will update on new commits.