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docs: encourage resilient overlays - #19856
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Christopher Co (christopherco) merged 1 commit intoOct 31, 2026
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Christopher Co (christopherco) merged 1 commit into
Christopher Co (christopherco) merged 1 commit into
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Guide agents to minimize coupling to unrelated source details while retaining enough context to target changes unambiguously. This avoids brittle overlays without prescribing a particular matching technique. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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🟢 Approval recommended
No active review issues remain for the overlay-authoring guidance update.
No open issues 🎉
What changed in this PR
Adds general overlay-authoring guidance to help Azure Linux customizations tolerate upstream changes without prescribing a specific matching technique.
Changes:
- Minimize dependence on unrelated source content and formatting.
- Retain enough context to target changes unambiguously.
| File | Description |
|---|---|
.github/copilot-instructions.md |
Adds a repository hygiene rule for resilient, precisely targeted overlays. |
Review effort: Balanced
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/azp run |
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Azure Pipelines: 2 pipeline(s) were filtered out due to trigger conditions. |
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/azp run |
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Azure Pipelines: 2 pipeline(s) were filtered out due to trigger conditions. |
Christopher Co (christopherco)
approved these changes
Oct 31, 2026
Christopher Co (christopherco)
merged commit Oct 31, 2026
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Tobias Brick (tobiasb-ms)
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October 31, 2026 15:56
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Summary
Add a general overlay-authoring principle to the Copilot instructions: minimize dependence on unrelated source details while retaining enough context to target changes unambiguously. Avoid prescribing token-only matching or another specific technique.
Follows Reuben’s feedback in #19813 (comment) and #19752 (comment).
Validation
pre-commit run --files .github/copilot-instructions.mdpassed (EditorConfig and offline link checks; Python checks skipped as inapplicable).git diff --cached --checkpassed before committing.