How Renovate and GitHub Agentic Workflows Clashed — and the Fix That Worked

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A developer using Renovate, an automated dependency-update tool, discovered a conflict when it updated action SHAs inside compiled GitHub agentic workflow lock files without updating the accompanying inline scripts, causing workflow failures. An initial workaround — a recompile workflow triggered on any change to the lock file — introduced a secondary bug where Renovate's unrelated version pins were silently rolled back. The root cause was that agentic workflow lock files are fully generated artifacts, meaning action pins and inline scripts must stay in sync and cannot be partially updated. The correct fix involved two steps: excluding the generated lock files from Renovate's scope via ignorePaths, and narrowing the recompile trigger to the true source file, actions-lock.json, which gh aw update-actions refreshes. This ensures all compiled artifacts are regenerated consistently whenever the upstream manifest changes, keeping the workflow stable.

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