chore: update UKCI kernels

[kxxt]

Automated UKCI kernel update

Summary by CodeRabbit

• Chores
  • Removed support for building and testing Linux kernel v7.2-rc7 in UKCI.

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Project	Deployment	Actions	Updated (UTC)
tracexec	Building	Preview	Aug 17, 2026 8:04am

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yml

Review profile: CHILL

Plan: Pro Plus

Run ID: 11be8e8c-4732-467a-8343-898b5b4c0989

📥 Commits

Reviewing files that changed from the base of the PR and between 63cc7f3 and 09d6ca1.

📒 Files selected for processing (1)

• nix/ukci.nix

💤 Files with no reviewable changes (1)

• nix/ukci.nix

Included review availability: Your plan includes up to 2 reviews per rolling hour; 1 remains after this review.

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Walkthrough

The UKCI kernel matrix no longer defines or builds the Linux kernel v7.2-rc7 source.

Changes

UKCI kernel matrix

Layer / File(s)	Summary
Remove v7.2-rc7 matrix entry nix/ukci.nix	The Linux kernel v7.2-rc7 source, checksum, and build settings were removed from sourcesFor.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to 09d6c

This is a localized automated UKCI kernel configuration update with no identified correctness, security, availability, or deployment impact; it is merge-ready after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies an update to the UKCI kernel set, matching the removal of the v7.2-rc7 kernel entry.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch automation/update-ukci-kernels

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[greptile-apps]

Greptile Summary

This automated maintenance change removes the obsolete Linux 7.2-rc7 entry from the UKCI kernel matrix after the mainline release transitioned out of release-candidate status.

• Stops building and testing the 7.2-rc7 kernel on non-RISC-V targets.
• Leaves the existing stable and LTS kernel entries unchanged.

Confidence Score: 5/5

The PR appears safe to merge because it only removes obsolete release-candidate coverage according to the existing UKCI update policy.

The removed entry is intentionally retired when mainline is no longer an RC, and no repository contract or required workflow behavior depends on retaining that kernel entry.

Important Files Changed

Filename	Overview
nix/ukci.nix	Removes the obsolete 7.2-rc7 UKCI source entry consistently with the repository's automated kernel-update policy; no actionable defect was identified.

_{Reviews (1): Last reviewed commit: "chore: update UKCI kernels" | Re-trigger Greptile}