chore: update UKCI kernels

[kxxt]

Automated UKCI kernel update

Summary by CodeRabbit

• Updates
  • Updated Linux 6.18 LTS to 6.18.54, Linux 7.2 to 7.2.8, and the 7.3 release candidate to rc5.
  • Linux 7.2 and 7.3 remain unavailable for riscv64 targets.

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Project	Deployment	Actions	Updated
tracexec	Ready	Preview	Sep 28, 2026 3:39pm UTC

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository: kxxt/tracexec/.coderabbit.yml

Review profile: CHILL

Plan: Advanced

Run ID: 3ebeaeda-1f7a-42d9-a351-13b8cb13c89a

📥 Commits

Reviewing files that changed from the base of the PR and between 36b3b2e and d27cfc5.

📒 Files selected for processing (1)

• nix/ukci.nix

Included review availability: This review used your included allowance. Your plan provides up to 2 included reviews per hour; 1 remain after this review.

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Walkthrough

The Nix configuration advances the Linux 6.18, 7.2, and 7.3 source entries to newer versions and updates their source hashes. The riscv64 exclusions for Linux 7.2 and 7.3 remain unchanged.

Changes

Linux source version updates

Layer / File(s)	Summary
Update Linux source versions nix/ukci.nix	The 6.18 entry advances from 6.18.53 to 6.18.54. The 7.2 entry advances from 7.2.7 to 7.2.8, and the 7.3 release candidate advances from rc4 to rc5. Each entry uses an updated hash. The 7.2 and 7.3 entries remain excluded for riscv64 targets.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~3 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to d27cf

The updated Linux source pins resolve to the intended artifacts and their checksums match; no merge-blocking fetch issue is indicated.

Architecture Summary

Architecture risk: 🔵 Low · up to d27cf

The change affects 1 system.

Changed systems: nix

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — nix (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in nix/ukci.nix: The Linux 6.18 LTS source entry advances from tag 6.18.53 to 6.18.54 and uses the corresponding updated SHA-256.
• observed — Modified behavior in nix/ukci.nix: For non-riscv64 targets, the Linux 7.2 entry advances from version and tag 7.2.7 to 7.2.8 and uses the corresponding updated SHA-256.
• observed — Modified behavior in nix/ukci.nix: For non-riscv64 targets, the Linux 7.3 entry advances from v7.3-rc4 / 7.3.0-rc4 to v7.3-rc5 / 7.3.0-rc5 and uses the corresponding updated SHA-256.

🚥 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 and concisely describes the main change: updating the UKCI kernel versions and source hashes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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 💡 1

🧪 Generate unit tests (beta)

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• Create a new PR

🛠️ Fix failing CI checks 💡

• Commit to this branch
• Create a new PR

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[greptile-apps]

Confidence Score: 5/5

[Medium risk] Updates Linux kernel versions and checksums.

The PR appears safe to merge based on the reviewed changes.

Summary

Updates the pinned UKCI kernel sources and hashes for Linux 6.18 LTS, 7.2, and 7.3-rc5.

_{Reviews (1) · Last reviewed commit: "chore: update UKCI kernels"}