chore: update UKCI kernels

[kxxt]

Automated UKCI kernel update

Summary by CodeRabbit

• Chores
  • Updated the Linux kernel versions used for UKCI builds and tests to newer patch and release-candidate releases.

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Project	Deployment	Actions	Updated (UTC)
tracexec	Ready	Preview, Comment	Jul 6, 2026 11:46am

[gemini-code-assist]

Code Review

This pull request updates several Linux kernel versions (6.1lts, 6.6lts, 6.12lts, 6.18lts, 7.1, and 7.2) along with their corresponding sha256 hashes in nix/ukci.nix. I have no feedback to provide as there are no review comments.

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[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

Run ID: 89f3171c-faf9-4d4e-9c68-d3553285b22b

📥 Commits

Reviewing files that changed from the base of the PR and between 9dd4d82 and 875d233.

📒 Files selected for processing (1)

• nix/ukci.nix

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Walkthrough

This PR updates kernel source metadata in nix/ukci.nix, bumping tag/version and sha256 values for the 6.1, 6.6, 6.12, and 6.18 LTS kernel entries, as well as the 7.1 and 7.2 release candidate entries, for the !isTargetRiscv64 path.

Changes

Kernel source version bumps

Layer / File(s)	Summary
LTS kernel version bumps nix/ukci.nix	Updated tag and sha256 for 6.1lts (6.1.176→6.1.177), 6.6lts (6.6.143→6.6.144), 6.12lts (6.12.94→6.12.95), and 6.18lts (6.18.37→6.18.38) source entries.
Release candidate version bumps nix/ukci.nix	Updated tag/version and sha256 for 7.1 (7.1.2→7.1.3) and 7.2 (v7.2-rc1/7.2.0-rc1→v7.2-rc2/7.2.0-rc2) source entries.

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

Possibly related PRs

• kxxt/tracexec#271: Also updates nix/ukci.nix kernel source/version entries and sha256 hashes, overlapping on the 6.12 and 6.18 LTS entries and affecting 7.1-related entries.
• kxxt/tracexec#277: Also bumps the same kernel tag/sha256 metadata in nix/ukci.nix for 6.1/6.6/6.12/6.18 and 7.x entries.
• kxxt/tracexec#284: Also updates the same non-riscv64 UKCI kernel source entries, bumping LTS/release-candidate tags and sha256 hashes for overlapping versions, notably 6.18 and 7.x.

🚥 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 summarizes the main change: updating UKCI kernel versions.
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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