[jdx]

Summary

• redirect the GNU hello source download from the flaky load-balancing mirror to the canonical GNU archive host in the slow brew source-build e2e test
• retain Homebrew's SHA-256 verification for the downloaded archive

Why

ftpmirror.gnu.org intermittently returns HTTP 502 responses, causing the test to fail before it exercises mise's source-build pipeline. The canonical ftp.gnu.org archive serves the same checksum-verified tarball more reliably.

Validation

• mise run test:e2e test_system_install_brew_source_slow
• mise run lint-fix

AI-assisted — Tool: Codex; model: unavailable/unavailable; version: unavailable.

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Note

Low Risk
Test-only URL rewrite for e2e; no runtime behavior or security-sensitive code paths change.

Overview
The slow brew source-build e2e (test_system_install_brew_source_slow) sets MISE_URL_REPLACEMENTS so GNU hello tarballs are fetched from https://ftp.gnu.org/gnu instead of https://ftpmirror.gnu.org/gnu, which intermittently returns HTTP 502 and fails the test before mise’s source-build path runs.

Inline comments document that Homebrew’s SHA-256 check still applies to the downloaded archive. No production or installer logic changes—only test stability.

^{Reviewed by Cursor Bugbot for commit ff36f21. Bugbot is set up for automated code reviews on this repo. Configure here.}

Summary by CodeRabbit

• Tests
  • Improved the GNU Hello system installation test to use a consistent download source.
  • Preserved checksum verification while ensuring the source-build installation path is exercised reliably.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Central YAML (base), Organization UI (inherited)

Review profile: CHILL

Plan: Pro Plus

Run ID: de3cdc8a-dd40-4051-96b2-f33ed6f84867

📥 Commits

Reviewing files that changed from the base of the PR and between ac9c840 and ff36f21.

📒 Files selected for processing (1)

• e2e/cli/test_system_install_brew_source_slow

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📝 Walkthrough

Walkthrough

The slow GNU hello system-install test now exports MISE_URL_REPLACEMENTS to redirect GNU mirror URLs to ftp.gnu.org, ensuring the source-build download uses the canonical host.

Changes

GNU source installation test

Layer / File(s)	Summary
Canonicalize GNU downloads e2e/cli/test_system_install_brew_source_slow	Adds an exported URL replacement mapping from ftpmirror.gnu.org/gnu to ftp.gnu.org/gnu.

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

Suggested reviewers: benjaminwestern

Poem

A bunny hops past mirrors bright,
And finds GNU’s archive just right.
One URL swap, downloads flow,
Checksums guard the source below.
“Hello!” sings the rabbit light.

🚥 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 describes the main change: making the system install brew source E2E test avoid the flaky GNU mirror.
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.

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[greptile-apps]

Greptile Summary

This PR stabilizes the slow Homebrew source-build end-to-end test.

• Redirects GNU hello downloads from the load-balancing mirror to the canonical GNU archive host.
• Retains Homebrew’s existing SHA-256 verification of the downloaded source archive.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The replacement matches the GNU hello source URL used by the Homebrew source-download path, rewrites it to the intended canonical archive host, and leaves SHA-256 verification intact.

Important Files Changed

Filename	Overview
e2e/cli/test_system_install_brew_source_slow	Adds a correctly formatted URL replacement that is applied to the Homebrew source download while preserving checksum validation.

_{Reviews (1): Last reviewed commit: "test(system): avoid flaky GNU mirror in ..." | Re-trigger Greptile}

[github-actions]

Instruction counts

benchmark	trend	instructions	Δ	wall (min)	Δ
env	▃▂▃▃▂▄▂▂▃▃▂▂▂▁▆▆█▆▇█	84,949,144 → 84,980,344	+0.04%	22.20 → 23.56ms	+6.11%
hook-env	▄▃▄▅▃▄▁▂▂▂▁▂▂▁▇▇█▆▇▇	87,636,085 → 87,607,482	-0.03%	24.36 → 22.34ms	-8.29%
ls	▇▅▇▇▃█▂▅▅▅▄▄▆▁▃▅█▃▅▆	76,725,903 → 76,763,455	+0.05%	19.82 → 19.10ms	-3.66%
registry	▅▄▆▆▅█▂▃▄▃▇▅▄▁▅▆▇▄▆▇	50,251,613 → 50,259,528	+0.02%	13.20 → 14.40ms	+9.11%
startup	▇▄▇▇▆█▅█▅▇▇▆█▁▇▆▆▅▆▆	16,054,451 → 16,053,273	-0.01%	8.67 → 9.66ms	+11.48%

No instruction-count regression above 1%.

_{Only instruction counts gate. Wall clock is shown for context — on identical hardware it moves 4-20% run to run.}

_{Measured by tak — instruction-counted CLI benchmarks, stored in this repository's git notes.}

_{ff36f21395ec vs ac9c84078716 · measured on the runner, not pushed to the history.}