Surface apt's Failure Diagnostics in upgradable_count() - #1009
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A failed "apt list --upgradable" previously reported only its exit code, discarding stderr that would show why: an expired repository key, a network failure, an apt lock conflict. Captures stderr to a file under the script's existing TMP_DIR and includes a bounded (200-char) excerpt in the "unknown" status line. CodeRabbit finding from PR #1008's promotion review.
PR Summary by QodoSurface apt Failure Diagnostics in Upgrade Status
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Organization UI Review profile: ASSERTIVE Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 1 remains after this review. 📝 WalkthroughWalkthroughThe host upgrade script now captures normalized APT diagnostics when ChangesAPT diagnostic reporting
Estimated code review effort: 1 (Trivial) | ~5 minutes Merge Risk: 🔵 Low · up to The change improves failure diagnostics, but complete APT error output is written to temporary storage before the displayed excerpt is limited, so unusually large failures could consume temporary space. The PR is mergeable with explicit owner awareness or follow-up to bound capture during writing. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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✨ Finishing Touches 💡 1📝 Generate docstrings 💡
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upgradable_count() is called as $(upgradable_count), a command substitution the script's own set -e does not reach into without shopt -s inherit_errexit, which is not set here. A failed mktemp previously left err_file empty and execution continued into an invalid redirect, misreporting a temp-storage failure as an apt failure with no diagnostic. Now checked explicitly and reported as its own unknown case. qodo finding from PR #1009's own review.
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Inline comments:
In `@host-setup/linux/upgrade-host.sh`:
- Around line 180-187: Update upgradable_count so apt list --upgradable stderr
is consumed through a bounded reader that drains the stream while retaining at
most 200 characters, rather than redirecting the full diagnostic to err_file
before applying cut. Preserve the existing failure status and diagnostic message
behavior, and keep the mktemp failure handling intact.
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host-setup/linux/upgrade-host.sh
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Bounding apt's stderr with a synchronized process substitution is real complexity for a status-line diagnostic. Simpler: only the failure path re-runs the read-only listing, with stdout discarded and stderr bounded by a pipe into head -c 200, entirely in memory. This also removes the prior mktemp-based capture and the failure case it needed to guard against, since there is no temp file left to create. Verified live against CodeRabbit's own 1MB-stderr reproduction: disk usage inside the capture directory is unchanged, output is correctly bounded and the real exit code still surfaces. CodeRabbit finding from PR #1009's own review.
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Follow-up to #954/#1007, surfaced by CodeRabbit on the develop -> main promotion PR #1008.
What
upgrade-host.sh'supgradable_count()discarded stderr on a failedapt list --upgradable, reporting only an exit code. A user couldn't tell an expired repository key, a network failure, or an apt lock conflict apart from any other failure. Captures stderr to a file under the script's existingTMP_DIRand includes a bounded (200-char) excerpt in the "unknown" status line. This only ever backs a status report; nothing downstream mutates on its result.Verified live against a success case and a simulated failure-with-stderr case.
Summary by CodeRabbit