build-cran-binaries/local/tests
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feat(local): classify failing binary builds and pre-fill registry suggestions (#116)
Implements steps 1 + 2 of #115: turn recorded build failures into triaged patch suggestions instead of hand-scraping Crow logs.

## What this adds

A **read-only** reporting pipeline over the `single_builds` metadata table. It never writes to the DB or the registry.

- `local/failing-builds-classify.R` — pure, DB-free helpers:
  - `normalise_error()` strips temp paths, version numbers, hex addresses, and the package name so the same root cause collapses to one fingerprint.
  - `fingerprint_error()` extracts the salient error line and normalises it.
  - `classify_error()` matches against a seed signature set; unmatched errors are never guessed at.
  - `propose_registry_entry()` renders a schema-valid `registry.json` entry.
- `local/failing-builds-report.R` — entrypoint: queries `single_builds WHERE error_occurred = TRUE AND removed = FALSE`, groups by root cause (signature when classified, fingerprint otherwise), classifies each group, and prints a triaged report. Flags: `--platform`, `--arch`, `--min`, `--json`; `PLATFORM`/`ARCH` env fallbacks.
- `local/tests/test-failing-builds-classify.R` — unit tests for the helpers.
- `local/patches/README.md` — documents the workflow.

## Seed signatures

Each rule carries a fix tier, confidence, and an auto/human-only flag:

| Signature | Fix | Disposition |
| --- | --- | --- |
| `tbb/tbb_stddef.h: No such file` | makevars `-DTBB_INTERFACE_NEW` | auto-proposable |
| RcppParallel bundled TBB (musl / new g++) | curated `disable-tbb.patch` | auto-proposable |
| system `libuv.so` link leak | force vendored/static lib | **human triage** (novel source diff) |
| unmatched | none | **human triage** |

## Guardrails honored

- No autonomous novel source diffs: only known env/makevars levers and already-curated package patches are auto-proposable; anything needing a brand-new diff, and any unknown signature, is routed to human triage.
- No DB or registry writes; no change to the public `src/contrib` index.
- Reuses `single_builds.error_text`; no new failure-capture pipeline.

## Verification

- All helper unit tests pass under the Dockerized R 4.5.3 build env.
- Pre-commit hooks pass (`air-format`, `validate-patches`, prettier, etc.).
- Smoke-tested the full report path with a stubbed DB; generated proposals pass the real `local/validate-patches.R`.

Steps 3 (auto-open PRs) and 4 (feedback loop) are intentionally deferred, per the issue's suggestion to validate the signature set first.

Closes #115

Reviewed-on: #116
2026-07-14 14:45:25 +00:00
..
test-build-all-args.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
test-failing-builds-classify.R feat(local): classify failing binary builds and pre-fill registry suggestions (#116) 2026-07-14 14:45:25 +00:00
test-r-minor-helpers.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
test-trim-pkgcache.R fix(ci): bound pkgcache _metadata growth to stop macmini disk-fill (#110) 2026-07-13 09:31:29 +00:00