build-cran-binaries/local/tests
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feat(local): auto-apply registry patches with a build-env trial-build gate (#124)
Closes the classifier loop (issue #115, step 3): turns the auto-proposable candidates into an actual PR, gated by a real trial build **in our own build-env images**.

Chosen model (from the design discussion): **autonomous PR**, **PR-first with a CI trial-build gate**, **bounded top-N batch** per run.

## Creating the patch PR

- `propose-patches.R` gains:
  - `--limit N` -- act on the top-N candidates by failure volume; the rest defer to the next run (logged).
  - `--open-pr` -- write the entries onto the reused `auto/registry-patch-proposals` branch, push (with `REPO_RW_TOKEN`), and open/update **one** PR via the Forgejo API (so re-runs update the same PR instead of piling up).
- `.crow/auto-apply-patches.yaml` -- a single job that runs `--open-pr --limit` on a cron/manual trigger. Needs `FORGEJO_TOKEN` + a write-scoped `REPO_RW_TOKEN`.

Novel source diffs and unknown signatures are still never proposed; nothing merges.

## The merge gate (our build-env images)

- `.crow/trial-build-registry.yaml` -- matrixed over the real `OS/IMG` build-env matrix (alpine:3.24, redhat:8/9/10, ubuntu:jammy/noble/**resolute** for ubuntu-2604). Each platform runs `local/trial-build-registry.R`, which diffs the branch registry against `main` and trial-builds **only the entries the branch adds** that apply to that platform, inside `reg.devxy.io/rpkgs/build-env-*`. Green only if every new entry builds; a platform with no new entries is a fast no-op. Nothing is uploaded/archived/recorded.
- The base-registry read **fails loud** if it can't read `registry.json` at `main`, rather than silently treating the base as empty and trial-building the whole registry.

## Notes / follow-up

- The repo uses **no `pull_request` triggers**, so the gate runs manually or on a cron against the branch (`--var patch_branch=...`). Wiring it to fire automatically on the PR needs `event: pull_request` enabled on the Forgejo webhook -- a one-line addition once that's on.
- Two new crons to register in the crow UI: `auto-apply-patches` and `trial-build-registry`. New secret needed: `REPO_RW_TOKEN` (write scope) for the push.

## Verification

- New pure helpers `entry_applies_to_os()` / `new_registry_packages()` covered by tests (platform codename/family/wildcard matching; added-vs-unchanged entry detection; per-platform filtering).
- `--limit` smoke (stubbed DB): top-2 by volume proposed, 3 deferred, candidate registry validates.
- Full suite: 105 tests pass; all pre-commit hooks pass (air, prettier, markdownlint, yamllint, validate-patches).

Reviewed-on: #124
2026-07-15 08:28:15 +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 fix(local): stop proposing per-dependent patches for dependency-cascade failures (#121) 2026-07-14 18:40:41 +00:00
test-proposal-tracking-lib.R feat(local): auto-apply registry patches with a build-env trial-build gate (#124) 2026-07-15 08:28:15 +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