build-cran-binaries/local
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fix(build): strip the s3 scheme so per-minor objects reach their pass (#192)
## Why

#191 gave the existence cache a per-minor view of the slot, but the paths it filters never carried a minor prefix, so the fix could not take effect.

`s3fs::s3_dir_ls()` returns keys with the `s3://` scheme attached:

```
s3://devxy-rpkgs-binaries/amd64/resolute/latest/src/contrib/4.4/oeli_0.7.6.tar.gz
```

The contrib prefix was stripped as a *fixed substring*, so it was removed from the middle of the key and the scheme survived:

```
s3://4.4/oeli_0.7.6.tar.gz
```

That leading `s3://` defeats both `^<minor>/` and `^[0-9]+\.[0-9]+/`, so all 21212 per-minor objects on amd64/resolute were classified as flat-slot objects. Pipeline 12011 shows it exactly:

```
sensitive pass:      0 files (0      of 119053 objects apply to this pass)
primary pass:   119053 files (119053 of 119053 objects apply to this pass)
```

Each sensitive pass therefore ran with an empty cache and recompiled all 10248 sensitive packages it already had.

## What changed

- `local/packages-to-build.R`: anchor the contrib prefix and swallow an optional `s3://` with it.
- `local/packages-to-build.R`: abort when the strip leaves fewer per-minor paths than the listing held. The failure mode is silent and only surfaces as a multi-hour rebuild, and both counts derive from the same listing so they must agree exactly.
- `local/packages-to-build.R` / `local/build-all.R`: mark the cache with a `slot_relative` attribute and read that, instead of sniffing for a `/`. A slot-relative cache for a slot with no per-minor or Archive object holds bare names too, and would have been misread as legacy and used unfiltered, which makes a per-minor pass believe the flat slot's binaries are its own and build nothing.
- `scripts/purge_cdn_zone.sh`: indent the jq continuation lines by a multiple of two. This is unrelated, but it fails editorconfig-checker on `main` and blocks `prek run -a` for everyone. jq ignores the whitespace, and both response shapes still resolve.

## Verification

Replaying the real key shapes through the old and new code:

```
            sensitive(4.6)  primary
OLD paths:  0               8        <- reproduces production
NEW paths:  3               3

Invariant NEW: listing=4 stripped=4 -> PASS
Invariant OLD: listing=4 stripped=0 -> ABORT (would have caught this)
```

Per-minor `Archive/` objects are attributed to their minor, and the flat bucket keeps its own `Archive/`.

`prek run -a` passes.

Pipelines 12011-12015 were stopped rather than left to spend hours recompiling what they already had. Their uploads are not lost, so a fresh run inherits them.

Reviewed-on: #192
2026-09-02 07:11:10 +00:00
..
patches fix(patches): support RcppParallel 6.2.1 2026-08-30 14:26:37 +00:00
tests feat(rebuild): shard the weekly rebuild and make each shard resumable (#163) 2026-08-12 08:30:29 +00:00
archive-missed-pkgs.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
build-all.R fix(build): strip the s3 scheme so per-minor objects reach their pass (#192) 2026-09-02 07:11:10 +00:00
build-one.R feat: patch registry + wiring for per-package patching (#103) 2026-06-30 08:50:19 +00:00
check-cdn-cache.sh add alpine321 to scripts 2024-12-29 10:18:55 +01:00
check-NA.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
debug-packages-writing.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
dedupe-audit-issue.R fix(audit): replace arch subsection in place instead of appending duplicates (#138) 2026-07-21 08:51:23 +00:00
detect-duplicates.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
excluded-packages.json feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
failing-builds-classify.R feat(local): aggregate blocked-on-dependency reporting by dependency (#131) 2026-07-16 21:24:03 +00:00
failing-builds-report.R feat(local): detect dependency-cascade failures generally, not just RcppParallel (#128) 2026-07-16 08:23:54 +00:00
fetch-rebuild-packages-from-issue.R fix(audit): replace arch subsection in place instead of appending duplicates (#138) 2026-07-21 08:51:23 +00:00
find-R-api-packages.sh chore(local): add S3 migration and CRAN-source helper scripts 2026-06-14 13:02:48 +02:00
install-bincraft.R refactor: migrate package installation from pak to uvr (#147) 2026-07-31 12:19:26 +00:00
label-removed-cran-packages.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
last-processed-by-platform.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
migrate-s3-hetzner-to-backblaze.sh chore(local): add S3 migration and CRAN-source helper scripts 2026-06-14 13:02:48 +02:00
missing-cran-packages-db.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
missing-cran-packages.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
missing-packages-in-index.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
packages-to-build.R fix(build): strip the s3 scheme so per-minor objects reach their pass (#192) 2026-09-02 07:11:10 +00:00
packages-without-any-binary.R feat: R-minor-sensitive binary builds (full + iterative) (#84) 2026-06-14 08:04:40 +00:00
proposal-tracking-lib.R feat(local): aggregate blocked-on-dependency reporting by dependency (#131) 2026-07-16 21:24:03 +00:00
proposal-tracking.R feat(local): aggregate blocked-on-dependency reporting by dependency (#131) 2026-07-16 21:24:03 +00:00
propose-patches.R feat(local): aggregate blocked-on-dependency reporting by dependency (#131) 2026-07-16 21:24:03 +00:00
query-pkgs-without-old-versions.R chore(local): add S3 migration and CRAN-source helper scripts 2026-06-14 13:02:48 +02:00
r-minor-helpers.R refactor: migrate package installation from pak to uvr (#147) 2026-07-31 12:19:26 +00:00
rebuild-missing-helpers.R feat(rebuild): shard the weekly rebuild and make each shard resumable (#163) 2026-08-12 08:30:29 +00:00
rebuild-missing.R feat(rebuild): shard the weekly rebuild and make each shard resumable (#163) 2026-08-12 08:30:29 +00:00
repair-built-stamp.R fix(index): add a slot repair for a broken Built stamp and retire alpine 3.21 (#150) 2026-08-07 09:15:04 +00:00
test-package-loading.R refactor: migrate package installation from pak to uvr (#147) 2026-07-31 12:19:26 +00:00
trial-build-patch.R fix(local): make trial-build-patch.R detect non-throwing build failures (#134) 2026-07-18 08:37:04 +00:00
trial-build-registry.R fix(local): make the trial-build gate detect non-throwing build failures (#130) 2026-07-16 08:24:03 +00:00
uvr-install.sh fix(rebuild): harden split workflow setup (#164) 2026-08-13 13:38:28 +00:00
validate-patches.R feat(local): auto-propose registry patches and track the feedback loop (#117) 2026-07-14 15:03:24 +00:00
weekly-missing-binaries-audit.R fix(audit): count a source fallback as a missing binary (#157) 2026-08-09 10:37:41 +00:00