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deepseek-harness/docs/rfc/proposed/process/2026-06-11-supply-chain-and-vendor-drift.md
T
Tianyi Cui e6fad266a6 docs(rfc): define and enforce a uniform RFC format; adopt it across the corpus
Define the in-file RFC contract in docs/rfc/README.md § The file format:
the header block (`# RFC: <title>` plus a dateless Status enum
cross-checked against the lifecycle folder), the per-lifecycle body
skeleton (a Problem opener everywhere; Proposal/Alternatives considered/
Acceptance criteria/Risks in proposed/; present-tense Decision/
Consequences with proposal-era headings banned in implemented/; the
frozen proposal shape in rejected/), and a mandatory Alternatives
considered section with a date-fenced grandfather comment for pre-format
RFCs whose alternatives are not reconstructible from the record.

Enforce it with a new doc-sync gate, scripts/verify-rfc-format.ts, and
normalize all 112 RFCs to it: ~15 Status-line spellings collapse to the
enum, 29 Context openers become Problem, the 39 legacy-format XXX debt
markers are resolved and banned from reappearing, proposal-era sections
in implemented RFCs are rewritten to shipped reality (including the
web/fs/subagent seam RFCs' migration plans and test checklists, closing
the doc-tiers deferred-work item on the web seam), every RFC gains an
Alternatives considered section or the grandfather comment, and the
bilingual pair is re-mirrored and re-recorded.

Move the generated index tables out of README.md into a fully generated
docs/rfc/INDEX.md — gen-rfc-index now writes the whole file, and
verify-rfc-classification checks its freshness and rejects index-shaped
rows in the curated README — which makes room for the format contract to
live in the README front door instead of a separate FORMAT.md.

The decision record, and the first RFC written in the new format, is
docs/rfc/implemented/process/2026-07-05-uniform-rfc-format.md.
2026-07-05 22:58:25 +08:00

2.7 KiB

RFC: Supply chain checks and vendor drift verification

Status: proposed

Problem

The vendor manifest (the vendoring decision) is enforced at commit time in the forward direction (vendored change ⇒ manifest update) but nothing verifies the manifest's claims: that vendor/ actually equals upstream-at-SHA plus exactly the logged modifications. And the handful of true npm dependencies have no advisory monitoring or update cadence.

Proposal

  1. Vendor drift check (nightly CI): clone the upstream repos at the manifest SHAs (shallow), copy the corresponding package sources, and diff against vendor/*/src. The job fails unless the diff matches the logged local modifications (kept as a checked-in patch file per modification — the log entries become verifiable artifacts rather than prose).
  2. Dependency advisories: osv-scanner (or pnpm audit) job on the lockfile, scheduled + on lockfile-touching PRs.
  3. License inventory: a script asserting every vendored package carries its LICENSE and that package.json license fields match the inventory in vendor/README.md (we mix vendored MIT with our BSD-3) — CI step.
  4. Renovate (or a scheduled agent task) proposing npm dependency updates in small PRs that ride the full gate suite; vendored packages are excluded (their updates follow the manifest sync procedure, ideally as a semi-automated agent workflow: fetch upstream, re-apply patches, run gates, open PR with the manifest table updated).

Plan

3 is trivial — do first. 1 requires network access from CI to the upstream repos (private — needs a token) and converting the two existing logged modifications into patch files. 2 and 4 are config.

Alternatives considered

  • pnpm audit instead of osv-scanner — either satisfies the advisory-scanning shape; the choice is deferred to implementation.
  • A scheduled agent task instead of Renovate — equivalent for proposing small update PRs that ride the full gate suite; vendored packages stay excluded either way (their updates follow the manifest sync procedure).

Acceptance criteria

  • The license inventory script runs in CI and fails on a missing LICENSE or a license field that contradicts the inventory in vendor/README.md.
  • The nightly drift job reconstructs vendor/ from the manifest SHAs plus checked-in patch files and fails on any unexplained diff.
  • Advisory scanning runs on the lockfile on schedule and on lockfile-touching PRs.

Risks

Upstream repos are private mirrors; CI credentials and availability are the main friction for the drift check. If blocked, run it as a local scheduled agent task instead of CI.