writeonce/docs/stories/language-runtime-database/15-deps-package-manager.md
shoney.arickathil e48b175472 docs: iteration 15 closeout (Task 5)
- error catalog: WO-E106 (dependency fetch/shape failures, one code, message
  names dep + step) and WO-E107 (dep/local module-name collision) rows.
- README: a Dependencies subsection under the manifest docs — [deps] syntax,
  .wo-deps/wo.lock behavior, offline-when-locked, --update-deps, flat-only.
- board: iteration 15 row -> landed (deps-accept 8/0), pending row removed;
  story 15 header records the landing; 08-project-structure notes
  .wo-deps (gitignored) + wo.lock (committed); plan checkboxes all ticked.

(One self-inflicted casualty during this task, restored from git before
commit: a buggy doc-edit script truncated 08-project-structure.md; the file
was recovered intact and the intended one-liner applied by hand.)

Gates at closeout: deps-accept 8/0, woc-test 540/0, oop-e2e 87/0,
log-watcher 7/0, employee 8/0.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 19:23:18 +02:00

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2.9 KiB
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# Iteration 15 — dependencies: `wo.toml [deps]`, git fetch, `wo.lock`
> Format: fiberloom `product/story-iteration-template`. Part of
> [Story — one language, one runtime, one database, one binary](00-story.md).
>
> **Inserted 2026-08-18. LANDED the same day** (branch `web-framework`): all
> acceptance criteria met — `just deps-accept` 8/0 (cold fetch + lock, use
> <dep> and <dep>/sub, offline-when-locked with the remote deleted,
> lock-beats-moved-tag, --update-deps, drift/transitive/collision
> diagnostics WO-E106/E107, dep `fn main` never the entry, manifest shape).
> The enabler for code shared between writeonce repositories — the web
> framework (iteration 16) is the driving consumer.
>
> **Spec exists:** [`2026-08-18-web-framework-design.md`](../../superpowers/specs/2026-08-18-web-framework-design.md)
> section A is normative for this iteration. **Plan:**
> [`2026-08-18-deps-package-manager.md`](../../superpowers/plans/2026-08-18-deps-package-manager.md)
> (5 tasks: manifest inline-table + [deps]; resolver fetch/cache/lock;
> multi-root discovery + module mapping + entry restriction; the
> `just deps-accept` gate over file:// remotes; docs closeout).
## Goals
- A project declares exact-rev git dependencies in `wo.toml [deps]`
(`name = { git = "...", rev = "..." }`); `woc` fetches them (via the `git`
binary — no network code in the compiler) into `.wo-deps/<name>/` and
resolves `use <name>` / `use <name>/sub` into the dep's module tree.
- `wo.lock` pins resolved SHAs: builds are reproducible, a moved tag is
reported rather than silently followed, and a lock-satisfied build never
touches the network.
- Honest edges: transitive `[deps]` refused with a diagnostic (flat-only v1),
dep/local module-name collisions diagnosed, a dep's `fn main` ignored,
`pub` applies across the boundary exactly as across modules.
## Acceptance Criteria
- **Given** an app whose `[deps]` names a framework in a local `file://` git
repo, **when** `woc <app>` runs twice, **then** the first run fetches +
writes `wo.lock`, the second builds offline from `.wo-deps`, and the built
binary runs.
- **Given** the dep's tag moved after `wo.lock` was written, **when** the app
builds, **then** the lock wins and the drift is reported;
`woc --update-deps` refreshes it.
- **Given** a dep whose own `wo.toml` has `[deps]`, or a dep name colliding
with a local module, **when** the app builds, **then** each is a named
diagnostic, never silent misresolution.
## Out Of Scope
Registries, version ranges/semver solving, transitive dependencies (the
successor's first fork), private-remote auth handling beyond what ambient
`git` config provides, vendoring commands.
## Proposed Solution
Manifest parsing extends `compiler/bin/main.ml`'s existing wo.toml reader;
fetch = `Sys.command` over the `git` binary; resolution plugs the dep root
into the existing directory-as-module discovery. Fixtures under `tests/` use
local `file://` remotes so the suite stays network-free.