Files
sow-tools/flake.nix
T
archvillainette a131b25e5b feat(nwsync): emit blobs and per-artifact NSYM, assemble merged manifests (#71)
Builds sow-tools#53. Format spec followed is the resolution comment of sow-platform#94, checked line by line against niv/neverwinter.nim at HEAD (`nwsync.nim`, `compressedbuf.nim`, `nwsync/private/libupdate.nim`).

## What lands

`crucible nwsync emit <artifact> --out DIR` — explodes one `.hak`/`.erf`, or one loose file such as the TLK, into NWSync blobs plus a NSYM v3 manifest covering only that artifact, with the same `.json` sidecar upstream writes. Blob path `data/sha1/<h0h1>/<h2h3>/<sha1>`, body in NWCompressedBuffer framing (magic `NSYC`, version 3, algorithm 2, uncompressed size, zstd header version 1, dictionary 0, raw zstd frame). The sha1 that names a blob is over the uncompressed bytes.

`crucible nwsync assemble --order NAMES --entries DIR --out DIR [--group-id N]` — merges the per-artifact manifests into one, reading no bulk data at all. Merge rule is resref shadowing, not concatenation: a resref in more than one artifact resolves to the earliest artifact in `--order`, which is how the game resolves it. `--group-id` stays caller-supplied (1 current, 2 testing; 0 is absent, matching upstream omitting a zero integer meta field).

Rules taken from upstream and not re-invented: `nss`/`ndb`/`gic` always skipped; an unresolvable restype is a hard error, not a skip; a resource over 15 MB fails closed; no `latest` file and no `.origin` file, ever. A `.mod` is refused outright — a persistent world publishes no module contents, so the module contributes no bytes.

## Two deliberate departures

- **Emitter version is its own field, not the build revision.** `emitter_version` is a constant bumped only when emitted bytes change. Keying the refuse-to-merge check on `created_with` would invalidate every published index on every unrelated crucible commit and force a re-emit of the whole 15 GB corpus — the opposite of "nothing downstream ever needs the hak again".
- **`SOURCE_DATE_EPOCH` pins the sidecar timestamp.** The manifest itself was already deterministic; the sidecar's `created` was not, against the determinism rule in `docs/consumer-contract.md`.

## Not in this PR, and why

- **Direct upload.** Only the local `--out` sink exists, which is the conformance path. The upload sink and the mid-hak-failure question are sow-tools#60, and the consumer wiring is #65.
- **The conformance run against upstream.** sow-tools#59 owns getting `nwn_nwsync_write` running and capturing reference output. The format here was read from upstream source rather than from its output, so the byte-for-byte manifest comparison and the after-decompression blob comparison still have to happen — that is what #59 is for. The tests in this PR check the layout against the spec, so a shared misreading would pass them.
- **The `artifacts/haks/sha256/<a>/<b>/<sha256>.nsym` location.** emit writes `<out>/<name>.nsym`; where a publisher puts it is the publisher's business (#65).
- **The acceptance gate** — a real client syncing from an assembled manifest — is unchanged and still open.

## Checks

`make check` green (vet, unit tests, shellcheck, yamllint, workflow contract), `make smoke` green with the new builder, `nix build .#crucible` produces `crucible-nwsync`.

🤖 Generated with [Claude Code](https://claude.com/claude-code)Reviewed-on: #71

Co-authored-by: vickydotbat <vickydotbat@tutamail.com>
2026-07-29 10:50:05 +00:00

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3.0 KiB
Nix

{
description = "sow-tools / Crucible — NWN build/conversion/sync toolchain (self-contained Go devshell)";
inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
outputs = { self, nixpkgs }:
let
systems = [ "x86_64-linux" "aarch64-linux" ];
forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f nixpkgs.legacyPackages.${system});
in
{
# Self-contained (D8): a host with ONLY nix can enter this shell and run
# `make check`.
# Daemonless image build (D8): `nix build .#image` produces an OCI tarball
# with no docker/podman daemon. CI loads/pushes it with skopeo. This is the
# Nix-native replacement for `docker build` on the host-mode runner, which
# has no container runtime.
packages = forAllSystems (pkgs:
let
version = self.shortRev or self.dirtyShortRev or "unknown";
crucible = pkgs.buildGoModule {
pname = "crucible";
inherit version;
src = ./.;
vendorHash = "sha256-0I8j7On9YGD2GK9xbj/KkgBrlkMJ6Y6XQv+KCLTgBBU=";
subPackages = [
"cmd/crucible"
"cmd/crucible-depot"
"cmd/crucible-hak"
"cmd/crucible-module"
"cmd/crucible-nwsync"
"cmd/crucible-topdata"
"cmd/crucible-wiki"
];
env.CGO_ENABLED = 0;
ldflags = [
"-s"
"-w"
"-X git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/buildinfo.Version=${version}"
];
# Unit tests run in the `test` workflow / `make check`, not here.
doCheck = false;
};
in
{
inherit crucible;
default = crucible;
image = pkgs.dockerTools.buildLayeredImage {
name = "registry.westgate.pw/deployment/crucible";
tag = version;
contents = [ crucible pkgs.cacert pkgs.fakeNss ];
config = {
Entrypoint = [ "/bin/crucible" ];
Cmd = [ "help" ];
User = "65532:65532";
Env = [
"PATH=/bin"
"SSL_CERT_FILE=/etc/ssl/certs/ca-bundle.crt"
];
};
};
});
devShells = forAllSystems (pkgs: {
default = pkgs.mkShell {
name = "sow-tools";
packages = with pkgs; [
go
gopls
gotools
git
tea
gnumake
bashInteractive
shellcheck
yamllint
jq
];
shellHook = ''
export GOCACHE="$PWD/.cache/go-build"
echo "sow-tools / Crucible devshell (self-contained). $(go version 2>/dev/null)"
echo " make check go vet + go test + shellcheck + yamllint"
echo " make build build every cmd/* into ./bin"
echo " make smoke build + run the binary smoke test"
'';
};
});
};
}