just-dna-format 0.2.0

Declarative schema + integrity contract for just-dna annotation modules (DSL spec, manifest, digests)

just-dna-module

The declarative manifest contract and integrity primitives for just-dna annotation modules. Dependency-light (Pydantic + stdlib only) so it can be shared as the single source of truth by both:

• just-dna-pipelines — emits manifest.json when it compiles a module, and
• just-dna-marketplace — indexes, serves, and verifies those manifests.

Keeping the contract in one small package prevents the two sides from drifting.

What's here

Module	Contents
just_dna_format.manifest	ModuleManifest + sub-models (Identity, Display, Stats, Compilation, FileEntry, Artifact); read_manifest / write_manifest. Mirrors the marketplace SPEC §4.
just_dna_format.integrity	sha256_file, artifact_digest (canonical Merkle root), build_artifact, verify_manifest (verify-then-install), IntegrityError. SPEC §5.
just_dna_format.identity	Name/namespace rules, canonical_id, SemVer Version + parse_version, version_from_legacy (vN → N.0.0), latest. SPEC §6.

Usage

from just_dna_format.manifest import ModuleManifest, read_manifest
from just_dna_format.integrity import build_artifact, verify_manifest

# Compiler side: hash outputs and record the digest.
artifact = build_artifact(output_dir, ["weights.parquet", "annotations.parquet", "studies.parquet"])

# Downloader side: verify before installing (raises IntegrityError on any mismatch).
verify_manifest(module_dir, read_manifest(module_dir / "manifest.json"))

All hashes are SHA-256, lowercase hex, prefixed sha256:. The artifact.digest is a Merkle-style root over the canonical file listing — verifying it verifies the whole set and is the version's immutable content identity.

Develop

uv sync
uv run pytest -vvv