| from __future__ import annotations
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|
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| import argparse
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| import hashlib
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| import json
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| import shutil
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| from pathlib import Path
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|
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| from huggingface_hub import hf_hub_download
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|
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| def digest(path: Path) -> str:
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| value = hashlib.sha256()
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| with path.open("rb") as stream:
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| while block := stream.read(8 * 1024 * 1024):
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| value.update(block)
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| return value.hexdigest()
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|
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|
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| def main() -> int:
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| parser = argparse.ArgumentParser(description="Download and verify Krea 2 benchmark models")
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| parser.add_argument("--models-dir", type=Path, required=True)
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| parser.add_argument("--manifest", type=Path, default=Path(__file__).resolve().parents[1] / "provenance" / "model_manifest.json")
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| parser.add_argument("--all", action="store_true", help="Download all eight formats plus text encoder and VAE")
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| parser.add_argument("--format", choices=["bf16", "fp8_scaled", "int8_convrot", "mxfp8", "nvfp4", "int4_convrot", "gguf_q8_0", "gguf_q4_k_m"], action="append")
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| parser.add_argument("--accept-krea-license", action="store_true")
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| args = parser.parse_args()
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| if not args.accept_krea_license:
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| parser.error("Review the Krea 2 Community License, then pass --accept-krea-license")
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| selected = set(args.format or [])
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| if not args.all and not selected:
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| parser.error("Choose --all or at least one --format")
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| manifest = json.loads(args.manifest.read_text(encoding="utf-8"))
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| args.models_dir.mkdir(parents=True, exist_ok=True)
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| common = {"qwen3vl_4b_bf16.safetensors", "qwen_image_vae.safetensors"}
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| wanted = common | {item["filename"] for item in manifest["files"] if item.get("format_id") in selected}
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| if args.all:
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| wanted = {item["filename"] for item in manifest["files"]}
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| for item in manifest["files"]:
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| if item["filename"] not in wanted:
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| continue
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| destination = args.models_dir / item["filename"]
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| if destination.exists() and digest(destination) == item["sha256"]:
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| print(f"verified {destination.name}")
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| continue
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| cached = Path(hf_hub_download(repo_id=item["repository"], revision=item["revision"], filename=item["repository_path"]))
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| shutil.copy2(cached, destination)
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| actual = digest(destination)
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| if actual != item["sha256"]:
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| destination.unlink(missing_ok=True)
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| raise RuntimeError(f"SHA-256 mismatch for {item['filename']}: {actual}")
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| print(f"downloaded and verified {destination.name}")
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| return 0
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|
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| if __name__ == "__main__":
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| raise SystemExit(main())
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|
