Nightly: reproducible zips and plugin manifest

scripts/zip_deterministic.py

@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+"""Create deterministic zip archives.
+
+Usage:
+  zip_deterministic.py <zip_path> <root_dir>
+
+The archive will include the root directory itself and all files under it.
+"""
+from __future__ import annotations
+
+import os
+import sys
+import time
+import zipfile
+from pathlib import Path
+
+
+def _timestamp() -> tuple[int, int, int, int, int, int]:
+    epoch = os.environ.get("SOURCE_DATE_EPOCH")
+    if epoch:
+        try:
+            value = int(epoch)
+            return time.gmtime(value)[:6]
+        except Exception:
+            pass
+    return (2000, 1, 1, 0, 0, 0)
+
+
+def _iter_files(root: Path):
+    for dirpath, dirnames, filenames in os.walk(root):
+        dirnames[:] = sorted([d for d in dirnames if d != "__pycache__"])
+        for filename in sorted(filenames):
+            if filename.endswith(".pyc"):
+                continue
+            yield Path(dirpath) / filename
+
+
+def _add_file(zf: zipfile.ZipFile, file_path: Path, arcname: str) -> None:
+    info = zipfile.ZipInfo(arcname, date_time=_timestamp())
+    info.compress_type = zipfile.ZIP_DEFLATED
+    info.external_attr = (0o644 & 0xFFFF) << 16
+    with file_path.open("rb") as handle:
+        data = handle.read()
+    zf.writestr(info, data, compress_type=zipfile.ZIP_DEFLATED)
+
+
+def main() -> int:
+    if len(sys.argv) != 3:
+        print("Usage: zip_deterministic.py <zip_path> <root_dir>")
+        return 2
+
+    zip_path = Path(sys.argv[1]).resolve()
+    root = Path(sys.argv[2]).resolve()
+    if not root.exists() or not root.is_dir():
+        print(f"Missing root dir: {root}")
+        return 2
+
+    base = root.parent
+    zip_path.parent.mkdir(parents=True, exist_ok=True)
+    if zip_path.exists():
+        zip_path.unlink()
+
+    with zipfile.ZipFile(zip_path, "w") as zf:
+        for file_path in sorted(_iter_files(root)):
+            arcname = str(file_path.relative_to(base)).replace(os.sep, "/")
+            _add_file(zf, file_path, arcname)
+
+    print(str(zip_path))
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())