fix: close Walloon terrain provisioning

scripts/provision_spw_terrain_source.py

@@ -32,6 +32,17 @@ def sha256_file(path: Path) -> str:
     return digest.hexdigest()
 
 
+def write_text_atomic(path: Path, content: str, *, encoding: str) -> None:
+    temporary = path.with_suffix(path.suffix + ".part")
+    temporary.unlink(missing_ok=True)
+    try:
+        temporary.write_text(content, encoding=encoding)
+        temporary.replace(path)
+    except Exception:
+        temporary.unlink(missing_ok=True)
+        raise
+
+
 def download(destination: Path) -> str:
     temporary = destination.with_suffix(destination.suffix + ".part")
     temporary.unlink(missing_ok=True)
@@ -202,8 +213,10 @@ def provision(destination: Path, force: bool, keep_archive: bool) -> dict:
             archive.unlink(missing_ok=True)
     validation = validate_raster(target)
     source_digest = sha256_file(target)
-    target.with_suffix(".sha256").write_text(
-        f"{source_digest}  {target.name}\n", encoding="ascii"
+    write_text_atomic(
+        target.with_suffix(".sha256"),
+        f"{source_digest}  {target.name}\n",
+        encoding="ascii",
     )
     validation.update(
         {
@@ -214,7 +227,11 @@ def provision(destination: Path, force: bool, keep_archive: bool) -> dict:
         }
     )
     report_path = destination / "provisioning-report.json"
-    report_path.write_text(json.dumps(validation, indent=2) + "\n", encoding="utf-8")
+    write_text_atomic(
+        report_path,
+        json.dumps(validation, indent=2) + "\n",
+        encoding="utf-8",
+    )
     print(f"SPW MNT: ready ({target.stat().st_size / 1024 / 1024 / 1024:.1f} GiB)")
     print(f"Provisioning report: {report_path}")
     return validation