nanonyme commented on code in PR #1793:
URL: https://github.com/apache/buildstream/pull/1793#discussion_r1054176616
##########
src/buildstream/utils.py:
##########
@@ -359,6 +359,18 @@ def sha256sum(filename: str) -> str:
return h.hexdigest()
+try:
+ os.copy_file_range # type: ignore[attr-defined] Requires Python 3.8 or
newer
+except AttributeError:
+ _copy_file = lambda src, dest: shutil.copyfile(src, dest)
+else:
+ def _copy_file(src, dest):
+ with open(src, "rb") as src_file, open(dest, "wb") as dest_file:
+ num_bytes = os.fstat(src_file.fileno()).st_size
+ while num_bytes > 0:
+ num_bytes -= os.copy_file_range(src_file.fileno(),
dest_file.fileno(), num_bytes)
Review Comment:
I see. So we would need to wrap always, then fallback in the wrapper.
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