python-websockets: FTBFS building against python 3.15
Maximiliano Curia <[email protected]>
| Newsgroups | gmane.linux.debian.devel.python |
|---|---|
| Message-ID | <[email protected]> |
Package: src:python-websockets Version: 16.0-1 User: [email protected] Usertags: python3.15 Tags: patch Hi! While rebuilding the python related packages against the python version 3.15rc1 we found that python-websocket fails to build from source [1]. This is due to a change in 3.15 in the requirements on how the buffers need to be present in memory. Upstream already applied a fix for this included in the release 16.1. I'm attaching the upstream patch that I'm using the sandbox, please consider either adding this patch or updating the version. Happy hacking, [1]: https://debusine.debian.net/debian/r-python-python3.15/work-request/999586/ -- "Can you imagine what I would do if I could do all I can?" -- Sun Tzu Saludos /\/\ /\ >< `/
py315_requires_c-contiguous_buffers_for_int_from_bytes.patch
(text/x-diff, 1.2 KB)
commit f3bf8033276aa4fc272940e650c319c517bb3479 Author: Lumir Balhar <[email protected]> Date: Tue Apr 7 09:16:08 2026 +0200 Python 3.15+ requires C-contiguous buffers for int.from_bytes() diff --git a/src/websockets/utils.py b/src/websockets/utils.py index b2a90e52..84904ea0 100644 --- a/src/websockets/utils.py +++ b/src/websockets/utils.py @@ -47,6 +47,14 @@ def apply_mask(data: BytesLike, mask: bytes | bytearray) -> bytes: if len(mask) != 4: raise ValueError("mask must contain 4 bytes") + # Python 3.15+ requires C-contiguous buffers for int.from_bytes() + # CPython (https://github.com/python/cpython/pull/132109) optimized + # int.from_bytes() to use the buffer protocol with PyBUF_SIMPLE, which requires + # C-contiguous buffers. Non-contiguous memoryviews (e.g., created by [::-1]) + # now raise BufferError. Convert to bytes to create a contiguous copy. + if isinstance(data, memoryview) and not data.c_contiguous: + data = bytes(data) + data_int = int.from_bytes(data, sys.byteorder) mask_repeated = mask * (len(data) // 4) + mask[: len(data) % 4] mask_int = int.from_bytes(mask_repeated, sys.byteorder)