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BORG_MSGPACK_VERSION_CHECK=no to disable the version check, fixes #9109

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Thomas Waldmann 2025-10-28 22:39:14 +01:00
parent b712d55de9
commit 2d63dc9a4f
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3 changed files with 18 additions and 2 deletions
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2
docs/changes.rst
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@ -430,6 +430,8 @@ New features:
- create: --files-changed=MODE option (controls how borg detects whether
a file has changed while it is being backed up)
- improved tty-less progress reporting (--progress)
- BORG_MSGPACK_VERSION_CHECK=no to optionally disable the msgpack version
check; default is "yes", use at your own risk, #9109.
Fixes:

5
docs/usage/general/environment.rst.inc
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@ -70,6 +70,11 @@ General:
When set to no (default: yes), system information (like OS, Python version, ...) in
exceptions is not shown.
Please only use for good reasons as it makes issues harder to analyze.
BORG_MSGPACK_VERSION_CHECK
Controls whether Borg checks the ``msgpack`` version.
The default is ``yes`` (strict check). Set to ``no`` to disable the version check and
allow any installed ``msgpack`` version. Use this at your own risk; malfunctioning or
incompatible ``msgpack`` versions may cause subtle bugs or repository data corruption.
BORG_FUSE_IMPL
Choose the lowlevel FUSE implementation borg shall use for ``borg mount``.
This is a comma-separated list of implementation names, they are tried in the

13
src/borg/helpers/msgpack.py
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@ -1,3 +1,5 @@
import os
from .datastruct import StableDict
from ..constants import * # NOQA
@ -136,9 +138,16 @@ def is_slow_msgpack():
def is_supported_msgpack():
# DO NOT CHANGE OR REMOVE! See also requirements and comments in pyproject.toml.
# This function now also respects the env var BORG_MSGPACK_VERSION_CHECK.
# Set BORG_MSGPACK_VERSION_CHECK=no to disable the version check on your own risk.
import msgpack
return (1, 0, 3) <= msgpack.version[:3] <= (1, 1, 2) and \
msgpack.version not in [] # < add bad releases here to deny list
version_check = os.environ.get('BORG_MSGPACK_VERSION_CHECK', 'yes').strip().lower()
return version_check == 'no' or (
(1, 0, 3) <= msgpack.version[:3] <= (1, 1, 2) and
msgpack.version not in []
)
def get_limited_unpacker(kind):