On 2/20/26 5:22 PM, Andrej Shadura wrote:
Control: reassign -1 src:sentry-python
Hello,
On Fri, 20 Feb 2026, at 17:15, Gena Byers wrote:
On 2/20/26 4:54 PM, Andrej Shadura wrote:
Can you give me more details please?
I don’t see any mentions of this anywhere in the source.
I don't know what the exact mechanism is but installing python3-eventlet
renders matrix-synapse inoperable:
"/usr/lib/python3/dist-packages/sentry_sdk/utils.py", line 1346, in
_get_contextvars
Feb 20 16:59:17 nexus python3[2979902]: if not _is_contextvars_broken():
Feb 20 16:59:17 nexus python3[2979902]: ~~~~~~~~~~~~~~~~~~~~~~^^
Feb 20 16:59:17 nexus python3[2979902]: File
"/usr/lib/python3/dist-packages/sentry_sdk/utils.py", line 1287, in
_is_contextvars_broken
Feb 20 16:59:17 nexus python3[2979902]: from eventlet.patcher import
is_monkey_patched # type: ignore
Looks like something in the sentry SDK (which I think you should have mentioned
you enabled).
I do have python3-sentry-sdk installed because it's a dependency of an
unrelated package but I have no idea what that is or what I did to
"enable" it. Removing python3-sentry-sdk makes matrix-synapse work again
even with python3-eventlet installed so I guess both have to be
installed to trigger it.
