[QGIS-Developer] URGENT AS CAN BE: QGIS 3.16.12 and sip 6?

[Nyall Dawson]

Hi all,

Question: was QGIS 3.16.12 for Windows released using a sip version 5
or 6? If so, we need to pull this release ASAP and put out a public
retraction notice -- it will have completely broken Processing and
result in risk of deadlocks when running any Python based processing
algorithm.

See description in
https://github.com/qgis/QGIS/pull/45128#issuecomment-958529173

I CANNOT OVERSTATE HOW DAMAGING THIS REGRESSION IS (if indeed it has
slipped into the LTR Windows release builds)

Nyall