Version 42+ds-2 of ngspice is marked for autoremoval from testing on Fri 26 Apr 2024. It is affected by #1066482. The removal of ngspice will also cause the removal of (transitive) reverse dependencies: fritzing, kicad. You should try to prevent the removal by fixing these RC bugs.
Among the 5 debian patches
available in version 42+ds-3 of the package,
we noticed the following issues:
5 patches
where the metadata indicates that the patch has not yet been forwarded
upstream. You should either forward the patch upstream or update the
metadata to document its real status.