Seeing a similar case today (non-PASS).
To be removed
Not seeing anything replacing them, but lensfun
is being upgraded (along with a large number of libs
Will see what it does, after a little more searching...
Adding back ufraw
and appears to have processed OK.
Adding back darktable
reports the same "Unchanged" for liblensfun0
Appears to install OK.
Should this be a Broken Package report?
If I "Reload" and "Mark All Upgrades", Synaptic wants to remove darktable
again, without doing any installs or upgrades. Not going to let it, for now...