@nix_nix
I checked my Pidgin "About": version is 2.7.5(libpurple 2.7.3). I am not able to upgrade pidgin or extra-protocols due to "unmet dependencies". I have tried "--reinstall install" but get the same error. What is the right way to get rid of this annoying problem?

EDIT: I installed anew liburple0, pidgin and extra protocols from .deb files. Lets see if the update error will persist.
EDIT1: Updated Pidgin to version: pidgin-2.7.5-2nix3