i was trying to install
pulseaudio-module-bluetooth and received the following error:
The following packages have unmet dependencies:
pulseaudio-module-bluetooth : Depends: libpulse0 (= 1:11.1-1ubuntu7.4) but 1:11.1-1ubuntu7.5 is to be installed
Depends: pulseaudio (= 1:11.1-1ubuntu7.4)
E: Unable to correct problems, you have held broken packages.
i found a bug report for similar packages. it would appear that the packages were released and then the updates were reverted.