After adding the ppa:philip5/extra PPA
sudo add-apt-repository ppa:philip5/extra apt update ; apt upgrade I attempted to install digikam5 package and got the error:
$ apt install digikam5 … The following packages have unmet dependencies: digikam5 : Depends: libmarblewidget-qt5-23 (>= 4:15.12.0) but it is not going to be installed E: Unable to correct problems, you have held broken packages. Update
$ apt install digikam5 libmarblewidget-qt5-23 The following packages have unmet dependencies: libmarblewidget-qt5-23 : Depends: libastro1 (= 4:15.12.3-0ubuntu2) but 4:16.04.3-0ubuntu2~ubuntu16.04~ppa63 is to be installed E: Unable to correct problems, you have held broken packages. So an lower version of libastro1 is required than the one going to be installed.
Question
How do I install the version 5 of digikam?