上次更新后，我的 gimp 消失了。当我尝试安装它时，我收到了消息：
sudo apt install gimp
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
gimp : Depends: libgimp2.0 (<= 2.8.22-z) but 2.9.7~17-ubu16.04.1~ppa~9eb75cd is to be installed
Depends: gimp-data (<= 2.8.22-z) but 2.9.7~17-ubu16.04.1~ppa~9eb75cd is to be installed
E: Unable to correct problems, you have held broken packages.
我怎样才能重新获得它？