How do I install missing dependencies on my system?

Solution 1:

Other than the installation and/or apt-get -f install suggestions mentioned in comments, you can tell aptitude to find a different resolution by using the , and . keys to navigate through the list of available resolutions in the examine view (entered with e). Sometimes the first suggested resolution involves uninstalling packages, whereas the next few will involve upgrade/downgrade/re-install operations.

In addition, you can "accept" or "reject" proposals regarding individual packages by selecting them in the list at the top and using a or r keys respectively. This will force aptitude to find solutions that respect your requirements (although if you specify too many it may fail to find a resolution altogether).