you have retained broken packages code example
Example 1: Unable to correct problems, you have held broken packages.
sudo apt-get install -f
sudo dpkg --configure -a
Example 2: Unable to correct problems, you have held broken packages
$ sudo dpkg --list
then look for a package with the name of the one you're trying to install
eg mysql and purge them by name. I repeat by name.
$sudo apt-get purge <package name>