miguel@Hermes:~$ sudo apt-get install mariadb-server-5.5
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 mariadb-server-5.5 : Depends: mariadb-client-5.5 (>= 5.5.25-mariadb1~precise) but it is not going to be installed
                      Depends: mariadb-server-core-5.5 (>= 5.5.25-mariadb1~precise) but it is not going to be installed
                      PreDepends: mariadb-common but it is not going to be installed
                      Recommends: libhtml-template-perl but it is not going to be installed
                      Conflicts: mysql-server-5.5 but 5.5.24-0ubuntu0.12.04.1 is to be installed
 mysql-server-5.5 : Depends: mysql-client-5.5 (>= 5.5.24-0ubuntu0.12.04.1)
                    Depends: mysql-server-core-5.5 (= 5.5.24-0ubuntu0.12.04.1)
                    PreDepends: mysql-common (>= 5.5.24-0ubuntu0.12.04.1)
                    Recommends: libhtml-template-perl but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
miguel@Hermes:~$ sudo apt-get -f install mariadb-server-5.5
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 mariadb-server-5.5 : Depends: mariadb-client-5.5 (>= 5.5.25-mariadb1~precise) but it is not going to be installed
                      Depends: mariadb-server-core-5.5 (>= 5.5.25-mariadb1~precise) but it is not going to be installed
                      PreDepends: mariadb-common but it is not going to be installed
                      Recommends: libhtml-template-perl but it is not going to be installed
                      Conflicts: mysql-server-5.5 but 5.5.24-0ubuntu0.12.04.1 is to be installed
 mysql-server-5.5 : Depends: mysql-client-5.5 (>= 5.5.24-0ubuntu0.12.04.1)
                    Depends: mysql-server-core-5.5 (= 5.5.24-0ubuntu0.12.04.1)
                    PreDepends: mysql-common (>= 5.5.24-0ubuntu0.12.04.1)
                    Recommends: libhtml-template-perl but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
miguel@Hermes:~$