Cannot install Percona Server on Debian Jeese. packages have unmet dependencies

Is it me or the repo is broken?
Im using these instructions:

Distributor ID: Debian
Description: Debian GNU/Linux 8.1 (jessie)
Release: 8.1
Codename: jessie

soporte@ayuda:~$ su -
root@ayuda:~# apt-get install percona-server-server-5.6
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:
percona-server-server-5.6 : Depends: percona-server-client-5.6 (>= 5.6.25-73.1-1.jessie) but it is not going to be installed
Depends: libdbi-perl but it is not installable
Depends: libdbd-mysql-perl but it is not installable
Depends: libaio1 (>= 0.3.93) but it is not installable
E: Unable to correct problems, you have held broken packages.

My mistake.
I forgot to enable a set of source repos in my debian sources.list configuration
deb jessie main contrib
deb-src jessie main contrib