I would like to install some packages from the testing branch without switching to it if possible. The big packages are things like xfce4 and mysql-workbench. I've done this by making a testing.list file containing the deb sources for jessie/testing.Sadly, whenever I try to install a big package from the testing branch the following happends:   sem@debian:~$ sudo apt-get install mysql-workbench/testingResults inReading package lists... DoneBuilding dependency tree       Reading state information... DoneSelected version '6.1.7+dfsg-1' (Debian:testing [amd64]) for 'mysql-workbench'Some packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor been moved out of Incoming.The following information may help to resolve the situation:The following packages have unmet dependencies: mysql-workbench : Depends: libpango-1.0-0 (>= 1.18.0) but it is not going to be installed                   Depends: libpangocairo-1.0-0 (>= 1.14.0) but it is not going to be installed                   Depends: libstdc++6 (>= 4.9) but 4.7.2-5 is to be installed                   Depends: python:any (>= 2.6.6-7~)                   Depends: mysql-workbench-data (= 6.1.7+dfsg-1) but 5.2.40+dfsg-2 is to be installed                   Depends: python-pyodbc (>= 2.1.8) but 2.1.7-1+b1 is to be installedE: Unable to correct problems, you have held broken packages.I tried generic solutions like sudo apt-get -f install but no luck. Can anyone help? 
Installing mysql-workbench from the testing ppa (Jessie) in Wheezy
apt;debian