How to use Stretch/testing packages?

Question

I want to install the last version of Deluge on my Raspbian.

The current distribution, Jessie (stable), contains the 1.3.10 version but I want the last one 1.3.13.

The next distribution, Stretch (testing), contains the 1.3.13 version.

How can I enable apt to get the packages from the Stretch distribution?

Answer 1

I've adapted the instructions here to our case.

First, create the following files in /etc/apt/preferences.d:

jessie.pref:

Package: *
Pin: release a=jessie
Pin-Priority: 900

stretch.pref:

Package: *
Pin: release a=stretch
Pin-Priority: 750

Now, creating a matching set for /etc/apt/sources.list.d:

jessie.list:

deb http://mirrordirector.raspbian.org/raspbian/ jessie main contrib non-free rpi

stretch.list:

deb http://mirrordirector.raspbian.org/raspbian/ stretch main contrib non-free rpi

Finally update the packages list:

sudo apt-get update

And now you can install Deluge from the Stretch distribution:

sudo apt-get install deluged -t stretch

Obtaining:

pi@raspberrypi:~ $ deluged --version
deluged: 1.3.13
libtorrent: 0.16.18.0

Answer 2

Except for this does not work for raspbian:

Pin: release a=jessie

Does not correctly match jessie

cat  /var/lib/apt/lists/mirrordirector.raspbian.org_raspbian_dists_stretch_InRelease

...
Origin: Raspbian
Label: Raspbian
Suite: testing
Codename: stretch
...

there is no Archive tag in the releasefile of raspbian, so one needs to match n= (Codename)

Package: *
Pin: release n=jessie
Pin-Priority: 900

...works for me.