apt-get fails to install pylint3

[Tony van der Hoff <tony@vanderhoff.org>]

Hi,

I'm trying to install pylint3 on my jessie system.
According to synaptic, pylint3 is available from backports, which I've 
enabled in sources.list. However, it depends on python3-astroid, which 
it refused to install:

#################################
tony@tony-lx:~$ sudo apt-get install pylint3
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:
 pylint3 : Depends: python3-astroid (>= 1.4.1) but 1.2.1-3 is to be 
installed
E: Unable to correct problems, you have held broken packages.
#################################

Has anyone got any suggestions?
--
Tony van der Hoff        | mailto:tony@vanderhoff.org
Buckinghamshire, England |