Trying to install zpm from the latest packages, I get this:
$ sudo apt-get install zpm
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:
zpm : Depends: python-swiftclient but it is not installable
E: Unable to correct problems, you have held broken packages.
Trying to install
zpm
from the latest packages, I get this: