12.04 install problems

Here is the error produced by trying to install dropping letters in 12.04:
$ sudo apt-get install dropping-letters
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:
 dropping-letters : Depends: qtdeclarative5-hud1.0 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

This is the trail of missing dependencies up until hud.
dropping-letters qtdeclarative5-hud1.0 libhud-qt1 libhud1 hud

Not sure if I should keep going trying to manually install each package it tells me I am missing, but this missing dependency problem is not really making installing touch-coreapps easy:

$ sudo apt-get install touch-coreapps
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:
 touch-coreapps : Depends: dropping-letters but it is not going to be installed
E: Unable to correct problems, you have held broken packages.