Thoughts on new messages?

[Jason Gunthorpe <jgg@gpu.srv.ualberta.ca>]

I've fiddled around with adding more informative messages, you think this
is going too far? 

Wakko{jgg}~/work/apt/build/bin#./apt-get install eterm
Reading Package Lists... Done
Building Dependancy Tree... 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.

Since you only requested a single operation it is extremely likely that
the package is simply not installable and a bug report against
that package should be filed.
The following information may help to resolve the situation

Sorry, but the following packages are broken - this means they have unmet
dependencies:
  eterm: Depends:eterm-backgrounds but it is not installable
         Depends:giflib3g (>= 3.0-5.2)
E: Sorry, broken packages
Returning 100.

Wakko{jgg}~/work/apt/build/bin#./apt-get install eterm-backgrounds
Reading Package Lists... Done
Building Dependancy Tree... Done
Package eterm-backgrounds has no available version, but exists in the database.
This typically means that the package was mentioned in a dependency and
never uploaded, or that it is an obsolete package.
E: Package eterm-backgrounds has no installation candidate 

Wakko{jgg}~/work/apt/build/bin#./apt-get install mail-transport-agent
Reading Package Lists... Done
Building Dependancy Tree... Done
Package mail-transport-agent is a virtual package provided by:
  exim 1.92-3 [Installed]
  zmailer 2.99.49.9-2
  ssmtp 2.29-1
  smail 3.2.0.102-1
  sendmail 8.9.1-9
  exim 2.04-3
E: Package mail-transport-agent has no installation candidate