Comment 0 for bug 1387

libsdl1.2-dev is not installable in breezy :

$ sudo apt-get install libsdl1.2-dev
Reading package lists... Done
Building dependency 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
or been moved out of Incoming.

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:

The following packages have unmet dependencies:
  libsdl1.2-dev: Depends: aalib1-dev but it is not installable
E: Broken packages

$ cat /etc/apt/sources.list|grep -v ^#

deb http://fr.archive.ubuntu.com/ubuntu breezy main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu breezy main restricted

deb http://fr.archive.ubuntu.com/ubuntu breezy-updates main restricted
deb-src http://fr.archive.ubuntu.com/ubuntu breezy-updates main restricted

 deb http://fr.archive.ubuntu.com/ubuntu breezy universe
 deb-src http://fr.archive.ubuntu.com/ubuntu breezy universe

deb http://security.ubuntu.com/ubuntu breezy-security main restricted
deb-src http://security.ubuntu.com/ubuntu breezy-security main restricted

 deb http://security.ubuntu.com/ubuntu breezy-security universe
 deb-src http://security.ubuntu.com/ubuntu breezy-security universe

It looks like to be a temporary problem (aalib1-dev renamed to aalib1)
http://packages.ubuntu.com/changelogs/pool/main/a/aalib/aalib_1.4p5-28/changelog

"Temporarily includes an aalib1 dummy package, to avoid dependency headaches. Will be removed after everything is recompiled."