I wanted to install Ubuntu 9.04 (jaunty) instead of Debian (Etch) because Debian (Etch) became «old stable», cannot be updated via regular Gnome Update Manager and most of my friends used Ubuntu. More here
Finally I installed all the marked packages and tried to compile one my software with Kdevelop. All worked.
As a free bonus I even got the Debian logo on my desktop and desktop in general got the feel and look like in Debian.