having a look around to see if I could get packages for mageia 3 or mageia 4, I found a very old :
http://www.trinitydesktop.org/wiki/bin/view/Documentation/MandrivaBinaryInst...
mageia was mandriva years ago, so you re probably mostly ready to provide packages for mageia, but this old mandriva repo is probably not working "as is" with latest mageia
I think quite a few mageia users could be happy to have a kde3 revived desktop, just like I am, and i d be willing to help you for mageia testing and packaging
( mageia is still a very old redhat fork , using rpm packages )