Hello Mike

thanks for you quick response.

> > When I try to install tdm it complaines that "tdm requieres libr0 which
> > is not an install candidate" so the dependensies could not be resolved.
> > What to do next?

> Do you have builddeps configured in your sources.list?
No, I hadn'd.

I give it a next try witn the builddeps enabled (I really didn't understand 
what the repo is good for - exept I have a longer time to wait) and now 
trinity was not deinstalled - but some other packages - for example gimp, 
freecad...

So many thanks for your help
Rolf