> If the packaging system wants to remove a package that came from > oldstable for dependency reasons, having oldstable sources listed > won't change that. > > Some old packages (usually versioned libraries) are kept around forever > and don't cause any problems. They just sit on your hard drive doing > nothing, because nothing uses them or depends on them. > > The only time it's advantageous to keep oldstable sources is if you > need to *add* something from oldstable, typically a library, in order to > run some compiled binary program that you got from outside of Debian. > In these cases, you're on your own -- there's no support for it. Also, > going back just one release may not be sufficient. You'll often end > up trawling through the archive of past packages to find a compatible > library, after you estimate what year the program was compiled. > > Personally, I'd recommend replacing the oldstable sources with the stable > sources (but don't use the word "stable" or "oldstable"; use the release > name; I'm just using generalized language here). If it turns out later > that you need to add a package from bookworm on your trixie system, *then* > you can add bookworm sources (or download the singleton package directly > from the archive). Otherwise, there's no need to continue downloading > lists of packages from multiple releases. It's just a waste of your > disk space and bandwidth.
Thank you very much for your very usefull informations. It answers all my questions and worries I had. So, "best" way is to remove the old entries and use only trixie-related ones. This litle question/issue is fully solved and can safely be closed. I am looking forward to trixie and are very excited to it! Best regards and thaky you all for your help! Hans
