It's really not a serious issue - I have _always_ had the old version of Ubuntu (and before that Debian) in my apt sources. So I have:
deb http://archive.ubuntu.com/ubuntu edgy main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu dapper main restricted universe multiverse
This works and I only discovered that it needed the dapper libdar when I tried a fresh install from CD last week.
Properly built packages should never have a problem if you keep the old Ubuntu version in your sources.
It's really not a serious issue - I have _always_ had the old version of Ubuntu (and before that Debian) in my apt sources. So I have:
deb http:// archive. ubuntu. com/ubuntu edgy main restricted universe multiverse archive. ubuntu. com/ubuntu dapper main restricted universe multiverse
deb http://
This works and I only discovered that it needed the dapper libdar when I tried a fresh install from CD last week.
Properly built packages should never have a problem if you keep the old Ubuntu version in your sources.