I'm using Precise Pangolin, and I sometimes notice packages I'd like to install exist on http://us.archive.ubuntu.com/ubuntu/ hardy main
but not on http://us.archive.ubuntu.com/ubuntu/ precise main
. I have two related questions:
- Is it safe to install these packages manually (e.g. by downloading from
http://packages.ubuntu.com/hardy
?) If so, can I also add the hardy sources to my
/etc/apt/sources.list
, like so?deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse deb http://us.archive.ubuntu.com/ubuntu/ hardy main deb-src http://us.archive.ubuntu.com/ubuntu/ hardy main