To export a list of all installed packages, you can use the following command:
sudo dpkg --get-selections > selections.txt
But this will loose any {A}
markers for automatically installed packages and therefore produce a lot of garbage when dependencies change.
To export only manually installed packages, use aptitude
like this:
sudo aptitude search '~i!~M' -F '%p install' > selections.txt
(More aptitude
filterstrings can be found on their project page.)
On the other machine, use the following command to set the new markers:
sudo dpkg --set-selections < selections.txt
Now run aptitude
and resolve the dependencies.