The reason I am asking this question is I am concerned about simple rollback (I already read how to find out what packages were installed). So I would like to set global (per entire system) option, that forces system to store each package before installing/updating it.

With such workflow, I could update whatever I want, and if for example the newest version of Dolphin would be worse than previous one I could simply go to directory with stored packages and install previous version instead (the previous version is either base version -- on ISO -- or version from previous update).

Is there such feature as global option to automatically store each package before install? It have to be guaranteed that no package is updated on-fly, i.e. without being stored before.

I am learning LMDE, but answer for any .deb based system would be fine -- Ubuntu, Debian, you name it.