[arch-general] pacman new generation

[Bernardo Barros]

dpkg-reconfigure ? No.. it's not that at all.

In fact pacman already have some of those ideas,
it tries to be safe when it keeps old package in /var/cache/pacman/pkg,
but Nix goes further and tries to make sense of all those changes in the system.

I just see some other ideas that could be inspiring futures versions
of pacman, that all:

  http://www.st.ewi.tudelft.nl/~dolstra/pubs/eupfcdm-cbse2005-final.pdf