Good enough for this case though?
Barry just needs to snapshot a system, install one package, snapshot again and diff.
Since the only difference is a few minutes and one install, this sounds doable.
If the diff is huge, he can always use lots of grep -v's to filter it out. Just like he's used to doing for logs.
Cheers,
Ben
I have come to believe that idealism without discipline is a quick road to disaster, while discipline without idealism is pointless. -- Aaron Ward (my brother)