I see some in .home, but steam installs games in /. Why is the folder not universal?
Are you sure these aren’t just configuration files which you are seeing in /home? … as far as I know, most, if not all, repo-sourced software is installed in / directories.
Maybe flatpak etc. differs … I don’t use any of those. 
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Oh, sorry I meant to say that /home is config files. When you do Partitions, you do /bin to keep apps incase you have to reinstall right?
I suppose you could back up the application files, but generally if you back up your /home (including all .dot-files), when you reinstall it’s probably better to get fresh copies anyway, as the configurations should be preserved in your restored /home.
You just need to make a list of the software you’ve added.
Ya, I have that pakage list comand somewhere.
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No … by default steam installs games and the like into HOME.
Thats not how that works.
Preserving /bin acrossed installs does not make sense … as many executables there would need more than the simple bin file.
And it would be no substitute for installing the packages.
Heres the two
pacman -Qqen > ./pkglist_native.txt
pacman -Qqem > ./pkglist_alien.txt
Then you can install from the native list (alien [AUR] will not work the same):
sudo pacman -Syu --needed - < pkglist_native.txt
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I use KAlarm to do this on a daily basis, overwriting the pkglist file which goes to a mounted disk alongside my back-in-time snapshots… so it will survive hardware failure.
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