Greetings,
I'm not sure where to report a bug, so I thought I putting it in the forum is ok. I hope that this is the right place.
The problem: When installing from the live ISO, Calamares creates a wrong fstab-entry for a ReiserFS partition. For the type, it has "reiser" instead of "reiserfs".
This wrong fstab-entry then is ignored, which leads to the automatic creation of a new var-folder.
But you don't want that, because you just set up a var-partion with ReiserFS on your non-SSD disk.
I used the artix-lxqt-runit-20181008-x86_64.iso
Thanks for taking care and keep up the good work!