Disabling multi path is pretty easy. That being said, months of strange errors and mount issues took a really long time to discover that that was the issue.
All my attempts have failed in the following fashion:
. I boot the text only installer
. Once it runs I switch to a shell
. I edit the python code of subiquity / curtin to rip out anything that has to do with mutlipath
. I disable all systemd shite related to multipath
. I kill the installer (and systemd restarts it)
. When I get to partioning, I finally see my NVME devices instead of the weird multipath stuff
. I create a raid-0 partition on them
. The installer then fails miserably