Took a look at several partman modules and created a module for f2fs. I think it's already somewhat functional, if you're interested, here's the salsa repo: https://salsa.debian.org/stephanlachnit-guest/partman-f2fs
I don't know how to test it, but I don't have any spare devices right now anyway. Would love to hear some feedback! Best Regards, Stephan Lachnit
