Don't format some partitions #1154
Description
I'm using disko to install a raspberry pi via nixos-anyware, and some data will be located on an external drive… but I don't want to erase data on this external drive. I'd also like to be able to specify for ZFS that a new dataset should be created without erasing the existing pool.
I tried to read the doc, but I can't find anything. Is it possible to specify that some partitions/disks should not be formatted/erased? I'd prefer something that I write directly in my config to avoed errors, but a nixos-anywhere-compatible command could also work.