1{den, ...}: {
 2  den.hosts.hyacine.settings = {
 3    disk.btrfs-disko = {
 4      deviceId = "/dev/vda";
 5      grubPart = true;
 6    };
 7  };
 8
 9  den.aspects.hyacine = {
10    includes = [
11      den.aspects.disk.btrfs-disko
12      den.aspects.disk.preservation
13    ];
14  };
15}