config/systems/x86_64-linux/earth/disk-config.nix

{
  disko.devices = {
    disk = {
      main = {
        type = "disk";
        device = "/dev/nvme0n1";
        content = {
          type = "gpt";
          partitions = {
            ESP = {
              size = "1G";
              type = "EF00";
              content = {
                type = "filesystem";
                format = "vfat";
                mountpoint = "/boot";
                mountOptions = ["umask=0077" "nofail"];
              };
            };
            root = {
              name = "root";
              size = "100%";
              content = {
                type = "btrfs";
                extraArgs = ["-f"];
                subvolumes = {
                  "/rootfs" = {
                    mountpoint = "/";
                  };

                  "/home" = {
                    mountOptions = ["compress=zstd"];
                    mountpoint = "/home";
                  };

                  "/home/zoey" = {};

                  "/nix" = {
                    mountOptions = [
                      "compress=zstd"
                    ];
                    mountpoint = "/nix";
                  };
                };
              };
            };
          };
        };
      };
      backup = {
        type = "disk";
        device = "/dev/nvme1n1";
        content = {
          type = "gpt";
          partitions = {
            zbk = {
              size = "100%";
              content = {
                type = "btrfs";
                extraArgs = ["-f"];
                subvolumes = {
                  "/mnt/zbk" = {
                    mountOptions = [
                      "compress=zstd"
                      "noatime"
                    ];
                    mountpoint = "/mnt/zbk";
                  };
                };
              };
            };
          };
        };
      };
    };
  };
}