nanuqsaurus/modules/system/disko-btrfs.nix

{ lib, ... }:

{
  disko.devices = {
    disk.main = {
      type = "disk";
      device = lib.mkDefault "/dev/vda";
      content = {
        type = "gpt";
        partitions = {
          ESP = {
            size = "550M";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
              mountOptions = [
                "fmask=0022"
                "dmask=0022"
              ];
            };
          };

          nixos = {
            size = "100%";
            content = {
              type = "btrfs";
              extraArgs = [ "-f" ];
              label = "nixos";
              subvolumes = {
                root = {
                  mountpoint = "/";
                  mountOptions = [
                    "compress=zstd"
                  ];
                };

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

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

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