{
   # required by impermanence
  fileSystems."/persist".neededForBoot = true;

  disko.devices = {
    disk.sda = {
      type = "disk";
      device = "/dev/sda";
      content = {
        type = "gpt";
        partitions = {
          ESP = {
            label = "boot";
            name = "ESP";
            size = "512M";
            type = "EF00";
            content = {
              type = "filesystem";
              format = "vfat";
              mountpoint = "/boot";
              mountOptions = [
                "defaults"
              ];
            };
          };
          root = {
            size = "100%";
            label = "root";
            content = {
              type = "btrfs";
              extraArgs = [ "-L" "nixos" "-f"];
              subvolumes = {
                "@root" = {
                  mountpoint = "/";
                  mountOptions = [ "subvol=root" "compress-force=zstd:2"];
                };
                "@home" = {
                  mountpoint = "/home";
                  mountOptions = [ "subvol=home" "compress-force=zstd:2"];
                };
                "@nix" = {
                  mountpoint = "/nix";
                  mountOptions = [ "subvol=nix" "compress-force=zstd:2"];
                };
                "@persist" = {
                  mountpoint = "/persist";
                  mountOptions = [ "subvol=persist" "compress-force=zstd:2"];
                };
                "@log" = {
                  mountpoint = "/var/log";
                  mountOptions = [ "subvol=log" "compress-force=zstd:2"];
                };
                "@swap" = {
                  mountpoint = "/swap";
                  swap.swapfile.size = "4G";
                };
              };
            };
          };
        };
      };
    };
  };
}