{secret, ...}: let
in {
  systemd.services.nix-daemon.environment.TMPDIR = "/nix/tmp";

  fileSystems = {
    "/" = {
      device = "none";
      fsType = "tmpfs";
      options = ["defaults" "size=512M" "mode=755" "noexec"];
    };

    "/tmp" = {
      device = "none";
      fsType = "tmpfs";
      options = ["defaults" "size=512M" "mode=755"];
    };

    "/nix/persist" = {
      device = "heater-ssd/persist";
      fsType = "zfs";
      neededForBoot = true;
    };

    "/nix" = {
      device = "heater-ssd/local/nix";
      fsType = "zfs";
    };

    "/home" = {
      device = "heater-ssd/ephemeral/home";
      fsType = "zfs";
      neededForBoot = true;
    };

    "/root" = {
      device = "heater-ssd/ephemeral/root";
      fsType = "zfs";
      neededForBoot = true;
    };

    "/nix/tmp" = {
      device = "heater-ssd/ephemeral/nix-tmp";
      fsType = "zfs";
      neededForBoot = true;
    };

    "/boot" = {
      device = "/dev/disk/by-uuid/c0a6bfbb-3553-4dc9-a299-b70070b8a52b";
      fsType = "ext4";
    };

    "/boot/EFI" = {
      device = "/dev/disk/by-uuid/90B0-657C";
      fsType = "vfat";
    };
  };

  swapDevices = [];
}