{ nixpkgs, nixpkgs-unstable, nixpkgs-master, custom, hostname, rlib, inputs }:
{ config, lib, ... }:

with lib;
let
  defaultBtrfsOpts = [
    "noatime"
    "space_cache"
  ];
in {
  boot = {
    initrd.availableKernelModules = [
      "xhci_pci"
      "ahci"
      "usbhid"
      "usb_storage"
      "sd_mod"
      "nvme"
    ];
    initrd.kernelModules = [ "dm-snapshot" ];
    kernelModules = [ "kvm-amd" ];
    extraModulePackages = [ ];
    kernelPackages = nixpkgs-unstable.linuxPackages_latest;
  };

  powerManagement.cpuFreqGovernor = nixpkgs-unstable.lib.mkDefault "performance";

  fileSystems = {
    "/" =
      {
        device = "heater-zpool/local/root";
        fsType = "zfs";
      };
    
    "/nix" =
      {
        device = "heater-zpool/local/nix";
        fsType = "zfs"; 
      };

    "/home" =
      {
        device = "heater-zpool/safe/home";
        fsType = "zfs";
      };
	
    "/var/lib/hydra" =
      {
        device = "heater-zpool/persist/hydra/prog";
 	fsType = "zfs";
      };

    "/var/lib/postgresql" =
      {
	device = "heater-zpool/persist/hydra/db";
	fsType = "zfs";
      };

    "/var/lib/nomad" =
      {
        device = "heater-zpool/persist/nomad";
        fsType = "zfs";
      };

    "/var/lib/docker" =
      {
        device = "heater-zpool/persist/docker";
        fsType = "zfs";
      };

    "/var/lib/secrets" = mkIf config.services.vault-agent.enable
      {
        device = "tmpfs";
        fsType = "tmpfs";
        options = [
          "mode=0640"
          "uid=${toString config.users.users.vault-agent.uid}"
          "gid=${toString config.users.groups.root.gid}"
          "noexec"
          "rw"
          "size=64M"
        ];
      };

    "/etc/vault-agent" = mkIf config.services.vault-agent.enable
      {
        device = "heater-zpool/persist/vault-agent";
        fsType = "zfs";
      };

    "/boot" =
      {
        device = "/dev/disk/by-uuid/5e590840-9e62-4231-8ac5-e6a27325254d";
        fsType = "ext4";
      };

    "/boot/EFI" =
      {
        device = "/dev/disk/by-uuid/D381-9D12";
        fsType = "vfat";
      };

    "/mnt/data1" =
      {
        device = "/dev/disk/by-uuid/0ab799ad-c5cf-4a5d-b5cc-7891115eb5e4";
        fsType = "btrfs";
        options = [
          "subvol=/"
        ] ++ defaultBtrfsOpts;
      };

    "/mnt/data2" =
      {
        device = "/dev/mapper/VG_HDD2-Data0";
        fsType = "ext4";
      };

    "/mnt/data3" =
      {
        device = "/dev/mapper/VG_0-LV_Data0";
        fsType = "ext4";
      };

    "/mnt/net/Magic_RB" =
      {
        fsType = "nfs";
        device = "blowhole.in.redalder.org:/Magic_RB";
      };
  };

  #  fileSystems."/mnt/win10" =
  #    {
  #      device = "/dev/disk/by-uuid/44394608-0b1b-46b2-9f2e-4e9afde83f5b";
  #      fsType = "ntfs-3g";
  #      options = [
  #        "uid=${builtins.toString config.users.users.main.uid}"
  #        "gid=${builtins.toString config.users.groups.main.gid}"
  #        "umask=002"
  #      ];
  #    };

  swapDevices = [ ];
}