# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running ‘nixos-help’).

{ config, pkgs, ... }:

{
  imports = [ # Include the results of the hardware scan.
    ./hardware-configuration.nix
    ./common.nix
  ];

  fileSystems = {
    "/" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=root" "compress-force=zstd" ];
    };

    "/nix" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=nix" "compress-force=zstd" ];
    };

    "/var/log" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=log" "compress-force=zstd" ];
    };

    "/home" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=home" "compress-force=zstd" ];
    };

    "/boot" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=boot" "compress-force=zstd" ];
    };

    "/swap" = {
      device = "/dev/mapper/cryptroot";
      fsType = "btrfs";
      options = [ "subvol=swap" ];
    };

    "/boot/efi" = {
      device = "/dev/disk/by-uuid/0BFA-9A66";
      fsType = "vfat";
    };
  };

  swapDevices = [{ device = "/swap/swapfile"; }];

  nixpkgs.config.allowUnfree = true;

  boot = {
    loader = {
      systemd-boot.enable = true;
      efi = {
        canTouchEfiVariables = true;
        efiSysMountPoint = "/boot/efi";
      };
      grub = {
        enable = true;
        version = 2;
        device = "nodev";
        efiSupport = true;
        enableCryptodisk = true;
      };
    };
    initrd = {
      luks.devices = {
        "cryptroot" = {
          device = "/dev/disk/by-uuid/b9778e01-a86c-4c6b-beb3-f97888d4a6eb";
          keyFile = "/root_keyfile.bin";
        };
        "crypthome" = {
          device = "/dev/disk/by-uuid/d8e9b35d-704a-4f66-bc19-0dd3e158de36";
          keyFile = "/home_keyfile.bin";
        };
      };
      secrets = {
        "/root_keyfile.bin" = "/boot/root_keyfile.bin";
        "/home_keyfile.bin" = "/boot/home_keyfile.bin";
      };
    };
  };

  networking = {
    hostName = "trantor";
    interfaces = {
      enp3s0f1.useDHCP = true;
      wlp4s0.useDHCP = true;
    };
  };

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It‘s perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "21.05"; # Did you read the comment?
}