{
  config,
  inputs,
  pkgs,
  ...
}:

let
  user = "olaf";
  keys = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOk8iAnIaa1deoc7jw8YACPNVka1ZFJxhnU4G74TmS+p" ];
in
{
  imports = [
    ../../modules/nixos/disk-config.nix
    ../../modules/shared
  ];

  # Use the systemd-boot EFI boot loader.
  boot = {
    loader = {
      systemd-boot = {
        enable = true;
        configurationLimit = 42;
      };
      efi.canTouchEfiVariables = true;
    };
    initrd.availableKernelModules = [
      "xhci_pci"
      "ahci"
      "nvme"
      "usbhid"
      "usb_storage"
      "sd_mod"
    ];
    # Uncomment for AMD GPU
    # initrd.kernelModules = [ "amdgpu" ];
    kernelPackages = pkgs.linuxPackages_latest;
    kernelModules = [ "uinput" ];
  };

  # Set your time zone.
  time.timeZone = "America/New_York";

  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
  # Per-interface useDHCP will be mandatory in the future, so this generated config
  # replicates the default behaviour.
  networking = {
    hostName = "%HOST%"; # Define your hostname.
    useDHCP = false;
    interfaces."%INTERFACE%".useDHCP = true;
  };

  nix = {
    nixPath = [ "nixos-config=/home/${user}/.local/share/src/nixos-config:/etc/nixos" ];
    settings = {
      allowed-users = [ "${user}" ];
      trusted-users = [
        "@admin"
        "${user}"
      ];
      substituters = [
        "https://nix-community.cachix.org"
        "https://cache.nixos.org"
      ];
      trusted-public-keys = [ "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" ];
    };

    package = pkgs.nix;
    extraOptions = ''
      experimental-features = nix-command flakes
    '';
  };

  # Manages keys and such
  programs = {
    gnupg.agent.enable = true;

    # Needed for anything GTK related
    dconf.enable = true;

    # My shell
    zsh.enable = true;
  };

  services = {
    displayManager.defaultSession = "none+bspwm";
    xserver = {
      enable = true;

      # Uncomment these for AMD or Nvidia GPU
      # videoDrivers = [ "amdgpu" ];
      # videoDrivers = [ "nvidia" ];

      # Uncomment this for Nvidia GPU
      # This helps fix tearing of windows for Nvidia cards
      # services.xserver.screenSection = ''
      #   Option       "metamodes" "nvidia-auto-select +0+0 {ForceFullCompositionPipeline=On}"
      #   Option       "AllowIndirectGLXProtocol" "off"
      #   Option       "TripleBuffer" "on"
      # '';

      # LightDM Display Manager
      displayManager.lightdm = {
        enable = true;
        greeters.slick.enable = true;
        background = ../../modules/nixos/config/login-wallpaper.png;
      };

      # Tiling window manager
      windowManager.bspwm = {
        enable = true;
      };

      xkb = {
        # Turn Caps Lock into Ctrl
        layout = "us";
        options = "ctrl:nocaps";
      };
    };

    # Better support for general peripherals
    libinput.enable = true;

    # Let's be able to SSH into this machine
    openssh.enable = true;

    # Sync state between machines
    # Sync state between machines
    syncthing = {
      enable = true;
      openDefaultPorts = true;
      dataDir = "/home/${user}/.local/share/syncthing";
      configDir = "/home/${user}/.config/syncthing";
      user = "${user}";
      group = "users";
      guiAddress = "127.0.0.1:8384";
      overrideFolders = true;
      overrideDevices = true;

      settings = {
        devices = { };
        options.globalAnnounceEnabled = false; # Only sync on LAN
      };
    };

    # Picom, my window compositor with fancy effects
    #
    # Notes on writing exclude rules:
    #
    #   class_g looks up index 1 in WM_CLASS value for an application
    #   class_i looks up index 0
    #
    #   To find the value for a specific application, use `xprop` at the
    #   terminal and then click on a window of the application in question
    #
    picom = {
      enable = true;
      settings = {
        animations = true;
        animation-stiffness = 300.0;
        animation-dampening = 35.0;
        animation-clamping = false;
        animation-mass = 1;
        animation-for-workspace-switch-in = "auto";
        animation-for-workspace-switch-out = "auto";
        animation-for-open-window = "slide-down";
        animation-for-menu-window = "none";
        animation-for-transient-window = "slide-down";
        corner-radius = 12;
        rounded-corners-exclude = [
          "class_i = 'polybar'"
          "class_g = 'i3lock'"
        ];
        round-borders = 3;
        round-borders-exclude = [ ];
        round-borders-rule = [ ];
        shadow = true;
        shadow-radius = 8;
        shadow-opacity = 0.4;
        shadow-offset-x = -8;
        shadow-offset-y = -8;
        fading = false;
        inactive-opacity = 0.8;
        frame-opacity = 0.7;
        inactive-opacity-override = false;
        active-opacity = 1.0;
        focus-exclude = [
        ];

        opacity-rule = [
          "100:class_g = 'i3lock'"
          "60:class_g = 'Dunst'"
          "100:class_g = 'Alacritty' && focused"
          "90:class_g = 'Alacritty' && !focused"
        ];

        blur-kern = "3x3box";
        blur = {
          method = "kernel";
          strength = 8;
          background = false;
          background-frame = false;
          background-fixed = false;
          kern = "3x3box";
        };

        shadow-exclude = [
          "class_g = 'Dunst'"
        ];

        blur-background-exclude = [
          "class_g = 'Dunst'"
        ];

        backend = "glx";
        vsync = false;
        mark-wmwin-focused = true;
        mark-ovredir-focused = true;
        detect-rounded-corners = true;
        detect-client-opacity = false;
        detect-transient = true;
        detect-client-leader = true;
        use-damage = true;
        log-level = "info";

        wintypes = {
          normal = {
            fade = true;
            shadow = false;
          };
          tooltip = {
            fade = true;
            shadow = false;
            opacity = 0.75;
            focus = true;
            full-shadow = false;
          };
          dock = {
            shadow = false;
          };
          dnd = {
            shadow = false;
          };
          popup_menu = {
            opacity = 1.0;
          };
          dropdown_menu = {
            opacity = 1.0;
          };
        };
      };
    };

    gvfs.enable = true; # Mount, trash, and other functionalities
    tumbler.enable = true; # Thumbnail support for images

    # Emacs runs as a daemon
    emacs = {
      enable = true;
      package = pkgs.emacs-unstable;
    };
  };

  # When emacs builds from no cache, it exceeds the 90s timeout default
  systemd.user.services.emacs = {
    serviceConfig.TimeoutStartSec = "7min";
  };

  # Enable CUPS to print documents
  # services.printing.enable = true;
  # services.printing.drivers = [ pkgs.brlaser ]; # Brother printer driver

  # Enable sound
  # sound.enable = true;
  # hardware.pulseaudio.enable = true;

  # Video support
  hardware = {
    graphics.enable = true;
    # nvidia.modesetting.enable = true;

    # Enable Xbox support
    # xone.enable = true;

    # Crypto wallet support
    ledger.enable = true;
  };

  # Add docker daemon
  virtualisation.docker.enable = true;
  virtualisation.docker.logDriver = "json-file";

  # It's me, it's you, it's everyone
  users.users = {
    ${user} = {
      isNormalUser = true;
      extraGroups = [
        "wheel" # Enable ‘sudo’ for the user.
        "docker"
      ];
      shell = pkgs.zsh;
      openssh.authorizedKeys.keys = keys;
    };

    root = {
      openssh.authorizedKeys.keys = keys;
    };
  };

  # Don't require password for users in `wheel` group for these commands
  security.sudo = {
    enable = true;
    extraRules = [
      {
        commands = [
          {
            command = "${pkgs.systemd}/bin/reboot";
            options = [ "NOPASSWD" ];
          }
        ];
        groups = [ "wheel" ];
      }
    ];
  };

  fonts.packages = with pkgs; [
    dejavu_fonts
    emacs-all-the-icons-fonts
    feather-font # from overlay
    jetbrains-mono
    font-awesome
    noto-fonts
    noto-fonts-emoji
  ];

  environment.systemPackages = with pkgs; [
    gitAndTools.gitFull
    inetutils
  ];

  system.stateVersion = "21.05"; # Don't change this
}