nixos/hosts/default/configuration.nix

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

{
  # Imports
  imports =
    [
      ./hardware-configuration.nix
      inputs.home-manager.nixosModules.default
    ];

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  # Modules
  boot.blacklistedKernelModules = [ "rtl8xxxu" "iwlwifi"];
  boot.extraModulePackages = with config.boot.kernelPackages; [
    rtl8192eu
  ];

  # Set the hostname
  networking.hostName = "nixos";

  # Enable flakes
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

  # Allow unfree packages
  nixpkgs.config.allowUnfree = true;

  # Disable hibernation, sleep and other friends
  systemd.targets = {
    sleep = {
      enable = false;
      unitConfig.DefaultDependencies = "no";
    };
    suspend = {
      enable = false;
      unitConfig.DefaultDependencies = "no";
    };
    hibernate = {
      enable = false;
      unitConfig.DefaultDependencies = "no";
    };
    "hybrid-sleep" = {
      enable = false;
      unitConfig.DefaultDependencies = "no";
    };
  };

  # Enable networking
  networking.networkmanager.enable = true;

  # Set your time zone.
  time.timeZone = "Europe/Zagreb";

  # Set iwd as wifi backend
  networking.wireless.iwd.enable = true;
  networking.networkmanager.wifi.backend = "iwd";
  networking.networkmanager.wifi.powersave = false;

  ### --- Enabling DNS Over HTTPS --- ###

  # make network manager not set a default dns
  networking.networkmanager.dns = "none";

  # set dns to local nameservers
  networking.nameservers = [ "127.0.0.1" "::1" ];

  # Dnscrypt for dns over https
  services.dnscrypt-proxy2 = {
    enable = true;
    settings = {
      ipv6_servers = true;
      require_dnssec = true;
      sources.public-resolvers = {
        urls = [
          "https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v3/public-resolvers.md"
          "https://download.dnscrypt.info/resolvers-list/v3/public-resolvers.md"
        ];
        cache_file = "/var/lib/dnscrypt-proxy2/public-resolvers.md";
        minisign_key = "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
      };
      # use mullvad dns server
      server_names = [ "mullvad-base-doh" ];
    };
  };

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "hr_HR.UTF-8";
    LC_IDENTIFICATION = "hr_HR.UTF-8";
    LC_MEASUREMENT = "hr_HR.UTF-8";
    LC_MONETARY = "hr_HR.UTF-8";
    LC_NAME = "hr_HR.UTF-8";
    LC_NUMERIC = "hr_HR.UTF-8";
    LC_PAPER = "hr_HR.UTF-8";
    LC_TELEPHONE = "hr_HR.UTF-8";
    LC_TIME = "hr_HR.UTF-8";
  };

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
    options = "caps:escape";
  };

  # Enable touchpad support
  services.xserver.libinput.enable = true;

  # Enable the KDE Plasma Desktop Environment.
  services.xserver.displayManager.sddm = {
    enable = true;
    theme = "catppuccin-sddm-corners";
    # Fix keyboard showing up unnecesarilly
    settings = {
      General = { 
        InputMethod="";
      };
    };
  };
  services.xserver.desktopManager.plasma5.enable = true;
  environment.plasma5.excludePackages = with pkgs.libsForQt5; [
    plasma-browser-integration
    konsole
    oxygen
  ];

  # Enable CUPS to print documents.
  services.printing.enable = false;

  # Enable gvfs
  services.gvfs.enable = true;

  # Enable sound with pipewire.
  sound.enable = true;
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };

  # Enable OpenGL
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };

  # Nvidia settings
  hardware.nvidia = {

    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    powerManagement.enable = true;

    # Nvidia fine grainder power management, super experimental.
    powerManagement.finegrained = false;

    open = false;

    # Enable the Nvidia settings menu,
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
  };

  # Nvidia prime settings
  hardware.nvidia.prime = {
    reverseSync.enable = true;
    intelBusId = "PCI:5:0:0";
    nvidiaBusId = "PCI:1:0:0";
  };

  # Enable bluetooth
  hardware.bluetooth.enable = true;

  # Open Tablet Driver setup
  hardware.opentabletdriver.enable = true;

  # Load nvidia driver for Xorg and Wayland
  services.xserver.videoDrivers = [ "nvidia" ];

  # Steam settings
  programs.steam = {
    enable = true;
    remotePlay.openFirewall = true;
    dedicatedServer.openFirewall = true;
  };

  # List packages installed in system profile.
  environment.systemPackages = with pkgs; [
    neovim
    usbutils
    pciutils
    lshw
    vulkan-tools
    restic
    rsync
    git
    jq
    wireguard-tools
    unzip
    gamemode
    ipafont
    ryzenadj
    (catppuccin-kde.override { winDecStyles = ["classic" "modern"] ;})
    catppuccin-gtk
    catppuccin-cursors.frappeRosewater
    catppuccin-sddm-corners
    (catppuccin-papirus-folders.override { flavor = "frappe"; accent = "pink"; })
  ];

  # Wireguard settings
  networking.firewall = {
   # if packets are still dropped, they will show up in dmesg
   logReversePathDrops = true;
   # wireguard trips rpfilter up
   extraCommands = ''
     ip46tables -t mangle -I nixos-fw-rpfilter -p udp -m udp --sport 51820 -j RETURN
     ip46tables -t mangle -I nixos-fw-rpfilter -p udp -m udp --dport 51820 -j RETURN
   '';
   extraStopCommands = ''
     ip46tables -t mangle -D nixos-fw-rpfilter -p udp -m udp --sport 51820 -j RETURN || true
     ip46tables -t mangle -D nixos-fw-rpfilter -p udp -m udp --dport 51820 -j RETURN || true
   '';
  };

  # Enable fstrim
  services.fstrim.enable = true;
    
  # Enable ratbagd for mice configuration
  services.ratbagd.enable = true;

  # Setup syncthing
  services = {
    syncthing = {
      enable = true;
      user = "crony";
      dataDir = "/home/crony/.local/sync";
      configDir = "/home/crony/.config/syncthing";
    };
  };

  # Setting up zsh
  programs.zsh.enable = true;

  # For the completion plugin
  environment.pathsToLink = [ "/share/zsh" ];

  # Defining my user
  users.users.crony = {
    isNormalUser = true;
    description = "Crony";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [
      (retroarch.override {
        cores = with libretro; [
          snes9x
        ];
      })
    ];
    shell = pkgs.zsh;
  };

  # Enable home manager for my user
  home-manager = {
    useGlobalPkgs = true;
    extraSpecialArgs = {inherit inputs;};
    users = {
      "crony" = import ./home.nix;
    };
  };

  # Allow appimages to run manually
  boot.binfmt.registrations.appimage = {
    wrapInterpreterInShell = false;
    interpreter = "${pkgs.appimage-run}/bin/appimage-run";
    recognitionType = "magic";
    offset = 0;
    mask = ''\xff\xff\xff\xff\x00\x00\x00\x00\xff\xff\xff'';
    magicOrExtension = ''\x7fELF....AI\x02'';
  };

  # Automatic cleanup and optimization
  nix.optimise.automatic = true;
  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 15d";
  };

  # DO NOT CHANGE
  system.stateVersion = "23.11";

}