configuration.nix

# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  lib,
  config,
  pkgs,
  ...
}: {
  # You can import other NixOS modules here
  imports = [
    # If you want to use modules from other flakes (such as nixos-hardware):
    # inputs.hardware.nixosModules.common-cpu-amd
    # inputs.hardware.nixosModules.common-ssd

    # You can also split up your configuration and import pieces of it here:
    # ./users.nix

    # Import your generated (nixos-generate-config) hardware configuration
    ./hardware-configuration.nix
  ];

  nixpkgs = {
    # You can add overlays here
    overlays = [
      # If you want to use overlays exported from other flakes:
      # neovim-nightly-overlay.overlays.default

      # Or define it inline, for example:
      # (final: prev: {
      #   hi = final.hello.overrideAttrs (oldAttrs: {
      #     patches = [ ./change-hello-to-hi.patch ];
      #   });
      # })
    ];
    # Configure your nixpkgs instance
    config = {
      allowUnfree = true;
    };
  };

  # This will add each flake input as a registry
  # To make nix3 commands consistent with your flake
  # nix.registry = (lib.mapAttrs (_: flake: {inherit flake;})) ((lib.filterAttrs (_: lib.isType "flake")) inputs);

  # This will additionally add your inputs to the system's legacy channels
  # Making legacy nix commands consistent as well, awesome!
  # nix.nixPath = ["/etc/nix/path"];
  # environment.etc =
  #   lib.mapAttrs'
  #   (name: value: {
  #     name = "nix/path/${name}";
  #    value.source = value.flake;
  #   })
  #   config.nix.registry;

  nix.settings = {
    # Enable flakes and new 'nix' command
    experimental-features = "nix-command flakes";
    # Deduplicate and optimize nix store
    auto-optimise-store = true;
  };

  # FIXME: Add the rest of your current configuration

  networking.hostName = "y540";
  boot.loader.systemd-boot.enable = true;
  networking.networkmanager.enable = true;
  # she was sudo girl, ama doas boy :(
  security.doas.enable = true;
  security.sudo.enable = false;
  security.doas.extraRules = [{
  users = ["anas"];
  # Optional, retains environment variables while running commands 
  # e.g. retains your NIX_PATH when applying your config
  keepEnv = true; 
  persist = true;  # Optional, only require password verification a single time
}];
# Swap on NixOS is set with the option swapDevices on /etc/nixos/hardware-configuration.nix. 
 swapDevices = [ {
  device = "/var/lib/swapfile";
    size = 16*1024;
  } ];
# Thunar
programs.thunar.enable = true;
# Touchpad
# The driver has many options (see: https://nixos.org/manual/nixos/stable/options).
services.xserver.libinput.enable = true;
# Proprietary NVIDIA drivers
services.xserver.videoDrivers = [ "nvidia" ];
# Enable OpenGL
  hardware.opengl = {
    enable = true;
    driSupport = true;
    driSupport32Bit = true;
  };

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

  hardware.nvidia = {

    # Modesetting is required.
    modesetting.enable = true;

    # Nvidia power management. Experimental, and can cause sleep/suspend to fail.
    # Enable this if you have graphical corruption issues or application crashes after waking
    # up from sleep. This fixes it by saving the entire VRAM memory to /tmp/ instead 
    # of just the bare essentials.
    powerManagement.enable = false;

    # Fine-grained power management. Turns off GPU when not in use.
    # Experimental and only works on modern Nvidia GPUs (Turing or newer).
    powerManagement.finegrained = false;

    # Use the NVidia open source kernel module (not to be confused with the
    # independent third-party "nouveau" open source driver).
    # Support is limited to the Turing and later architectures. Full list of 
    # supported GPUs is at: 
    # https://github.com/NVIDIA/open-gpu-kernel-modules#compatible-gpus 
    # Only available from driver 515.43.04+
    # Currently alpha-quality/buggy, so false is currently the recommended setting.
    open = false;

    # Enable the Nvidia settings menu,
	# accessible via `nvidia-settings`.
    nvidiaSettings = true;

    # Optionally, you may need to select the appropriate driver version for your specific GPU.
    package = config.boot.kernelPackages.nvidiaPackages.stable;
  };
 #  hardware.nvidia.prime = {
	# 	# Make sure to use the correct Bus ID values for your system!
	# 	intelBusId = "PCI:0:2:0";
	# 	nvidiaBusId = "PCI:14:0:0";
	# };
  # X11
#   services.xserver.enable = true;
#   services.xserver.xkb.layout = "us";
# services.xserver.xkb.variant = "dvorak-l";
#   services.xserver.windowManager.dwm.enable = true;
#   services.xserver.windowManager.dwm.package = pkgs.dwm.overrideAttrs {
#     src = pkgs.fetchFromGitHub {
#       owner = "archy-linux"; 
#       repo = "archy-dwm";
#       rev = "aurora";
#     };
#   };
services.xserver = {
  layout = "us,ara";
  xkbVariant = "dvorak-l,";
  xkbOptions = "grp:win_space_toggle caps:swapescape keypad:pointerkeys";
};

  programs.hyprland = {
    # Install the packages from nixpkgs
    enable = true;
    xwayland.enable = true;
    # Optional, hint electron apps to use wayland:
    environment.sessionVariables.NIXOS_OZONE_WL = "1";
  };

  # Fonts
  fonts.packages = with pkgs; [
    noto-fonts
    noto-fonts-cjk
    noto-fonts-emoji
    liberation_ttf
    fira-code
    fira-code-symbols
    mplus-outline-fonts.githubRelease
    dina-font
    proggyfonts
];

# Terminal Emulator
programs.foot.enable = true;
programs.foot.settings = {
  main = {
    term = "xterm-256color";

    font = "Fira Code:size=11";
    dpi-aware = "yes";
  };

  mouse = {
    hide-when-typing = "yes";
  };
}

  # TODO: Configure your system-wide user settings (groups, etc), add more users as needed.
  users.users = {
    anas = {
      # TODO: You can set an initial password for your user.
      # If you do, you can skip setting a root password by passing '--no-root-passwd' to nixos-install.
      # Be sure to change it (using passwd) after rebooting!
      initialPassword = "kill me plz";
      isNormalUser = true;
      openssh.authorizedKeys.keys = [
        # TODO: Add your SSH public key(s) here, if you plan on using SSH to connect
      ];
      # TODO: Be sure to add any other groups you need (such as networkmanager, audio, docker, etc)
      extraGroups = ["wheel" "audio" "video" "docker"];
    };
  };

    environment.systemPackages = with pkgs; [ 
      neovim
      docker
      git
      gnumake
      tmux
      btop
      wget
      neofetch
      nvtop
    ];

    environment.shells = with pkgs; [ zsh ];

   environment.variables = {
     EDITOR = "nvim";
     TERMINAL = "foot";
     PAGER = "less";
     SUDO = "doas";
    BROWSER="firefox";
    NAME = "Anas Elgarhy";
    USERNAME = "0x61nas";
    EMAIL = "[email protected]";
    # Globals
    TZ = "Africa/Cairo";
    # make less better
    # X = leave content on-screen
    # F = quit automatically if less than one screenfull
    # R = raw terminal characters (fixes git diff)
    #     see http://jugglingbits.wordpress.com/2010/03/24/a-better-less-playing-nice-with-git/
    LESS = "-F -X -R";
    # Rust stuff
    CARGO_INCREMENTAL = "1";
    RUSTFLAGS = "-C target-cpu=native";
    RUST_BACKTRACE = "1";
  };

  # This setups a SSH server. Very important if you're setting up a headless system.
  # Feel free to remove if you don't need it.
  services.openssh = {
    enable = true;
    settings = {
      # Forbid root login through SSH.
      PermitRootLogin = "no";
      # Use keys only. Remove if you want to SSH using password (not recommended)
      PasswordAuthentication = false;
    };
  };

  # TLP
  services.tlp = {
      enable = true;
      settings = {
        CPU_SCALING_GOVERNOR_ON_AC = "performance";
        CPU_SCALING_GOVERNOR_ON_BAT = "powersave";

        CPU_ENERGY_PERF_POLICY_ON_BAT = "power";
        CPU_ENERGY_PERF_POLICY_ON_AC = "performance";

        CPU_MIN_PERF_ON_AC = 0;
        CPU_MAX_PERF_ON_AC = 100;
        CPU_MIN_PERF_ON_BAT = 0;
        CPU_MAX_PERF_ON_BAT = 20;

       #Optional helps save long term battery health
       START_CHARGE_THRESH_BAT0 = 40; # 40 and bellow it starts to charge
       STOP_CHARGE_THRESH_BAT0 = 80; # 80 and above it stops charging

      };
  };

  # Thermald proactively prevents overheating on Intel CPUs and works well with other tools.
  services.thermald.enable = true; 
  powerManagement.enable = true;

  # Firewall
  networking.firewall.enable = true;
  networking.firewall.allowPing = false;

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "23.05";
}