{
  config,
  pkgs,
  lib,
  inputs,
  ...
}: {
  # Bootloader.
  boot.loader.systemd-boot = {
    enable = true;
    configurationLimit = 10;
  };
  boot.loader.efi.canTouchEfiVariables = true;

  # Garbage collection
  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 1w";
  };

  # Optimize store
  nix.settings.auto-optimise-store = true;

  # Use latest stable kernel
  boot.kernelPackages = pkgs.linuxPackages_latest;

  # Allow power management
  powerManagement.enable = true;

  # Firmware updates
  services.fwupd.enable = true;

  # Enable networking
  networking.networkmanager.enable = true;

  # Enable Bluetooth
  hardware.bluetooth.enable = true;

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

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

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

  # Enable the KDE Plasma Desktop Environment.
  services.xserver.enable = true;
  services.displayManager.sddm = {
    enable = true;
    extraPackages = [pkgs.kdePackages.sddm-kcm];
    wayland.enable = true;
    enableHidpi = true;
  };

  services.desktopManager.plasma6.enable = true;
  environment.plasma6.excludePackages = with pkgs.kdePackages; [
    elisa
    kate
  ];

  # Cachix for Hyprland
  nix.settings = {
    substituters = ["https://hyprland.cachix.org"];
    trusted-substituters = ["https://hyprland.cachix.org"];
    trusted-public-keys = ["hyprland.cachix.org-1:a7pgxzMz7+chwVL3/pzj6jIBMioiJM7ypFP8PwtkuGc="];
  };

  # Hyprland
  programs.hyprland = {
    enable = true;
    package = inputs.hyprland.packages.${pkgs.stdenv.hostPlatform.system}.hyprland;
    portalPackage = inputs.hyprland.packages.${pkgs.stdenv.hostPlatform.system}.xdg-desktop-portal-hyprland;
  };

  # Catppuccin
  catppuccin = {
    enable = true;
    flavor = "mocha";
    sddm = {
      enable = true;
      background = "/home/chase/nixos-config/home/wallpaper.jpg";
      flavor = "mocha";
      font = "IBM Plex Sans";
      fontSize = "11";
    };
  };

  # Enable graphics acceleration and AMDVLK
  hardware.graphics = {
    enable = true;
    enable32Bit = true;
    extraPackages = with pkgs; [
      amdvlk
    ];
    extraPackages32 = with pkgs; [
      driversi686Linux.amdvlk
    ];
  };

  # Configure keymap
  console.keyMap = "jp106";

  services.xserver.xkb = {
    layout = lib.mkDefault "jp";
    model = "jp106";
  };

  i18n.inputMethod = {
    type = "fcitx5";
    enable = true;
    fcitx5.addons = with pkgs; [
      fcitx5-mozc
      kdePackages.fcitx5-qt
    ];
    fcitx5.waylandFrontend = true;
  };

  # Fonts
  fonts = {
    packages = with pkgs; [
      ibm-plex
      liberation_ttf
      nerd-fonts.blex-mono
      noto-fonts
      noto-fonts-cjk-sans
      noto-fonts-emoji
    ];
    fontconfig = {
      defaultFonts = {
        serif = ["IBM Plex Serif"];
        sansSerif = ["IBM Plex Sans"];
        monospace = ["BlexMono Nerd Font"];
      };
    };
  };

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

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

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

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

  # Bash config
  programs.bash = {
    blesh.enable = true;
  };

  # Define a user account
  users.users.chase = {
    isNormalUser = true;
    description = "Chase";
    extraGroups = ["networkmanager" "wheel"];
  };

  # Install firefox
  programs.firefox = {
    enable = true;
    nativeMessagingHosts.packages = [pkgs.firefoxpwa];
    policies = {
      DisableTelemetry = true;
      DisableFirefoxAccounts = true;
      DisableFirefoxStudies = true;
      DisablePocket = true;
    };
  };

  # Install git and enable cache
  programs.git = {
    enable = true;
    config = {
      init = {
        defaultBranch = "main";
      };
      credential = {
        helper = "cache --timeout 21600";
      };
    };
  };

  # Install Neovim
  programs.neovim = {
    enable = true;
    defaultEditor = true;
    configure = {
      customRC = ''
        set autoindent
        set number relativenumber
        set tabstop=4
        colorscheme catppuccin-mocha
      '';
      packages.myVimPackage = with pkgs.vimPlugins; {
        start = [catppuccin-nvim];
      };
    };
    viAlias = true;
    vimAlias = true;
  };

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

  # List packages installed in system profile.
  environment.systemPackages = with pkgs; [
    alejandra
    bitwarden-cli
    bitwarden-desktop
    (catppuccin-kde.override {
      flavour = ["mocha"];
      accents = [
        "blue"
        "lavender"
        "pink"
        "sapphire"
      ];
      winDecStyles = ["classic"];
    })
    cifs-utils
    firefoxpwa
    flashrom
    gcc
    nixd
    pciutils
    python3
    qemu
    rustup
    usbutils
    wget
  ];

  nix.nixPath = ["nixpkgs=${inputs.nixpkgs}"];

  # ssh agent
  # programs.mtr.enable = true;
  programs.gnupg.agent.enable = true;

  programs.ssh = {
    enableAskPassword = false;
  };

  # List services that you want to enable:

  services.fprintd.enable = true;

  # security.polkit.enable = true;

  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    settings = {
      PermitRootLogin = "no";
      PasswordAuthentication = false;
      KbdInteractiveAuthentication = false;
    };
  };

  # Open ports in the firewall.
  # networking.firewall.allowedTCPPorts = [ ... ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # 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 = "24.11"; # Did you read the comment?
}