{
  pkgs,
  lib,
  ...
}: {
  ### home-manager
  home-manager.users.guanranwang = import ./home;

  # plymouth
  #boot.plymouth.enable = true;

  # xserver
  services.xserver = {
    enable = true;
    excludePackages = with pkgs; [xterm];
    displayManager.startx.enable = true;
  };

  # gnome keyring
  programs.seahorse.enable = true;

  # polkit
  security.polkit.enable = true;
  environment.systemPackages = with pkgs; [polkit_gnome];
  systemd.user.services.polkit-gnome-authentication-agent-1 = {
    description = "polkit-gnome-authentication-agent-1";
    wantedBy = ["graphical-session.target"];
    wants = ["graphical-session.target"];
    after = ["graphical-session.target"];
    serviceConfig = {
      Type = "simple";
      ExecStart = "${pkgs.polkit_gnome}/libexec/polkit-gnome-authentication-agent-1";
      Restart = "on-failure";
      RestartSec = 1;
      TimeoutStopSec = 10;
    };
  };

  ### Options
  myFlake.boot.noLoaderMenu = lib.mkDefault true;

  fonts.enableDefaultPackages = false;
  security.pam.services.swaylock = {};
  xdg.portal = {
    enable = true;
    wlr.enable = true;
    extraPortals = with pkgs; [xdg-desktop-portal-gtk];
    config = {
      # from Arch Linux
      # https://gitlab.archlinux.org/archlinux/packaging/packages/sway/-/blob/main/sway-portals.conf
      sway = {
        default = "gtk";
        "org.freedesktop.impl.portal.ScreenCast" = "wlr";
        "org.freedesktop.impl.portal.Screenshot" = "wlr";
      };
    };
  };
  services = {
    gvfs.enable = true;
    gnome = {
      gnome-keyring.enable = true;
      sushi.enable = true;
      gnome-online-accounts.enable = true;
    };
  };
  programs = {
    kdeconnect = {
      # enable = true;
      #package = pkgs.gnomeExtensions.gsconnect;
      package = pkgs.valent;
    };
  };
  services.xserver.libinput = {
    touchpad = {
      accelProfile = "flat";
      naturalScrolling = true;
      middleEmulation = false;
    };
    mouse = {
      accelProfile = "flat";
      naturalScrolling = true;
      middleEmulation = false;
    };
  };

  ### Removes debounce time
  # https://www.reddit.com/r/linux_gaming/comments/ku6gth
  environment.etc."libinput/local-overrides.quirks".text = ''
    [Never Debounce]
    MatchUdevType=mouse
    ModelBouncingKeys=1
  '';
}