{
  lib,
  pkgs,
  ...
}:
with lib; {
  imports = [../home.nix];

  # Run electron apps under wayland.
  home.sessionVariables.NIXOS_OZONE_WL = "1";

  # Theme QT applications
  qt = {
    enable = true;
    platformTheme.name = "adwaita";
    style.name = "adwaita-dark";
  };

  # Allow fontconfig to discover fonts.
  fonts.fontconfig.enable = true;

  # dconf settings
  dconf = {
    enable = true;
    settings = {
      # Gnome settings.
      "org/gnome/desktop/interface" = {
        accent-color = "green";
        clock-show-seconds = true;
        clock-show-weekday = true;
        color-scheme = "prefer-dark";
        enable-hot-corners = false;
        show-battery-percentage = true;
      };

      "org/gnome/desktop/background" = let
        wallpaper = pkgs.copyPathToStore ./wallpaper.jpg;
      in {
        picture-uri = wallpaper;
        picture-uri-dark = wallpaper;
      };

      "org/gnome/shell" = {
        favorite-apps = gvariant.mkEmptyArray (gvariant.type.string);
        enabled-extensions = with pkgs; [
          gnomeExtensions.adw-gtk3-colorizer.extensionUuid
          gnomeExtensions.alphabetical-app-grid.extensionUuid
          gnomeExtensions.auto-move-windows.extensionUuid
          gnomeExtensions.caffeine.extensionUuid
          gnomeExtensions.color-picker.extensionUuid
          gnomeExtensions.rounded-window-corners-reborn.extensionUuid
          gnomeExtensions.smile-complementary-extension.extensionUuid
        ];
      };

      "org/gnome/desktop/preferences" = {
        num-workspaces = gvariant.mkInt32 4;
      };

      "org/gnome/mutter" = {
        dynamic-workspaces = false;
        experimental-features = [
          "scale-monitor-framebuffer" # Enables fractional scaling (125% 150% 175%)
          "xwayland-native-scaling" # Scales Xwayland applications to look crisp on HiDPI screens
        ];
      };

      "org/gnome/settings-daemon/plugins/color" = {
        night-light-enabled = true;
        night-light-schedule-automatic = false;
      };

      "org/gnome/desktop/peripherals/touchpad" = {
        natural-scroll = false;
        two-finger-scrolling-enabled = true;
      };

      "org/gnome/desktop/wm/keybindings" = {
        close = ["<Super>q"];
        move-to-workspace-1 = ["<Shift><Super>1"];
        move-to-workspace-2 = ["<Shift><Super>2"];
        move-to-workspace-3 = ["<Shift><Super>3"];
        move-to-workspace-4 = ["<Shift><Super>4"];
        switch-to-workspace-1 = ["<Super>1"];
        switch-to-workspace-2 = ["<Super>2"];
        switch-to-workspace-3 = ["<Super>3"];
        switch-to-workspace-4 = ["<Super>4"];
        toggle-maximized = ["<Super>f"];
      };

      "org/gnome/settings-daemon/plugins/media-keys" = {
        custom-keybindings = [
          "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/"
          "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1/"
          "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom2/"
        ];
      };

      "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0" = {
        name = "Open Emoji Picker";
        command = "smile";
        binding = "<Super>period";
      };

      "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1" = {
        name = "Open Terminal";
        command = "ghostty";
        binding = "<Super>Return";
      };

      "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom2" = {
        name = "Open Files";
        command = "nautilus";
        binding = "<Super>e";
      };

      # Applications.
      "io/github/Foldex/AdwSteamGtk" = {
        color-theme-options = "Adwaita";
        hide-whats-new-switch = false;
        library-sidebar-options = "Show";
        login-qr-options = "Show";
        no-rounded-corners-switch = false;
        prefs-beta-support = false;
        window-controls-layout-options = "Auto";
        window-controls-options = "Adwaita";
      };

      # Extensions.
      "org/gnome/shell/extensions/auto-move-windows" = {
        application-list = ["Fluffychat.desktop:2" "signal.desktop:2" "proton-mail.desktop:2" "feishin.desktop:3" "org.prismlauncher.PrismLauncher.desktop:4" "steam.desktop:4" "discord.desktop:2"];
      };

      "org/gnome/shell/extensions/alphabetical-app-grid" = {
        folder-order-position = "start";
      };

      "org/gnome/shell/extensions/caffeine" = {
        enable-fullscreen = false;
        enable-mpris = false;
        indicator-position = gvariant.mkInt32 0;
        indicator-position-index = gvariant.mkInt32 0;
        indicator-position-max = gvariant.mkInt32 4;
        restore-state = false;
        show-indicator = "only-active";
      };

      "org/gnome/shell/extensions/color-picker" = {
        enable-notify = false;
        enable-preview = true;
        enable-shortcut = true;
        enable-sound = false;
        enable-systray = false;
        persistent-mode = false;
      };
    };
  };

  # Autostart.
  xdg.autostart = {
    enable = true;
    readOnly = true;
    entries = let
      smile = pkgs.writeText "smile.desktop" ''
        [Desktop Entry]
        Type=Application
        Name=it.mijorus.smile
        X-XDP-Autostart=it.mijorus.smile
        Exec=smile --start-hidden
      '';
    in [
      smile
      "${pkgs.fluffychat}/share/applications/Fluffychat.desktop"
      "${pkgs.feishin}/share/applications/feishin.desktop"
      "${pkgs.protonmail-desktop}/share/applications/proton-mail.desktop"
      "${pkgs.signal-desktop}/share/applications/signal.desktop"
    ];
  };

  # Install some packages.
  home.packages = with pkgs; [
    # Gnome.
    adw-gtk3
    adwsteamgtk
    gnome-tweaks
    gnomeExtensions.adw-gtk3-colorizer
    gnomeExtensions.alphabetical-app-grid
    gnomeExtensions.auto-move-windows
    gnomeExtensions.caffeine
    gnomeExtensions.color-picker
    gnomeExtensions.rounded-window-corners-reborn
    gnomeExtensions.smile-complementary-extension

    # Fonts.
    merriweather
    iosevka

    # Dictionary & spellcheck.
    hunspell
    hunspellDicts.en_AU

    # Software.
    blender
    caligula
    celluloid
    deploy-rs
    feishin
    fluffychat
    fusee-nano
    gimp3
    glabels-qt
    inkscape
    jellyfin-media-player
    libreoffice
    minipro
    naps2
    ns-usbloader
    obsidian
    orca-slicer
    papers
    prismlauncher
    protonmail-desktop
    rockbox-utility
    rpi-imager
    signal-desktop
    smile
    via
    webcord
    yubioath-flutter
  ];

  # Install and configure software.
  services.nextcloud-client = {
    enable = true;
    startInBackground = true;
  };

  programs = {
    ghostty = {
      enable = true;
      settings = {
        font-family = "IosevkaCustom";
        theme = "Kanagawa Dragon";
      };
    };

    firefox = {
      enable = true;
      package = pkgs.librewolf;
      profiles.default = {};
      profiles.default.settings."identity.sync.tokenserver.uri" = "https://fxsync.fern.garden/1.0/sync/1.5";
    };
  };
}