def update-gsettings [is_dark: bool] {
   let scheme = if $is_dark { "prefer-dark" } else { "default" }
   try { dconf write /org/gnome/desktop/interface/color-scheme $"'($scheme)'" }
}

   update-gsettings ($theme == dark)

      commonGtk = # ini

      # Color scheme for gsettings (prefer-dark, default, prefer-light)
      colorScheme = if theme.isDark then "prefer-dark" else "default";
      gtkCommon = # ini

          gtk-prefer-dark=${toString theme.isDark}

      settingsGtk2 = commonGtk;

      gtk2 = # ini
        ''
          gtk-font-name="${theme.font.sans.name} ${toString theme.font.size.normal}"
          gtk-theme-name="${theme.gtk.name}"
          gtk-icon-theme-name="${theme.icons.name}"
        '';

      settingsGtk3 = # ini

      gtk3 = # ini
        ''
          [Settings]
          gtk-application-prefer-dark-theme=${if theme.isDark then "true" else "false"}
          ${gtkCommon}
        '';
      gtk4 = # ini

          ${commonGtk}

          gtk-application-prefer-dark-theme=${if theme.isDark then "true" else "false"}
          gtk-interface-color-scheme=${if theme.isDark then "2" else "3"}
          ${gtkCommon}

      programs.dconf.enable = true;

      programs.dconf = {
        enable = true;
        profiles.user.databases = singleton {
          settings."org/gnome/desktop/interface".color-scheme = colorScheme;
        };
      };

        files.".gtkrc-2.0".text = settingsGtk2;
        xdg.config.files."gtk-3.0/settings.ini".text = settingsGtk3;
        xdg.config.files."gtk-4.0/settings.ini".text = settingsGtk3;

        files.".gtkrc-2.0".text = gtk2;
        xdg.config.files."gtk-3.0/settings.ini".text = gtk3;
        xdg.config.files."gtk-4.0/settings.ini".text = gtk4;

        # Disable rounded corners in GTK

        # Disable rounded windows.

            * {

            window {

            * {

            window {