{ config, pkgs, ... }:

{
  # programs.ibus.enable = true;
  # programs.ibus.plugins = [ pkgs.ibus-anthy pkgs.mozc ];
  i18n.inputMethod = {
    enabled = "fcitx";
    fcitx.engines = with pkgs.fcitx-engines; [ mozc anthy table-other m17n ];
  };

  environment.systemPackages = with pkgs; with gnome3; [
    i3status
    rofi
    rofi-pass
    feh
    gnome_keyring
    networkmanagerapplet
    nautilus # in closure of gnome-terminal anyhow
    pcmanfm
    # colord
    evince
    grim
    mako
    pavucontrol
    dconf-editor

    xdg_utils # for xdg-open

    # gnome3 core packages
    desktop_file_utils shared_mime_info
    glib gtk3
    glib_networking gvfs dconf
    gnome_settings_daemon
    gnome_themes_standard defaultIconTheme
    hicolor_icon_theme

    # for QT_QPA_PLATFORM=wayland
    qt5.qtwayland

    wdisplays

    (pkgs.writeScriptBin "gsd-xsettings"
      ''
        #!/bin/sh
        exec ${pkgs.gnome3.gnome-settings-daemon}/libexec/gsd-xsettings "$@"
      '')
  ];

  nixpkgs.config.packageOverrides = pkgs: with pkgs; {
    firefox = firefox-wayland;
  };

  fonts = {
    enableDefaultFonts = false;
    fonts = with pkgs; [
      xorg.fontbhlucidatypewriter100dpi
      xorg.fontbhlucidatypewriter75dpi
      dejavu_fonts
      freefont_ttf
      gyre-fonts # TrueType substitutes for standard PostScript fonts
      liberation_ttf
      xorg.fontbh100dpi
      xorg.fontmiscmisc
      xorg.fontcursormisc
      # unifont

      wqy_microhei
      inconsolata
      dejavu_fonts
      ipafont
      ipaexfont
      ubuntu_font_family
      source-code-pro
      fira fira-mono fira-code
      noto-fonts-emoji
      noto-fonts-cjk

      cantarell_fonts # from gnome3 module
    ];
  };

  # prevent satanic torture
  programs.qt5ct.enable = true;

  programs.sway = {
    enable = true;

    extraSessionCommands = ''
      if [ ! "$DBUS_SESSION_BUS_ADDRESS" ]; then
        exec ${pkgs.dbus}/bin/dbus-run-session "$0" "$@"
      fi
      export DBUS_SESSION_BUS_ADDRESS

      export SDL_VIDEODRIVER=wayland
      export QT_QPA_PLATFORM=wayland
      export QT_WAYLAND_DISABLE_WINDOWDECORATION=1

      # Fix for some Java AWT applications (e.g. Android Studio),
      # use this if they aren't displayed properly:
      export _JAVA_AWT_WM_NONREPARENTING=1

      # rust winit's wayland support is broken for input methods
      export WINIT_UNIX_BACKEND=x11

      export XDG_DATA_DIRS=/run/current-system/sw/share/''${XDG_DATA_DIRS:+:}$XDG_DATA_DIRS
      export $(${pkgs.gnome3.gnome_keyring}/bin/gnome-keyring-daemon --start --components=pkcs11,secrets,ssh,gpg)
      export XDG_CURRENT_DESKTOP=X-Generic
    '';
  };

  services.xserver = {
    enable = true;
    libinput.enable = true;
    displayManager.lightdm.enable = true;
    displayManager.defaultSession = "sway";
  };

  users.extraUsers.gebner.extraGroups = [ "input" "tty" "audio" "video" ];

    # layout = "us";
    # xkbVariant = "altgr-intl";
    # xkbOptions = "caps:ctrl_modifier";

  services.dbus.packages = with pkgs; [ mako gnome3.gcr ];
  services.udev.packages = [ pkgs.gnome3.gnome-settings-daemon ];

  # copied from gnome3 module
  security.polkit.enable = true;
  services.udisks2.enable = true;
  services.accounts-daemon.enable = true;
  services.geoclue2.enable = true;
  services.gnome3.at-spi2-core.enable = true;
  services.gnome3.gnome-keyring.enable = true;
  services.gvfs.enable = true;
  programs.seahorse.enable = true;
  services.gnome3.sushi.enable = true;
  services.gnome3.gnome-settings-daemon.enable = true;
  services.telepathy.enable = true;
  networking.networkmanager.enable = true;
  services.upower.enable = config.powerManagement.enable;
  programs.dconf.enable = true;
  services.flatpak.enable = true;
  xdg.portal = {
    enable = true;
    extraPortals = [ pkgs.xdg-desktop-portal-gtk ];
  };
  # Needed for themes and backgrounds
  environment.pathsToLink = [ "/share" ];
  environment.variables.GIO_EXTRA_MODULES = with pkgs.gnome3; [
    "${pkgs.lib.getLib dconf}/lib/gio/modules"
    "${glib_networking.out}/lib/gio/modules"
    "${gvfs}/lib/gio/modules" ];

  hardware.bluetooth = {
    enable = true;
    package = pkgs.bluezFull;
  };
  services.blueman.enable = true;

  hardware.pulseaudio = {
    enable = true;
    zeroconf.discovery.enable = true;
    daemon.config = {
      flat-volumes = "no";
      avoid-resampling = "yes";
      resample-method = "speex-float-10";
      default-sample-format = "s32le";
      default-sample-rate = "96000";
    };
    package = pkgs.pulseaudioFull;
    extraModules = [ pkgs.pulseaudio-modules-bt ];
  };

  programs.gnupg = {
    agent.enable = true;
    agent.pinentryFlavor = "gnome3";
  };

}