nixos/services/desktop/sway.nix

{
  config,
  lib,
  pkgs,
  ...
}:
with lib;
  mkIf (elem "desktop::sway" config.machine.services) {
    programs.sway = {
      enable = true;
      package = pkgs.sway.override {
        enableXWayland = true;
      };
      extraPackages = with pkgs; [
        file
        i3status
        dmenu
        qt5.qtwayland
        grim
        slurp
        swaylock
        swayidle
        light
        mako
        wl-clipboard
        wf-recorder
      ];
      wrapperFeatures = {
        base = true;
        gtk = true;
      };
      extraSessionCommands = ''
        export GDK_BACKEND=wayland
        export CLUTTER_BACKEND=wayland
        export SDL_VIDEODRIVER=wayland
        # needs qt5.qtwayland in systemPackages
        export QT_QPA_PLATFORM=wayland-egl
        export QT_WAYLAND_FORCE_DPI=physical
        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
        # Chromium (based) applications
        export NIXOS_OZONE_WL=1
      '';
    };
  }