Switch to wayland and sway

lib/nixos/modules/sway.nix

@@ -0,0 +1,31 @@
+{ inputs, username, ... }:
+{ pkgs, ... }: {
+  services = {
+    xserver = {
+      displayManager = {
+        defaultSession = "sway";
+        sddm.enable = true;
+      };
+    };
+  };
+
+  programs.sway.enable = true;
+
+  xdg.portal = {
+    enable = true;
+    extraPortals = with pkgs; [ xdg-desktop-portal-gtk xdg-desktop-portal-wlr ];
+  };
+
+  home-manager.users.${username} = { pkgs, ... }: {
+    home.sessionVariables = {
+      MOZ_ENABLE_WAYLAND = "1";
+      MOZ_USE_XINPUT2 = "1";
+      QT_QPA_PLATFORM = "wayland";
+      SDL_VIDEODRIVER = "wayland";
+      XDG_CURRENT_DESKTOP = "sway";
+      XDG_SESSION_TYPE = "wayland";
+    };
+
+    home.packages = with pkgs; [ i3status wl-clipboard wofi ];
+  };
+}