Hopefully, allow GitHub to build wlroots with the XWayland backend

.build.yml

@@ -1,20 +1,27 @@
 image: archlinux
 packages:
-    # Packages needed by Waybox
+    # Base packages needed
   - meson
   - wayland
   - wayland-protocols
   - libxkbcommon
+    # Packages needed by Waybox
   - libxml2
     # Packages needed for wlroots
   - mesa
-  - xorg-server-xwayland
-  - xcb-util-image
-  - libinput
   - libdrm
   - udev
   - pixman
   - seatd
+    # Packages needed for wlroots libinput backend
+  - libinput
+    # Packages needed for wlroots Xwayland support
+  - xorg-server-xwayland
+  - libxcb
+  - xcb-util-renderutil
+  - xcb-util-wm
+  - xcb-util-errors
+  - xcb-util-image
 sources:
   - https://github.com/wizbright/waybox
   - https://gitlab.freedesktop.org/wlroots/wlroots