I saw this traceback at runtime with dev-python/pillow-10.1.0: Traceback (most recent call last): File "/usr/lib/python3.10/site-packages/xpra/client/client_base.py", line 1150, in call_handler handler(packet) File "/usr/lib/python3.10/site-packages/xpra/client/mixins/window_manager.py", line 1074, in _process_window_icon img = self._window_icon_image(wid, w, h, coding, data) File "/usr/lib/python3.10/site-packages/xpra/client/mixins/window_manager.py", line 710, in _window_icon_image icon_resized = icon.resize((shrunk_width, shrunk_height), Image.ANTIALIAS) According to https://github.com/Xpra-org/xpra/issues/3914 x11-wm/xpra-4.4.6-r2 would need <dev-python/pillow-10 unless patched as of today.
PS: I should note that dev-python/pillow-10.0.1 is the oldest pillow in Gentoo today, there is no v9 left as of today.