fix: harden Wayland compositor runtime checks

src/cthulhu/compositor_state_wayland.py

@@ -17,6 +17,7 @@ from typing import Any
 
 from gi.repository import GLib
 
+from . import debug
 from .compositor_state_types import (
     DESKTOP_TRANSITION_FINISHED,
     DESKTOP_TRANSITION_STARTED,
@@ -98,7 +99,9 @@ class WaylandSharedProtocolsBackend:
             self._bind_listener(self._registry, "global_remove", self._handle_registry_global_remove)
             self._roundtrip()
             self._install_dispatch_watch()
-        except Exception:
+        except Exception as error:
+            msg = f"COMPOSITOR STATE: Wayland backend activation failed: {error}"
+            debug.printMessage(debug.LEVEL_WARNING, msg, True)
             self.deactivate()
 
     def deactivate(self, emit_signal: Any = None) -> None: