swaync: disable debug, to un-break DND mode

i'm sick of G_MESSAGES_DEBUG breaking stuff. i must be parsing cli output that gets broken by that, somewhere

hosts/common/programs/swaynotificationcenter/default.nix

@@ -236,7 +236,10 @@ in
       depends = [ "sound" ]; #< TODO: else it will NEVER see the pulse socket in its sandbox
       partOf = [ "graphical-session" ];
 
-      command = "env G_MESSAGES_DEBUG=all swaync";
+      # N.B.: G_MESSAGES_DEBUG=all breaks DND mode:
+      #       messages are still hidden, but are not silent!
+      # command = "env G_MESSAGES_DEBUG=all SWAYNC_DEBUG=1 swaync";
+      command = "swaync";
       readiness.waitDbus = "org.freedesktop.Notifications";
     };
   };