diff --git a/modules/nixos/workflows/mosey-branch/default.nix b/modules/nixos/workflows/mosey-branch/default.nix
index d1c390c8..03ff7830 100644
--- a/modules/nixos/workflows/mosey-branch/default.nix
+++ b/modules/nixos/workflows/mosey-branch/default.nix
@@ -110,6 +110,8 @@ in
         tangram # Make yourself a professional social media manager.
       ];
     };
+
+    debug = lib.mkEnableOption "gnome-session debug messages";
   };
 
   config = lib.mkIf cfg.enable (lib.mkMerge [
@@ -117,6 +119,8 @@ in
       environment.systemPackages = cfg.extraApps ++ requiredPackages;
       systemd.packages = [ customDesktopSession ];
 
+      environment.sessionVariables.GNOME_SESSION_DEBUG = lib.mkIf cfg.debug "1";
+
       # Our preferred display manager.
       services.xserver = {
         enable = true;