nixpkgs/pkgs/applications/virtualization/appvm/0004-Use-title-application-name-as-subtitle.patch

diff --git a/src/virt-viewer-app.c b/src/virt-viewer-app.c
index b977b7b..36bce34 100644
--- a/src/virt-viewer-app.c
+++ b/src/virt-viewer-app.c
@@ -976,6 +976,7 @@ virt_viewer_app_set_window_subtitle(VirtViewerApp *app,
             *d = '%';
         } else
             subtitle = g_strdup_printf("%s (%s)", title, desc);
+	subtitle = g_strdup_printf("%s", title);
         g_free(desc);
     }