fixup! coupling module

src/language/modules/CouplageModule.cpp

@@ -46,14 +46,16 @@ CouplageModule::CouplageModule()
                                         auto nFaces = p_mesh->numberOfFaces();
                                         std::cout << "n faces: " << nFaces << std::endl;
                                         const auto nodes = p_mesh->xr();
+#ifdef PUGS_HAS_MPI
+
                                         if (CommunicatorManager::hasSplitColor()) {
                                           std::cout << "\033[01;31m"
                                                     << "COUPLED"
                                                     << "\033[00;00m" << std::endl;
-
                                           auto COMM_WORLD = parallel::Messenger::getInstance().globalComm();
                                           auto COMM_LOCAL = parallel::Messenger::getInstance().comm();
                                         }
+#endif   // PUGS_HAS_MPI
                                       }
 
                                       ));