Put this before.

CMakeLists.txt

@@ -157,6 +157,7 @@ elseif(${CMAKE_SYSTEM_NAME} MATCHES Darwin)
     set(CPACK_IFW_TARGET_DIRECTORY "@HomeDir@/Applications/${COMPONENT_NAME_MAIN}")
     set(CPACK_BUNDLE_NAME ${COMPONENT_NAME_MAIN})
     set(CPACK_BUNDLE_ICON "${CMAKE_CURRENT_SOURCE_DIR}/icons/favicon.icns")
+    set(CPACK_IFW_PACKAGE_SIGNING_IDENTITY "Developer ID Application: Nomic, Inc (PA) (6P9A8WD2QJ)")
 endif()
 
 set(CPACK_PACKAGE_INSTALL_DIRECTORY ${COMPONENT_NAME_MAIN})
@@ -204,7 +205,6 @@ else()
       cpack_ifw_add_repository("GPT4AllRepository" URL "https://gpt4all.io/installer_repos/windows/repository")
     endif()
   elseif(${CMAKE_SYSTEM_NAME} MATCHES Darwin)
-    CPACK_IFW_PACKAGE_SIGNING_IDENTITY("Developer ID Application: Nomic, Inc (PA) (6P9A8WD2QJ)")
     if (GPT4ALL_AVX_ONLY)
       cpack_ifw_add_repository("GPT4AllRepository" URL "https://gpt4all.io/installer_repos/avx_only/mac/repository")
     else()