Revert "Re-use ServerApp.config_file_paths for consistency (#715)" (#728)

Author: blink1073

jupyter_server/extension/application.py

@@ -162,11 +162,6 @@ class method. This method can be set as a entry_point in
     def _default_open_browser(self):
         return self.serverapp.config["ServerApp"].get("open_browser", True)
 
-    @property
-    def config_file_paths(self):
-        """Look on the same path as our parent for config files"""
-        return self.serverapp.config_file_paths
-
     # The extension name used to name the jupyter config
     # file, jupyter_{name}_config.
     # This should also match the jupyter subcommand used to launch

jupyter_server/serverapp.py

@@ -104,6 +104,7 @@
     base_flags,
     base_aliases,
 )
+from jupyter_core.paths import jupyter_config_path
 from jupyter_client import KernelManager
 from jupyter_client.kernelspec import KernelSpecManager
 from jupyter_client.session import Session
@@ -2153,7 +2154,11 @@ def find_server_extensions(self):
         # This enables merging on keys, which we want for extension enabling.
         # Regular config loading only merges at the class level,
         # so each level clobbers the previous.
-        manager = ExtensionConfigManager(read_config_path=self.config_file_paths)
+        config_paths = jupyter_config_path()
+        if self.config_dir not in config_paths:
+            # add self.config_dir to the front, if set manually
+            config_paths.insert(0, self.config_dir)
+        manager = ExtensionConfigManager(read_config_path=config_paths)
         extensions = manager.get_jpserver_extensions()
 
         for modulename, enabled in sorted(extensions.items()):