[_686] independent computation of irodsA path

Author: d-w-moore

irods/__init__.py

@@ -29,9 +29,7 @@ def env_filename_from_keyword_args(kwargs):
 def derived_auth_filename(env_filename):
     if not env_filename:
         return ""
-    default_irods_authentication_file = os.path.join(
-        os.path.dirname(env_filename), ".irodsA"
-    )
+    default_irods_authentication_file = os.path.expanduser("~/.irods/.irodsA")
     return os.environ.get(
         "IRODS_AUTHENTICATION_FILE", default_irods_authentication_file
     )