Stop trying to exclude qcodes from Spyder UMR

docs/changes/newsfragments/6647.breaking

@@ -0,0 +1,5 @@
+QCoDeS no longer attempts to automatically disable Sypders User module reloader (UMR).
+The code was no longer working correctly with the latest version of Spyder and is not
+maintainable since Spyder does not have a public api to disable UMR. If you use
+QCoDeS from an editable install it is strongly recommended to disable UMR for QCoDeS.
+See :ref:`gettingstarted` for more details.

docs/start/index.rst

@@ -248,6 +248,17 @@ or jupyter lab:
 
     jupyter lab
 
+.. note::
+
+    Note that Spyder ships with functionality to automatically reload modules that are installed
+    editable. This functionality called
+    `User Module Reloader <https://docs.spyder-ide.org/current/panes/ipythonconsole.html#reload-changed-modules>`__
+    is known to not work well with QCoDeS. If you install QCoDeS editable (with -e flag)
+    we strongly recommend users to exclude QCoDeS from UMR. QCoDeS used to attempt to automatically
+    disable this feature. However, as `Spyder does not provide a public API for doing this <https://github.com/spyder-ide/spyder/issues/2451>`__
+    this relied on a private API in Spyder and broke with the last Spyder release.
+    If at some point this becomes possible to do with a public API QCoDeS may again disable this automatically.
+
 For other options from the terminal you can activate the QCoDeS in that terminal
 then start any other application, such as *IPython* or
 just plain old *Python*.

src/qcodes/__init__.py

@@ -16,7 +16,6 @@
 import qcodes.configuration as qcconfig
 from qcodes.logger.logger import conditionally_start_all_logging
 from qcodes.utils import QCoDeSDeprecationWarning
-from qcodes.utils.spyder_utils import add_to_spyder_UMR_excludelist
 
 __version__ = qcodes._version.__version__
 
@@ -25,11 +24,6 @@
 
 conditionally_start_all_logging()
 
-# we dont want spyder to reload qcodes as this will overwrite the default station
-# instrument list and running monitor
-add_to_spyder_UMR_excludelist("qcodes")
-
-
 import atexit
 
 import qcodes.validators

src/qcodes/utils/helpers.py

@@ -32,7 +32,9 @@
 from .json_utils import NumpyJSONEncoder
 from .partial_utils import partial_with_docstring
 from .path_helpers import QCODES_USER_PATH_ENV, get_qcodes_path, get_qcodes_user_path
-from .spyder_utils import add_to_spyder_UMR_excludelist
+from .spyder_utils import (
+    add_to_spyder_UMR_excludelist,  # pyright: ignore[reportDeprecated]
+)
 
 
 # on longer in used but left for backwards compatibility until

src/qcodes/utils/spyder_utils.py

@@ -1,9 +1,17 @@
 import logging
 import os
 
+from typing_extensions import deprecated
+
+from qcodes.utils.deprecate import QCoDeSDeprecationWarning
+
 _LOG = logging.getLogger(__name__)
 
 
+@deprecated(
+    "Known to not work with latest Spyder and unused in QCoDeS",
+    category=QCoDeSDeprecationWarning,
+)
 def add_to_spyder_UMR_excludelist(modulename: str) -> None:
     """
     Spyder tries to reload any user module. This does not work well for