From 823778d9f6e378884d0f24e07660015f98ac03fd Mon Sep 17 00:00:00 2001
From: Kai Muehlbauer <kai.muehlbauer@uni-bonn.de>
Date: Tue, 9 Nov 2021 14:58:51 +0100
Subject: [PATCH] WIP: remove stale code, add whats-new.rst entry

---
 doc/whats-new.rst            | 6 ++++++
 xarray/tests/test_plugins.py | 1 -
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/doc/whats-new.rst b/doc/whats-new.rst
index f499cbe3d21..b66c99d0bcb 100644
--- a/doc/whats-new.rst
+++ b/doc/whats-new.rst
@@ -36,6 +36,8 @@ Bug fixes
 ~~~~~~~~~
 - Fix plot.line crash for data of shape ``(1, N)`` in _title_for_slice on format_item (:pull:`5948`).
   By `Sebastian Weigand <https://github.com/s-weigand>`_.
+- Fix a regression in the removal of duplicate backend entrypoints (:issue:`5944`, :pull:`5959`)
+  By `Kai Mühlbauer <https://github.com/kmuehlbauer>`_.
 
 Documentation
 ~~~~~~~~~~~~~
@@ -49,6 +51,10 @@ Documentation
 Internal Changes
 ~~~~~~~~~~~~~~~~
 
+- Use ``importlib`` to replace functionality of ``pkg_resources`` in
+  backend plugins tests. (:pull:`5959`).
+  By `Kai Mühlbauer <https://github.com/kmuehlbauer>`_.
+
 
 .. _whats-new.0.20.1:
 
diff --git a/xarray/tests/test_plugins.py b/xarray/tests/test_plugins.py
index 6fe865a91e4..086beba97f8 100644
--- a/xarray/tests/test_plugins.py
+++ b/xarray/tests/test_plugins.py
@@ -49,7 +49,6 @@ def dummy_duplicated_entrypoints():
 
 @pytest.mark.filterwarnings("ignore:Found")
 def test_remove_duplicates(dummy_duplicated_entrypoints) -> None:
-    entrypoints = plugins.remove_duplicates(dummy_duplicated_entrypoints)
     with pytest.warns(RuntimeWarning):
         entrypoints = plugins.remove_duplicates(dummy_duplicated_entrypoints)
     assert len(entrypoints) == 2