1 files changed, 38 insertions, 0 deletions
diff --git a/dev-python/dask/files/dask-2021.10.0-warning.patch b/dev-python/dask/files/dask-2021.10.0-warning.patch
new file mode 100644
index 000000000000..87c2ab318aee
--- /dev/null
+++ b/dev-python/dask/files/dask-2021.10.0-warning.patch
@@ -0,0 +1,38 @@
+From f59293c180f846a220762701006d25655095991f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
+Date: Sat, 23 Oct 2021 09:09:29 +0200
+Subject: [PATCH] Fix test_describe_empty to work without global -Werror
+
+Fix test_describe_empty to work when the test suite is run without
+global -Werror.  This is e.g. desirable for packagers who don't want
+the test suite for a fixed version to suddenly start failing due to
+DeprecationWarnings in dependencies that otherwise don't break
+the package.
+
+Since the test expects either a ValueError or a RuntimeWarning, it seems
+that the easiest way to assert for that is to inject the "error" filter
+for the scope of the call.
+---
+ dask/dataframe/tests/test_dataframe.py | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/dask/dataframe/tests/test_dataframe.py b/dask/dataframe/tests/test_dataframe.py
+index 32edb488..e0d88ba8 100644
+--- a/dask/dataframe/tests/test_dataframe.py
++++ b/dask/dataframe/tests/test_dataframe.py
+@@ -570,7 +570,11 @@ def test_describe_empty():
+     )
+ 
+     with pytest.raises((ValueError, RuntimeWarning)):
+-        ddf_len0.describe(percentiles_method="dask").compute()
++        with warnings.catch_warnings():
++            # ensure that the warning is turned into an error since this is
++            # the easiest way to assert for exception-or-warning
++            warnings.simplefilter("error")
++            ddf_len0.describe(percentiles_method="dask").compute()
+ 
+     with pytest.raises(ValueError):
+         ddf_nocols.describe(percentiles_method="dask").compute()
+-- 
+2.33.1
+