gnu: python-seaborn: Update to 0.11.1.

* gnu/packages/patches/python-seaborn-kde-test.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/python-xyz.scm (python-seaborn): Use it, and update to
0.11.1.

gnu/local.mk

@@ -1633,6 +1633,7 @@ dist_patch_DATA =						\
   %D%/packages/patches/python2-pygobject-2-deprecation.patch	\
   %D%/packages/patches/python-pygpgme-fix-pinentry-tests.patch	\
   %D%/packages/patches/python-robotframework-source-date-epoch.patch \
+  %D%/packages/patches/python-seaborn-kde-test.patch		\
   %D%/packages/patches/python2-subprocess32-disable-input-test.patch	\
   %D%/packages/patches/python-unittest2-python3-compat.patch	\
   %D%/packages/patches/python-unittest2-remove-argparse.patch	\

gnu/packages/patches/python-seaborn-kde-test.patch

@@ -0,0 +1,36 @@
+This patch is an excerpt of this upstream commit:
+
+  commit 0a24478a550132f1882e5be5f5dbc0fc446a8a6c
+  Author: Michael Waskom <mwaskom@users.noreply.github.com>
+  Date:   Mon Dec 21 18:44:58 2020 -0500
+
+      Raise minimal supported Python to 3.7 and bump requirements (#2396)
+
+It fixes the failure of 'test_weights'.
+
+--- a/seaborn/tests/test_distributions.py
++++ b/seaborn/tests/test_distributions.py
+@@ -709,21 +708,17 @@ class TestKDEPlotUnivariate:
+         integral = integrate.trapz(ydata, np.log10(xdata))
+         assert integral == pytest.approx(1)
+ 
+-    @pytest.mark.skipif(
+-        LooseVersion(scipy.__version__) < "1.2.0",
+-        reason="Weights require scipy >= 1.2.0"
+-    )
+     def test_weights(self):
+ 
+         x = [1, 2]
+         weights = [2, 1]
+ 
+-        ax = kdeplot(x=x, weights=weights)
++        ax = kdeplot(x=x, weights=weights, bw_method=.1)
+ 
+         xdata, ydata = ax.lines[0].get_xydata().T
+ 
+-        y1 = ydata[np.argwhere(np.abs(xdata - 1).min())]
+-        y2 = ydata[np.argwhere(np.abs(xdata - 2).min())]
++        y1 = ydata[np.abs(xdata - 1).argmin()]
++        y2 = ydata[np.abs(xdata - 2).argmin()]
+ 
+         assert y1 == pytest.approx(2 * y2)

gnu/packages/python-xyz.scm

@@ -8800,13 +8800,14 @@ (define-public python-pyqrcode
 (define-public python-seaborn
   (package
     (name "python-seaborn")
-    (version "0.10.0")
+    (version "0.11.1")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "seaborn" version))
        (sha256
-        (base32 "1ffbms4kllihfycf6j57dziq4imgdjw03sqgifh5wzcd2d743zjr"))))
+        (base32 "1b81p9s6li3b606ivgbynrh102fclwlw74m8qxzsii9pv6p8xrs4"))
+       (patches (search-patches "python-seaborn-kde-test.patch"))))
     (build-system python-build-system)
     (arguments
      `(#:phases