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)
log/gnu/packages/pascal.scm'>log</a><a href='/guix/tree/gnu/packages/pascal.scm?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>tree</a><a href='/guix/commit/gnu/packages/pascal.scm?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>commit</a><a href='/guix/diff/gnu/packages/pascal.scm?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/pascal.scm'>
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<div class='path'>path: <a href='/guix/log/?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>root</a>/<a href='/guix/log/gnu?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>gnu</a>/<a href='/guix/log/gnu/packages?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>packages</a>/<a href='/guix/log/gnu/packages/pascal.scm?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3'>pascal.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/pascal.scm?id=ece8e759027ac02602d3ffb5f4ecc41a15a4ecf3&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-11-12 17:43:31 -0500'>2021-11-12</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=7b15e14a904c732d7c950b8a624904308d5b869f'>gnu: fpc: Fix it, really.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pascal.scm (fpc): Inputs are controlled to be package-like
objects, so the previous attempt also failed.
[native-inputs]{fpc-binary}: Backtrack to the original solution, which is to
use the x86_64 bootstrap input for unsupported architectures.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-11-12 17:16:14 -0500'>2021-11-12</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=d36cba20ef3157a8a5ae47e9282cb5da34eec3d8'>gnu: fpc: Lazily evaluate the error case.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pascal.scm (fpc)[native-inputs]: Defer evaluating the match
directive; the error condition would previously be eagerly evaluated and cause
Guix to fail on non-intel machines.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-11-11 21:52:08 -0500'>2021-11-11</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=79ca578182b6a35bd567d408a32e5728e4f2a552'>gnu: fpc: Fix build.</a><span class='msg-avail'>...<span class='msg-tooltip'>The bootstrap binaries (!) were probably too old.

* gnu/packages/pascal.scm: Add missing copyright line.
(%fpc-version, %fpc-release-date): New variables.
(fpc-bootstrap-i386-3.0.4): Add a FIXME for a proper bootstrap.  Rename to...
(fpc-bootstrap-i386): ... this and update to 3.2.2.  Use %fpc-version.
(fpc-bootstrap-x86_64-3.0.4): Rename to...
(fpc-bootstrap-x86_64): ... this and update to 3.2.2.  Use %fpc-version.
(fpc): Remove trailing #t.
[version]: Use %fcp-version.
[inputs]: Adjust accordingly.
[phases]: Remove hard coded version and release strings.
</span></span></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-07-24 16:23:23 +0200'>2021-07-24</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=377e9453caf16417fc4ec8a2b65db1ac4ba0d5ff'>gnu: Use 'search-input-file' when looking for *.so and *.a.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/bioinformatics.scm (sailfish)[arguments]: Use
'search-input-file' when looking for *.a and *.so.
* gnu/packages/emulators.scm (dolphin-emu): Likewise.
* gnu/packages/engineering.scm (lepton-eda): Likewise.
(pcb): Likewise.
* gnu/packages/golang.scm (go-1.4): Likewise.
(go-1.14): Likewise.
* gnu/packages/haskell.scm (ghc-7): Likewise.
* gnu/packages/irods.scm (irods): Likewise.
* gnu/packages/language.scm (python2-tegaki-pygtk): Likewise.
* gnu/packages/lisp-xyz.scm (sbcl-lzlib): Likewise.
(sbcl-cl-gobject-introspection): Likewise.
(sbcl-cl-ana): Likewise.
(sbcl-cl-libuv): Likewise.
(sbcl-cl-async): Likewise.
(sbcl-mcclim): Likewise.
(sbcl-zstd): Likewise.
(sbcl-cl-opengl): Likewise.
(sbcl-lev): Likewise.
(sbcl-cl-glfw3): Likewise.
* gnu/packages/machine-learning.scm (tensorflow): Likewise.
* gnu/packages/messaging.scm (utox): Likewise.
* gnu/packages/mpi.scm (java-openmpi): Likewise.
* gnu/packages/music.scm (jack-select): Likewise.
* gnu/packages/pascal.scm (fpc): Likewise.
* gnu/packages/python-crypto.scm (python-libnacl): Likewise.
* gnu/packages/python-xyz.scm (python-cairocffi): Likewise.
(python-pyev): Likewise.
(python-pytidylib): Likewise.
* gnu/packages/radio.scm (unixcw): Likewise.
* gnu/packages/rust.scm (rust-1.32): Likewise.
* gnu/packages/security-token.scm (opensc): Likewise.
(python-pyscard): Likewise.
* gnu/packages/selinux.scm (python-setools): Likewise.
* gnu/packages/spice.scm (libcacard): Likewise.
* gnu/packages/telephony.scm (libtgvoip): Likewise.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-06-24 02:29:13 +0200'>2021-06-24</span></td><td><a href='/guix/commit/gnu/packages/pascal.scm?id=67b682f0ba10ca7aaf8ca5fc6a6ce4baf86b7d19'>gnu: fpc: Update to 3.2.2.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/pascal.scm (fpc): Update to 3.2.2.
</span></span></td><td>Danny Milosavljevic</td></tr>