Python-matplotlib under aarch64 broken

Hello,

When I do a

guix build python-matplotlib

under aarch64 I get the error below during the testing phase.

Note that

guix describe -f channels

gives

(list (channel

(name 'guix)

(url "https://git.savannah.gnu.org/git/guix.git")

(branch "master")

(commit

"c7ef7a0f84bd19ef32e4cc5439ee4f332921eeb9")

(introduction

(make-channel-introduction

"9edb3f66fd807b096b48283debdcddccfea34bad"

(openpgp-fingerprint

"BBB0 2DDF 2CEA F6A8 0D1D E643 A2A0 6DF2 A33A

54FA")))))

Thanks,

C.

=================================== FAILURES

===================================

_________________________ test_warn_big_data_best_loc

__________________________

def test_warn_big_data_best_loc():

fig, ax = plt.subplots()

fig.canvas.draw() # So that we can call draw_artist

later.

for idx in range(1000):

ax.plot(np.arange(5000), label=idx)

with rc_context({'legend.loc': 'best'}):

legend = ax.legend()

with pytest.warns(UserWarning) as records:

E Failed: DID NOT WARN. No warnings of type (<class

'UserWarning'>,) was emitted. The list of emitted warnings is: [].

/gnu/store/fqlbc7ny3kf5hqwpq46wxnvf5223prxi-python-matplotlib-3.4.3/lib/python3.9/site-packages/matplotlib/tests/test_legend.py:677:

Failed

=========================== short test summary info

============================

FAILED test_legend.py::test_warn_big_data_best_loc - Failed: DID

NOT WARN. No...

==== 1 failed, 4905 passed, 2293 skipped, 1 deselected, 9 xfailed

in 53.61s ====

error: in phase 'check': uncaught exception:

%exception #<&invoke-error program: "python" arguments:

("tests.py" "-v" "-m" "not network and not webagg") exit-status:

1 term-signal: #f stop-signal: #f>

phase `check' failed after 54.4 seconds

command "python" "tests.py" "-v" "-m" "not network and not webagg"

failed with status 1

builder for

`/gnu/store/6mf4z42cdg64kpzzhx9a1sjps3vhirrb-python-matplotlib-3.4.3.drv'

failed with exit code 1