1.2.0: failing test on s390x (Big endian): ERROR collecting test/test_subsystem_phi_max.py about pyphi HOT 3 OPEN

=================================== FAILURES ===================================
___________________________ [doctest] 2014paper.rst ____________________________
181     >>> subsystem.cause_repertoire((A,), (B, C, D))
182     array([[[[0.125, 0.125],
183              [0.125, 0.125]],
184     <BLANKLINE>
185             [[0.125, 0.125],
186              [0.125, 0.125]]]])
187 
188 And this gives us zero cause information:
189 
190     >>> subsystem.cause_info((A,), (B, C, D))
UNEXPECTED EXCEPTION: ValueError('Little-endian buffer not supported on big-endian compiler')
Traceback (most recent call last):
  File "/usr/lib64/python3.9/doctest.py", line 1336, in __run
    exec(compile(example.source, filename, "single",
  File "<doctest 2014paper.rst[12]>", line 1, in <module>
  File "/builddir/build/BUILD/pyphi-1.2.0/pyphi/subsystem.py", line 485, in cause_info
    return repertoire_distance(
  File "/builddir/build/BUILD/pyphi-1.2.0/pyphi/distance.py", line 281, in repertoire_distance
    dist = directional_emd(direction, r1, r2)
  File "/builddir/build/BUILD/pyphi-1.2.0/pyphi/distance.py", line 266, in directional_emd
    return round(func(d1, d2), config.PRECISION)
  File "/builddir/build/BUILD/pyphi-1.2.0/pyphi/distance.py", line 143, in hamming_emd
    return emd(d1, d2, _hamming_matrix(N))
  File "pyemd/emd.pyx", line 49, in pyemd.emd.emd
ValueError: Little-endian buffer not supported on big-endian compiler
/builddir/build/BUILD/pyphi-1.2.0/docs/examples/2014paper.rst:190: UnexpectedException
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