umfpack error

[Juan Nunez-Iglesias]

Hi guys,

How do I build scipy with umfpack to silence this error:

Exception AttributeError: "'UmfpackContext' object has no attribute
'_symbolic'" in <bound method UmfpackContext.__del__ of
<scipy.sparse.linalg.dsolve.umfpack.umfpack.UmfpackContext object at
0x101b62050>> ignored

and speed up random_walker? I've just been doing a pip install scipy till
now.

Juan.
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