[MacPorts] #58331: Tensorflow freezes

[MacPorts]

#58331: Tensorflow freezes
---------------------+-----------------------------
 Reporter:  ptighin  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.5.4
 Keywords:           |       Port:  py37-tensorflow
---------------------+-----------------------------
 The macports version of tensorflow (both py36-tensorflow and
 py37-tensorflow) freezes when running a very simple script, e.g.,

 {{{
 import tensorflow as tf
 a = tf.constant([1.0, 2.0, 3.0, 4.0, 5.0, 6.0], shape=[2, 3], name='a')
 }}}

 I don't think the problem lies in the tensorflow binary itself but rather
 somewhere in its dependencies. Evidence: installing the tensorflow binary
 with pip (with all other dependencies still from macports) does not solve
 the issue.

 The issue is solved only when I create a clean virtual environment and
 install everything with pip.

 I've done a bit of research and it turns out that the execution freezes
 when running

 {{{
   const_tensor = g.create_op(
       "Const", [], [dtype_value.type],
       attrs={"value": tensor_value,
              "dtype": dtype_value},
       name=name).outputs[0]
 }}}

 inside the file
 {{{/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7
 /site-packages/tensorflow/python/framework/constant_op.py}}}.

-- 
Ticket URL: <https://trac.macports.org/ticket/58331>
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