Update to Cirq 0.12

[mpharrigan]

A new Cirq has been released. I will track any outstanding migration issues here.

• bump cirq version number
• ERROR: cirq 0.11.1 has requirement cirq-core==0.11.1, but you'll have cirq-core 0.12.0 which is incompatible.
  ERROR: cirq 0.11.1 has requirement cirq-google==0.11.1, but you'll have cirq-google 0.12.0 which is incompatible. I think this is from openfermion Release version compatible with Cirq 0.12 OpenFermion#743. pip install seems to work anyway: the above is a warning. newer pips hang in a very bad way, I think related to this and pytket
• cirq_google.gate_set breaking change
• segfault in docker when running tests. Seems to be a pytket issue. Pinning to not-the-latest-version
• docs/quantum_chess/concepts is pre-filled out. Is this necessary? #214 -- not blocking. I just found it when manually testing all the pre-filled-in notebooks
• molecular_data notebook issue. This is due to a change in h5py and no recent release of openfermionpyscf. Pinning h5py works for now but may cause environment issues later if other projects require a newer h5py.

[mpharrigan]

in hfvqf/molecular_data.ipynb

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-5-0c9a581e9405> in <module>
      1 from openfermion import MolecularData, general_basis_change
----> 2 from openfermionpyscf import run_pyscf

~/cirq/py39-venv/lib/python3.9/site-packages/openfermionpyscf/__init__.py in <module>
     15 """
     16 
---> 17 from ._pyscf_molecular_data import PyscfMolecularData
     18 
     19 from ._run_pyscf import (

~/cirq/py39-venv/lib/python3.9/site-packages/openfermionpyscf/_pyscf_molecular_data.py in <module>
     15 import numpy
     16 from functools import reduce
---> 17 from pyscf import ao2mo
     18 from pyscf import scf
     19 from pyscf.cc.addons import spatial2spin

~/cirq/py39-venv/lib/python3.9/site-packages/pyscf/__init__.py in <module>
     69 
     70 from pyscf import __config__
---> 71 from pyscf import lib
     72 from pyscf import gto
     73 from pyscf import scf

~/cirq/py39-venv/lib/python3.9/site-packages/pyscf/lib/__init__.py in <module>
     22 from pyscf.lib import parameters
     23 param = parameters
---> 24 from pyscf.lib import numpy_helper
     25 from pyscf.lib import linalg_helper
     26 from pyscf.lib import logger

~/cirq/py39-venv/lib/python3.9/site-packages/pyscf/lib/numpy_helper.py in <module>
     25 import math
     26 import numpy
---> 27 from pyscf.lib import misc
     28 from numpy import asarray  # For backward compatibility
     29 

~/cirq/py39-venv/lib/python3.9/site-packages/pyscf/lib/misc.py in <module>
     44                      'Async-IO is disabled.\n' % ((h5py.version.version,)*2))
     45 if h5py.version.version[:2] == '3.':
---> 46     h5py.get_config().default_file_mode = 'a'
     47 
     48 c_double_p = ctypes.POINTER(ctypes.c_double)

h5py/h5.pyx in h5py.h5.H5PYConfig.default_file_mode.__set__()

ValueError: Using default_file_mode other than 'r' is no longer supported. Pass the mode to h5py.File() instead.

[dstrain115]

Let me know if you need help with the gate_set issue. I did that change. I am not sure what the broken change was. If it is typing, you should be able to change SerializableGateSet with Serializer.

[mpharrigan]

It's a pretty simple fix. Some places we were importing cirq_google.gate_set. I changed those instances to top level cirq_google

[ncrubin]

@mpharrigan this is an issue with pyscf. pip install h5py==3.2.1 will fix this.

[mpharrigan]

Is there an open issue for openfermionpyscf? to release a new version that doesn't require pinning or itself chooses the correct version?

[mpharrigan]

opened quantumlib/OpenFermion-PySCF#60