Get cirq-core only

[antalszava]

Installing cirq pulls in packages that are not used by this plugin, but packages that bring further dependency constraints.

Pulling cirq-core only along with cirq-pasqal should provide a solution.

This is useful for the QML repository, where a dependency conflict arises between cirq-rigetti and TensorFlow:

The conflict is caused by:
    tensorflow 2.6.0 depends on six~=1.15.0
    cirq-rigetti 0.13.1 depends on six~=1.16.0

With the changes here, we'll no longer be requiring cirq-rigetti.

[codecov]

Codecov Report

Merging #94 (d36be33) into master (7515d59) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #94   +/-   ##
=======================================
  Coverage   99.23%   99.23%           
=======================================
  Files           8        8           
  Lines         391      391           
=======================================
  Hits          388      388           
  Misses          3        3           

---

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[Jaybsoni]

Interesting that the naming changed, Should we pin it to the latest (0.13.x)?

[antalszava]

Interesting that the naming changed, Should we pin it to the latest (0.13.x)?

Rather than a naming change, this pulls in only Cirq core. When hitting pip install cirq multiple packages are pulled in:

Collecting cirq
  Using cached cirq-0.13.1-py3-none-any.whl (7.7 kB)
Collecting cirq-pasqal==0.13.1
  Using cached cirq_pasqal-0.13.1-py3-none-any.whl (29 kB)
Collecting cirq-aqt==0.13.1
  Using cached cirq_aqt-0.13.1-py3-none-any.whl (18 kB)
Collecting cirq-ionq==0.13.1
  Using cached cirq_ionq-0.13.1-py3-none-any.whl (47 kB)
Collecting cirq-google==0.13.1
  Using cached cirq_google-0.13.1-py3-none-any.whl (437 kB)
Collecting cirq-core==0.13.1
  Using cached cirq_core-0.13.1-py3-none-any.whl (1.6 MB)
Collecting cirq-web==0.13.1
  Using cached cirq_web-0.13.1-py3-none-any.whl (328 kB)
Collecting cirq-rigetti==0.13.1
  Using cached cirq_rigetti-0.13.1-py3-none-any.whl (55 kB)

along with further dependencies (e.g., six).

As for pinning, it's okay as is, we'd pin for 0.13.x if the plugin was not working with >=0.10.0, <0.13.0.