Upgrade python version

[pperanich]

Description

This PR aims to address the following:

• Labgraph build support for CPython3.6-3.10
• Initial pass at standing up a cibuildwheel Github Action for building labgraph for platforms on push and pull-request.
• Upgrading dependencies in labgraph core and extensions to provide support for python3.6-3.10
• Updated install instructions for extensions
• Fixed breaking changes in labgraph core and extensions for new python versions.

Fixes #(issue)
#34

Type of change

• [ x ] New feature (non-breaking change which adds functionality)
• [ x ] This change requires a documentation update

Feature/Issue validation/testing

Dockerfile updates

To support compiling for python version after 3.6, an additional -fPIC position independent code flag was required in compiling python for the manylinux2014 image. A pull request is currently open (pypa/manylinux#1258) to merge this flag change into the manylinux repo. For testing, the manylinux2014 was compiled on my local machine, followed by a docker build ., which would then use the local manylinux2014 image. The default Dockerfile now compiles a manylinux compatible wheel for python 3.6-3.10.

cibuildwheel progress

A cibuildwheel action has been created to build Labgraph wheels for Mac, Windows, and Linux

• The Linux build job should work once Added position independent code flag for python compilation. pypa/manylinux#1258 is closed and the latest images are deployed.
• The Mac build job currently installs all required tools and is able to successfully compile the Py3.6 wheel, but fails on the tests that follow with a segmentation fault. Not sure of the source of this issue, but it could be related to the MacOS repair wheel command not currently having access to DYLD_LIBRARY_PATH (https://cibuildwheel.readthedocs.io/en/stable/faq/#macos-passing-dyld_library_path-to-delocate).
• The Windows build job installs the required tools, but its environment variables are not currently set correctly in the build step. Mspatz/docker windows #33 provides a Dockerfile.Windows which is able to successfully compile labgraph in a container, and it sets the environment variables with the following:
  RUN C:\Program^ Files^ ^(x86^)\Microsoft^ Visual^ Studio\2019\BuildTools\VC\Auxiliary\Build\vcvars64.bat && python setup_py36.py build
  Though I call vcvars64.bat in scripts/prepare_build_for_windows.bat, the build job fails to set the environment correctly. You may be able to make use of CIBW_ENVIRONMENT (https://cibuildwheel.readthedocs.io/en/stable/options/#environment) to inject the correct variables into the build environment, though I have failed to find a way to execute the command and set the environment variables yet.

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[jfResearchEng]

Thank you for your contribution on python version upgrade! Please also help us review the Facebook CLA, CLA is common for all Facebook public repository contributions.

[jfResearchEng]

As Python Software Foundation has stopped the support for python3.6 on Dec 2021, and python3.8 is the recommended version (as the latest version with security Maintenance status from Python Foundation) for LabGraph, you can alternatively consider supporting python3.8+ in this Pull Request if there is no quick fix to get cibuildwheel tests passed.
Reference: https://www.python.org/downloads/

[pperanich]

I'll look into that. The python versioning isn't the issue for the Linux cibuilds; I still expect the manylinux PR I submitted to solve those build issues. I can look into the MacOS and Windows builds again to see if supporting 3.8+ simplifies the build in any way.

[pperanich]

@jfResearchEng could you provide instructions on how the PyPi wheels were built for Windows and Mac? What were the steps to setup the build environment? That could help solve the issues in the cibuildwheel action.

[jfResearchEng]

@jfResearchEng could you provide instructions on how the PyPi wheels were built for Windows and Mac? What were the steps to setup the build environment? That could help solve the issues in the cibuildwheel action.

Instructions on Windows can be found here. Mac is similar with updates for directory in third-party/python and pybinding.