Big Sur Issues

[johnduva]

Working with @tathey1 and @JacopoTeneggi :

There are two separate issues depending on which version of Big Sur is being run:

• 11.2.1: Napari is successfully installed but cannot be imported in a python interpreter. It is met with the following error:
  

• 11.1: Napari is successfully install and imported but only works in Python 3.9.0 (fails in 3.9.1 as of 2/18/21). However, getting the Brainlit package to successfully install in 3.9.0 has created an opencv-python collision:

ERROR: No matching distribution found for opencv-python==4.2.0.32

When one goes to install that 4.2.0.32 version, it gives the error:

ERROR: Could not find a version that satisfies the requirement opencv-python==4.2.0.32
ERROR: No matching distribution found for opencv-python==4.2.0.32

Going forward: Require Big Sur users to use 11.1 until bugs are fixed in more recent version. Also possibly remove opencv from entire brainlit package

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