BUG: Remove the import of the OpenGL GraphicsContext just to do an isinstance() check. There are some errors involving the import of pyglet that are not caught.
BUG: Remove the import of the OpenGL GraphicsContext just to do an isinstance() check. There are some errors involving the import of pyglet that are not caught.

tommy-u/enable,tommy-u/enable,tommy-u/enable,tommy-u/enable