As reported on the mailing list here: TypeError: constructFunction() got an unexpected keyword argument 'force_extension'
Problem is that we can't build the older releases with python 3.7, so for the time being:
Build and update scripts modified: r20572.
Fixed upstream: https://github.com/mcfletch/pyopengl/issues/15.
Build scripts updated: r21061.
Re-occurred: #2330.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/1970