This module should work as a standalone with a few tiny import
The interesting bit is checkgl, used for example like this:
checkgl!glDrawArrays(GL_POINTS, 0, 10);
then you get a nice debug message if glDrawArrays reports an
error. It will also report if a previous error has occurred and
wasn't cleared, but of course in that case it won't be able to
tell you where.
I wrap every OpenGL call with checkgl, it helps immensely.
Yes, I will do so in the future too.