In particular, when we encounter things that we do not support, of which there are quite a few at present, we should be clear about what is not support and its location in the source code.
We now have some support for this---it is not ideal but it work. I am not closing this yet, as we could probably have
much more informative errors than what we currently do.
In particular, when we encounter things that we do not support, of which there are quite a few at present, we should be clear about what is not support and its location in the source code.