Nicolas M. Thiery wrote:
> Ah, by the way, a question for spkg experts: the current dot2tex spkg
> I built contains two separate python modules, pyparsing and dot2tex,
> the later depending on the former. Should there be two spkg's instead?
> Is it possible to state the dependency so that users could just do
> sage -i dot2tex... and get both installed, or at leave have a useful
> error message?

I'm not an expert, but in case it helps:  It seems that pyparsing is
already included with matplotlib.  However, the import statement needs
to be qualified:

sage: import matplotlib.pyparsing


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