[metapost] Strange behavior with verbatimtex

[Taco Hoekwater]

Yann SALMON wrote:
> Good morning/afternoon/evening.

Good morning to you too.

> The problem is that I need to use LaTeX packages, and I cannot.
> 
> Has someone an idea about why this does not work and how I could correct
> my code ?

You have to make sure that latex is used instead of plain tex.
On teTeX/Web2c, you can do this (commandline option):

   $ mpost -tex=latex myfile

or this (setting an environment variable)

   $ TEX=latex && mpost myfile

No doubt, something similar will work on miktex as well.

Please check the miktex manual.

Greetings, Taco