Code review comment for lp:~zorba-coders/zorba/fix_bug_962255

> Is there any difference between the old zorba_module_dependencies.xqi and the
> new zorba_module_dependencies.xqy ? Why was the filename changed?
>
> Besides that, though, as mentioned on the other merge proposal, I don't think
> you can move the modules_svg target out of the core like this.
What is the best solution to check if an external module (Graphviz in this case) is build from within Zorba?

Thanks for the help.