On Thursday 20 March 2014 at 14:40:50, John Rouillard wrote:
> Is the problem you are referring to GPL V3's more restrictive license
> and viral nature. 

It is more like a vaccination effect, if you ask me. :)
Yes, I believe that there may be a problem and roundup or a solution build on 
roundup could be considered a derived work. So when it doubt, we should
consider alternative solutions.

The subprocess would work on windows, but I don't think it is a particular ice 
technical solution. So before I recommend looking at the alternatives first.