Haha! Well, that was easier than my convoluted way!
Guess I'll have to change my blog post. Thanks for the tip!

There was an error in my blogpost. Fixed now...

It wasn't totally obvious how to do it, so I did a write up on my blog.

Add modules to Editorial with pipista

Hi! I had the same problem, but found a way to install modules in Editorial relatively easy.

solution at jackenhack.com