Thanks! 

I wish I could just (double)click on the object to see and edit the
faust code in an editor (of my choice)
 
Yes, that would be great. I'll see if it's feasible! 

What is the recommended workflow for faustgen~?

There are several examples in the help file and I'll try do make a short demonstration video. Meanwhile, the workflow is a bit like for the abstractions or for the [clone] object: 
- You need to have a FAUST file (.dsp)
- In your patch, create the [faustgen~] object and use the 1st argument to define the path of the FAUST file (relative to the patch)

If you want you can modify the FAUST file in you favorite text editor and after saving it you can use the [compile( message to dynamically reload the FAUST file. 

You can also use the [autocompile( message to automatically reload the FAUST file each time you save it. For example [autocompile 1 100(.
 
Wowww.. Thanks for that!! Some possibity to have an ARM compilation (for
RPi) in deken for it?
 
Since LLVM and FAUST are compatible with ARM architecture, I guess it's possible but I don't have the system to do it myself.  If anybody have a RPi, this should be easy to do or perhaps if you know a good CI system where I can compile online for ARM, I can have a look.
 
Cheers