[bitbake-devel] bitbake debugging...

[info at sd-kyber.com]

Hi,
I have a question regarding the practice of debugging bitbake itself:

Is there any document, suggestion what is the best practice to trace / step through the bitbake  execution? 

For example, is it possible to put ‘the break point’  at the moment the fetcher module I’m specifying is called? 
If that possible — and I think it is - what python environments are common to be used? ActiveSense, something else? 

Is there any document describing how to set such a ‘bitbake development’ environment?

I would appreciate all advices and help. 
(I’m planning to do it on Linux Machine, running Fedora).

Thanks, 
Michael.