Learning OpenLilyLib Editions Engraver

[Kale Good]

Hello,

I'm looking to create student, performer, and annotated editions of some 
classical guitar music. I thought editions engraver would be great, but 
I'm really struggling to wrap my mind around it (which isn't that 
unusual despite... holy shit, it's 17 years of casual lilypond usage).

Given that Urs has passed away, the code is quite old (4-10 years), and 
even the basic example from the git-hub wiki doesn't render as 
advertised (bad staff should not be red, but is on 2.24), I'm wondering 
if those who have used it in the past still do (and if they would 
recommend learning it starting today). Note that my only use-case is 
classical guitar music, which is typically quite short (and I'd be 
focusing on those shorter works for the foreseeable future).

Thanks,

Kale Good