Great question. Not that I know of. (The SRFIs unfortunately aren't necessarily this.)
How it worked in the past was that people would ask or Web search as-needed, and then others would answer.
Unfortunately, with the demise of Usenet, there was fragmenting in where you had to go to ask, as a lot of people gravitated towards implementation-specific forums. For Racket (nee PLT Scheme), there was a wealth of good advise in the email lists, but at some point after hosting was moved to Google Groups, Google searches themselves seemed to stop finding many of the articles that were in Google's own archive, even when you explicitly directed the search.
I suppose the thing to do is to just ask on demand, in one of the forum for whatever implementation you're using. (The Racket community, for one, was exceedingly good at this, when I was more involved. And I suspect some of the other popular Scheme implementations are, as well.)
How it worked in the past was that people would ask or Web search as-needed, and then others would answer.
Unfortunately, with the demise of Usenet, there was fragmenting in where you had to go to ask, as a lot of people gravitated towards implementation-specific forums. For Racket (nee PLT Scheme), there was a wealth of good advise in the email lists, but at some point after hosting was moved to Google Groups, Google searches themselves seemed to stop finding many of the articles that were in Google's own archive, even when you explicitly directed the search.
I suppose the thing to do is to just ask on demand, in one of the forum for whatever implementation you're using. (The Racket community, for one, was exceedingly good at this, when I was more involved. And I suspect some of the other popular Scheme implementations are, as well.)