Hi, That's a valid point, David. I've created http://bugs.call-cc.org/ticket/1776 for the issue you pointed out.
As far as I can tell, it's a tricky issue. Regarding "my understanding was that the Chicken developers do not care", and speaking for myself, I think that's a misunderstanding. Please consider that CHICKEN is developed by [a few] volunteers. I think we would all agree that it would be great to have an easily scrutable source code, but we are not there. Contributions to improve that are welcome, of course. (I tried to post this comment via the form in http://issues.guix.gnu.org/22366 , but apparently that hasn't worked -- trying e-mail now) All the best. Mario