I believe that in SRFI 128's comparators.sld, the two includes near the
end need an enclosing begin for R7RS:

  (begin
    (include "comparators-impl.scm")
    (include "default.scm"))

A similar situation also exists in the file srfi/128.sld:

	(begin
    (include "128.body1.scm")
    (include "128.body2.scm"))

Regards,

-chaw