Am Di., 22. Sept. 2020 um 18:41 Uhr schrieb Lassi Kortela <xxxxxx@lassi.io>:
>
> > I meant that there is a fundamental difference between a mere library
> > alias and a library defined through a hypothetical "extend" library
> > declaration:
> >
> > (define-library (srfi 158)
> >    (extend (srfi 121))
> >    (export make-accumulator ...)
> >    (import (scheme base) ...)
> >    (begin ...))
>
> Oh yeah, it's true that an `extend` that can be combined with other
> declarations has different semantics.
>
> > Already implemented in Unsyntax. :) Basically just two lines of
> > non-trivial code.
>
> Nice, fast work!

Arthur is at least as fast. He's already working on SRFI 212. :)