RnRS are guidelines like Posix. They aren't implementations. Systemd is an implementation, not a guideline. The complaints against systemd are that you will n

RnRS are guidelines like Posix. They aren't implementations. Systemd is an implementation, not a guideline. The complaints against systemd are that you will need to be bit-compatible with it when it inevitably fails, which will be soon with what IBM does to the companies it eats. The complaints against R6RS is that scheme is a simple language, if you want a complex language use Common Lisp instead.