"GNU with" or "Guix System with"?

[tumashu]

(define (kernel->boot-label kernel)
  "Return a label for the bootloader menu entry that boots KERNEL."
  (cond ((package? kernel)
         (string-append "GNU with "
                        (string-titlecase (package-name kernel)) " "
                        (package-version kernel)))
        ((inferior-package? kernel)
         (string-append "GNU with "
                        (string-titlecase (inferior-package-name kernel)) " "
                        (inferior-package-version kernel)))
        (else "GNU")))