bug#26339: [PATCH 02/18] system: Add extlinux support.

[Danny Milosavljevic]

> +            bootloader-configuration-file-location

In my opinion in UNIX such a thing is called a "file name", so how about

    bootloader-configururation-file-name

?

> +            bootloader-configuration-file-procedure

How about

  bootloader-configuration-file-generator

Or

  bootloader-configuration-file-generation-procedure


?

> +            bootloader-configuration-install-procedure

How about

  bootloader-configuration-installer

or

  bootloader-configuration-installation-procedure 

?

> +    (match-lambda
> +      (($ <boot-parameters> label _ _ _ kernel kernel-arguments initrd)
> +       #~(format port "LABEL ~a
> +  MENU LABEL ~a
> +  KERNEL ~a
> +  FDTDIR ~a/lib/dtbs
> +  INITRD ~a
> +  APPEND ~a
> +~%"
> +                 #$label #$label
> +                 #$kernel #$kernel #$initrd
> +                 (string-join (list address@hidden))))))

I think it would be better to use the field accessor procedures.

> +                    (* 10 timeout))

Magical conversion? Could use a comment...

Remainder of the patch LGTM.