(define-module (machines amd64)
  ;; file-system
  ;; swap-space
  #:use-module (gnu system file-systems)

  ;; linux
  ;; linux-firmware
  #:use-module (nongnu packages linux)

  ;; microcode-initrd
  #:use-module (nongnu system linux-initrd))

;; string ->
;; (list record* file-system)
(define-public (file-systems* host-name*)
  (let* ((root-device-string (string-append host-name* "-root"))

	 (root-device (file-system-label root-device-string))

	 (file-system-root (file-system (type "ext4")
					(mount-point "/")
					(device root-device))))
    (append %base-file-systems
            (list file-system-root))))

;; (list record* package)
(define-public firmware*
  (list linux-firmware))

;; record* package
(define-public initrd*
  microcode-initrd)

;; record* package
(define-public kernel-amd64
  linux)

;; string ->
;; (list record* swap-space)
(define-public (swap-devices* host-name*)
  (let* ((label* (string-append host-name* "-swap"))

	 (target* (file-system-label label*))

	 (swap-space* (swap-space (target target*))))
    (list swap-space*)))

;;;???????????????????????????????????????????????????????????????????

(define-public (bootloader-device-path host-name)
  (let*
       ((close-pipe (@ (ice-9 popen) close-pipe))
        (open-input-pipe (@ (ice-9 popen) open-input-pipe))
        (read-line (@ (ice-9 rdelim) read-line))
        (command-chain (string-append "findmnt -o SOURCE,LABEL "
                                      "| grep "
                                      host-name
                                      " "
                                      "| head -n 1 "
                                      "| awk '{print $1}' "
                                      "| sed 's/[0-9]*$//' "))
        (port (open-input-pipe command-chain))
        (output (read-line port)))
     (close-pipe port)
     output))