Migrate to the new 'targets' field of bootloader-configuration.

The old 'target' field is deprecated; adjust the sources to use the new
'targets' one instead.

* doc/guix-cookbook.texi<target>: Replace by 'targets'.
* gnu/bootloader/grub.scm: Likewise.
* gnu/installer/parted.scm: Likewise.
* gnu/machine/digital-ocean.scm: Likewise.
* gnu/system/examples/asus-c201.tmpl: Likewise
* gnu/system/examples/bare-bones.tmpl: Likewise
* gnu/system/examples/bare-hurd.tmpl: Likewise
* gnu/system/examples/beaglebone-black.tmpl: Likewise
* gnu/system/examples/desktop.tmpl: Likewise
* gnu/system/examples/docker-image.tmpl: Likewise
* gnu/system/examples/lightweight-desktop.tmpl: Likewise
* gnu/system/examples/vm-image.tmpl: Likewise
* gnu/system/examples/yggdrasil.tmpl: Likewise
* gnu/system/hurd.scm: Likewise
* gnu/system/images/hurd.scm: Likewise
* gnu/system/images/novena.scm: Likewise
* gnu/system/images/pine64.scm: Likewise
* gnu/system/images/pinebook-pro.scm: Likewise
* gnu/system/images/rock64.scm: Likewise
* gnu/system/install.scm: Likewise
* gnu/system/vm.scm: Likewise
* gnu/tests.scm: Likewise
* gnu/tests/ganeti.scm: Likewise
* gnu/tests/install.scm: Likewise
* gnu/tests/nfs.scm: Likewise
* gnu/tests/telephony.scm: Likewise
* tests/boot-parameters.scm: Likewise
* tests/system.scm: Likewise

doc/guix-cookbook.texi

@@ -1718,7 +1718,7 @@ operating-system dedicated to the @b{Pine A64 LTS} board.
    (locale "en_US.utf8")
    (bootloader (bootloader-configuration
                 (bootloader u-boot-pine64-lts-bootloader)
-                (target "/dev/vda")))
+                (targets '("/dev/vda"))))
    (initrd-modules '())
    (kernel linux-libre-arm64-generic)
    (file-systems (cons (file-system

gnu/bootloader/grub.scm

@@ -647,11 +647,12 @@ (define (install-grub-efi-netboot subdir)
 MOUNT-POINT is the last argument in 'guix system init /etc/config.scm mnt/point'
 or '/' for other 'guix system' commands.
 
-TARGET is the target argument given to the bootloader-configuration in
+Where TARGET comes from the targets argument given to the
+bootloader-configuration in:
 
 (operating-system
  (bootloader (bootloader-configuration
-              (target \"/boot\")
+              (targets '(\"/boot\"))
               …))
  …)
 

gnu/installer/parted.scm

@@ -1356,9 +1356,9 @@ (define (bootloader-configuration user-partitions)
     `((bootloader-configuration
        ,@(if (efi-installation?)
              `((bootloader grub-efi-bootloader)
-               (target ,(default-esp-mount-point)))
+               (targets (list ,(default-esp-mount-point))))
              `((bootloader grub-bootloader)
-               (target ,root-partition-disk)))
+               (targets (list ,root-partition-disk))))
 
        ;; XXX: Assume we defined the 'keyboard-layout' field of
        ;; <operating-system> right above.

gnu/machine/digital-ocean.scm

@@ -235,7 +235,7 @@ (define (guix-infect network)
   (timezone \"Etc/UTC\")
   (bootloader (bootloader-configuration
                (bootloader grub-bootloader)
-               (target \"/dev/vda\")
+               (targets '(\"/dev/vda\"))
                (terminal-outputs '(console))))
   (file-systems (cons (file-system
                         (mount-point \"/\")

gnu/system/examples/asus-c201.tmpl

@@ -14,7 +14,7 @@
   ;; "my-root" is the label of the target root file system.
   (bootloader (bootloader-configuration
                 (bootloader depthcharge-bootloader)
-                (target "/dev/mmcblk0p1")))
+                (targets '("/dev/mmcblk0p1"))))
 
   ;; The ASUS C201PA requires a very particular kernel to boot,
   ;; as well as the following arguments.

gnu/system/examples/bare-bones.tmpl

@@ -15,7 +15,7 @@
   ;; root file system.
   (bootloader (bootloader-configuration
                 (bootloader grub-bootloader)
-                (target "/dev/sdX")))
+                (targets '("/dev/sdX"))))
   (file-systems (cons (file-system
                         (device (file-system-label "my-root"))
                         (mount-point "/")

gnu/system/examples/bare-hurd.tmpl

@@ -32,7 +32,7 @@
     (inherit %hurd-default-operating-system)
     (bootloader (bootloader-configuration
                  (bootloader grub-minimal-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems (cons (file-system
                           (device (file-system-label "my-root"))
                           (mount-point "/")

gnu/system/examples/beaglebone-black.tmpl

@@ -14,7 +14,7 @@
   ;; the label of the target root file system.
   (bootloader (bootloader-configuration
                (bootloader u-boot-beaglebone-black-bootloader)
-               (target "/dev/mmcblk1")))
+               (targets '("/dev/mmcblk1"))))
 
   ;; This module is required to mount the SD card.
   (initrd-modules (cons "omap_hsmmc" %base-initrd-modules))

gnu/system/examples/desktop.tmpl

@@ -19,7 +19,7 @@
   ;; Partition mounted on /boot/efi.
   (bootloader (bootloader-configuration
                 (bootloader grub-efi-bootloader)
-                (target "/boot/efi")
+                (targets '("/boot/efi"))
                 (keyboard-layout keyboard-layout)))
 
   ;; Specify a mapped device for the encrypted root partition.

gnu/system/examples/docker-image.tmpl

@@ -35,7 +35,7 @@
   ;; This will be ignored.
   (bootloader (bootloader-configuration
                (bootloader grub-bootloader)
-               (target "does-not-matter")))
+               (targets '("does-not-matter"))))
   ;; This will be ignored, too.
   (file-systems (list (file-system
                         (device "does-not-matter")

gnu/system/examples/lightweight-desktop.tmpl

@@ -16,7 +16,7 @@
   ;; Partition mounted on /boot/efi.
   (bootloader (bootloader-configuration
                 (bootloader grub-efi-bootloader)
-                (target "/boot/efi")))
+                (targets '("/boot/efi"))))
 
   ;; Assume the target root file system is labelled "my-root",
   ;; and the EFI System Partition has UUID 1234-ABCD.

gnu/system/examples/vm-image.tmpl

@@ -51,7 +51,7 @@ accounts.\x1b[0m
   ;; Adjust as needed.
   (bootloader (bootloader-configuration
                (bootloader grub-bootloader)
-               (target "/dev/vda")
+               (targets '("/dev/vda"))
                (terminal-outputs '(console))))
   (file-systems (cons (file-system
                         (mount-point "/")

gnu/system/examples/yggdrasil.tmpl

@@ -15,7 +15,7 @@
   ;; root file system.
   (bootloader (bootloader-configuration
                 (bootloader grub-bootloader)
-                (target "/dev/sdX")))
+                (targets '("/dev/sdX"))))
   (file-systems (cons (file-system
                         (device (file-system-label "my-root"))
                         (mount-point "/")

gnu/system/hurd.scm

@@ -110,7 +110,7 @@ (define %hurd-default-operating-system
     (hurd hurd)
     (bootloader (bootloader-configuration
                  (bootloader grub-minimal-bootloader)
-                 (target "/dev/vda")))
+                 (targets '("/dev/vda"))))
     (initrd #f)
     (initrd-modules (lambda _ '()))
     (firmware '())

gnu/system/images/hurd.scm

@@ -42,7 +42,7 @@ (define hurd-barebones-os
     (inherit %hurd-default-operating-system)
     (bootloader (bootloader-configuration
                  (bootloader grub-minimal-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems (cons (file-system
                           (device (file-system-label "my-root"))
                           (mount-point "/")

gnu/system/images/novena.scm

@@ -39,7 +39,7 @@ (define novena-barebones-os
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader u-boot-novena-bootloader)
-                 (target "/dev/vda")))
+                 (targets '("/dev/vda"))))
     (initrd-modules '("sdhci-esdhc-imx" "ahci_imx" "i2c-dev"))
     ;(kernel linux-libre-arm-generic)
     (kernel-arguments '("console=ttymxc1,115200"))

gnu/system/images/pine64.scm

@@ -38,7 +38,7 @@ (define pine64-barebones-os
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader u-boot-pine64-lts-bootloader)
-                 (target "/dev/vda")))
+                 (targets '("/dev/vda"))))
     (initrd-modules '())
     (kernel linux-libre-arm64-generic)
     (file-systems (cons (file-system

gnu/system/images/pinebook-pro.scm

@@ -38,7 +38,7 @@ (define pinebook-pro-barebones-os
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader u-boot-pinebook-pro-rk3399-bootloader)
-                 (target "/dev/vda")))
+                 (targets '("/dev/vda"))))
     (initrd-modules '())
     (kernel linux-libre-arm64-generic)
     (file-systems (cons (file-system

gnu/system/images/rock64.scm

@@ -39,7 +39,7 @@ (define rock64-barebones-os
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader u-boot-rock64-rk3328-bootloader)
-                 (target "/dev/sda")))
+                 (targets '("/dev/sda"))))
     (initrd-modules '())
     (kernel linux-libre-arm64-generic)
     (file-systems (cons (file-system

gnu/system/install.scm

@@ -454,7 +454,7 @@ (define installation-os
     (name-service-switch %mdns-host-lookup-nss)
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sda")))
+                 (targets '("/dev/sda"))))
     (label (string-append "GNU Guix installation "
                           (package-version guix)))
 
@@ -530,7 +530,7 @@ (define* (os-with-u-boot os board #:key (bootloader-target "/dev/mmcblk0")
     (bootloader (bootloader-configuration
                  (bootloader (bootloader (inherit u-boot-bootloader)
                               (package (make-u-boot-package board triplet))))
-                 (target bootloader-target)))))
+                 (targets (list bootloader-target))))))
 
 (define* (embedded-installation-os bootloader bootloader-target tty
                                    #:key (extra-modules '()))
@@ -542,7 +542,7 @@ (define* (embedded-installation-os bootloader bootloader-target tty
     (inherit installation-os)
     (bootloader (bootloader-configuration
                  (bootloader bootloader)
-                 (target bootloader-target)))
+                 (targets (list bootloader-target))))
     (kernel linux-libre)
     (kernel-arguments
      (cons (string-append "console=" tty)

gnu/system/vm.scm

@@ -630,7 +630,7 @@ (define virtual-file-systems
     (bootloader (bootloader-configuration
                   (inherit (operating-system-bootloader os))
                   (bootloader grub-bootloader)
-                  (target "/dev/vda")))
+                  (targets '("/dev/vda"))))
 
     (initrd (lambda (file-systems . rest)
               (apply (operating-system-initrd os)

gnu/tests.scm

@@ -222,7 +222,7 @@ (define %simple-os
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems (cons (file-system
                           (device (file-system-label "my-root"))
                           (mount-point "/")

gnu/tests/ganeti.scm

@@ -38,7 +38,7 @@ (define %ganeti-os
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/vda")))
+                 (targets '("/dev/vda"))))
     (file-systems (cons (file-system
                           (device (file-system-label "my-root"))
                           (mount-point "/")

gnu/tests/install.scm

@@ -494,7 +494,7 @@ (define-os-with-source (%separate-home-os %separate-home-os-source)
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/vdb")))
+                 (targets '("/dev/vdb"))))
     (kernel-arguments '("console=ttyS0"))
     (file-systems (cons* (file-system
                            (device (file-system-label "my-root"))
@@ -709,7 +709,7 @@ (define-os-with-source (%encrypted-root-os %encrypted-root-os-source)
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/vdb")))
+                 (targets '("/dev/vdb"))))
 
     ;; Note: Do not pass "console=ttyS0" so we can use our passphrase prompt
     ;; detection logic in 'enter-luks-passphrase'.

gnu/tests/nfs.scm

@@ -50,7 +50,7 @@ (define %base-os
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems %base-file-systems)
     (users %base-user-accounts)
     (packages (cons*

gnu/tests/telephony.scm

@@ -74,7 +74,7 @@ (define* (make-jami-os #:key provisioning?)
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems (cons (file-system
                           (device (file-system-label "my-root"))
                           (mount-point "/")

tests/boot-parameters.scm

@@ -81,7 +81,7 @@ (define %default-operating-system
 
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sda")))
+                 (targets '("/dev/sda"))))
     (file-systems (cons* (file-system
                            (device %default-root-device)
                            (mount-point %root-path)

tests/system.scm

@@ -39,7 +39,7 @@ (define %os
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (file-systems (cons %root-fs %base-file-systems))
 
     (users %base-user-accounts)))
@@ -56,7 +56,7 @@ (define %os-with-mapped-device
     (locale "en_US.utf8")
     (bootloader (bootloader-configuration
                  (bootloader grub-bootloader)
-                 (target "/dev/sdX")))
+                 (targets '("/dev/sdX"))))
     (mapped-devices (list %luks-device))
     (file-systems (cons (file-system
                           (inherit %root-fs)