bootloader: Use <menu-entry> for the bootloader side.

* gnu/bootloader.scm (menu-entry-device-mount-point): New variable.  Export it.
(<menu-entry>: New field "device".
* gnu/bootloader/grub.scm (grub-confgiuration-file): Handle <menu-entry>
entries.
* gnu/bootloader/extlinux.scm (extlinux-configuration-file): Handle
<menu-entry> entries.
* gnu/system.scm (menu->entry->boot-parameters): Delete variable.
(boot-parameters->menu-entry): New variable.  Export it.
(operating-system-bootcfg): Make OLD-ENTRIES a list of <menu-entry>.
* guix/script/system.scm (reinstall-bootloader): Fix bootcfg usage.
(perform-action): Fix bootcfg usage.

1 files changed, 3 insertions, 0 deletions

diff --git a/gnu/bootloader.scm b/gnu/bootloader.scm
index d5fcf30f056..e080b04568b 100644
--- a/gnu/bootloader.scm
+++ b/gnu/bootloader.scm
@@ -30,6 +30,7 @@
             menu-entry-linux
             menu-entry-linux-arguments
             menu-entry-initrd
+            menu-entry-device-mount-point
 
             bootloader
             bootloader?
@@ -67,6 +68,8 @@
   (label           menu-entry-label)
   (device          menu-entry-device       ; file system uuid, label, or #f
                    (default #f))
+  (device-mount-point menu-entry-device-mount-point
+                   (default #f))
   (linux           menu-entry-linux)
   (linux-arguments menu-entry-linux-arguments
                    (default '()))          ; list of string-valued gexps