Re: Adding chainloader stanzas to Grub

[Joshua Branson <jbranso@fastmail.com>]

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白い熊＠相撲道 <help-guix_gnu.org@sumou.com> writes:

> Hello:
>
> Is there a way to add full chainloader stanzas to Grub via the sysconfig file through system reconfigure in GuixSD. 

Why do you need to do a chainloader?  You could just boot into PureOS right?


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;; This is an operating system configuration template
;; for a "desktop" setup with GNOME and Xfce and awesome.
;; I am using this file as of July 2017

(use-modules (gnu)
             ;; this is not present in the desktop setup example in the info documentation
             ;;(guix)
             (gnu system nss)
             ;; lots of gnu services can be added via use-service-modules
             ;;(gnu services mcron)
             ;;I can include RSR5 modules via (ice-9 someName)
             ;; for pattern matching
             ;; (ice-9 match)
             )

(use-service-modules
 ;;admin
 ;;cups
 ;;databases
 desktop
 ;;dict
 ;;If I include networking I get an error about networking being included twice.
 ;;If I take it out then my dhcp-client service doesn't work anymore.
 ;;networking
 mcron
 ;; web is for nginx service
 ;; but for some reason nginx isn't working...
 web
 )

;;base and idutils are for mcron
(use-package-modules
 base
 certs
 ;;emacs
 ;;idutils
 gnome
 ;;gnuzilla
 fonts
 ;;version-control
 ;;wm
 ;;xorg
 web
 )

(define updatedb-job
  ;; Run 'updatedb' at 11AM every day.  Here we write the
  ;; job's action as a Scheme procedure.
  #~(job '(next-hour '(11))
         (lambda ()
           (execl (string-append #$findutils "/bin/updatedb")
                  "updatedb"
                  "--prunepaths=/tmp /var/tmp /gnu/store"))))

;; (define garbage-collector-job
;;   ;; Collect garbage at 11am every day.
;;   ;; The job's action is a shell command.
;;   #~(job "0 11 * * *"            ;Vixie cron syntax
;;          "guix gc -F 1G"))

;; (define idutils-job
;;   ;; Update the index database as user "charlie" at 12:15PM
;;   ;; and 19:15PM.  This runs from the user's home directory.
;;   #~(job '(next-minute-from (next-hour '(12 19)) '(15))
;;          (string-append #$idutils "/bin/mkid src")
;;          #:user "wes"))

;; here's how you would define a fish shell variable
;;(define %fishshell #~(string-append #$fish "/bin/fish"))

(operating-system
 (host-name "GuixSD")
 (timezone "America/Indianapolis")
 (locale "en_US.UTF-8")
 ;;blacklist this keyboard module.  It might help my mouse to load properly.
 ;;http://debbugs.gnu.org/cgi/bugreport.cgi?bug=20433
 ;;(kernel-arguments '("modprobe.blacklist=usbkdb"))
 ;;Apparently this bug was fixed...So I shouldn't blacklist it.  I'll have to file a bug report.
 (swap-devices '("/dev/sda3"))

 ;; Assuming /dev/sdX is the target hard disk, and "my-root"
 ;; is the label of the target root file system.
 (bootloader (bootloader-configuration
	      (bootloader grub-bootloader)
	      (menu-entries
	       (list (menu-entry
		      ;; specify that I want to boot Parabola as well.
		      (label "Parabola")
		      (linux "(hd0,1)/boot/vmlinuz-linux-libre")
		      (linux-arguments '("root=/dev/sda1 ro"))
		      (initrd "(hd0,1)/boot/initramfs-linux-libre.img"))))
	      (target "/dev/sda")))

 (file-systems (cons* (file-system
                       (device "my-root")
                       (title 'label)
                       (mount-point "/")
                       (type "ext4"))
                      (file-system
                       (mount-point "/home")
                       (device "/dev/sda4")
                       (type "ext4"))
                      %base-file-systems))

 (users (cons* (user-account
                (name "joshua")
                (comment "joshua")
                ;;I need to specify that joshua has the uid of 2000,
                ;; because the joshua an parabola has a uid of 2000
                ;; and guixSD and parabola share /home
                (uid 2000)
                (group "users")
                (supplementary-groups '("wheel" "netdev"
                                        "audio" "video" ))
                (home-directory "/home/joshua"))

               ;;I'm unable to login as joshua, because some weird issue.
               ;;I'll try creating a new user and see if that fixes things.
               (user-account
                (name "wes")
                (comment "wes")
                (uid 2025)
                (group "users")
                ;;(shell %fishshell)
                (supplementary-groups '("wheel" "netdev" "audio" "video"))
                (home-directory "/home/wes"))
               %base-user-accounts))

 (groups (cons*
      	  (user-group
                 (name "users")
                 ;;I need to specify that there is a users group on guixSD.
		 ;; Most of my files in my home directory are owned by the
		 ;; group users. I want that, because then I anyone anyone
		 ;; in the group users, can look at files owned by joshua and
		 ;; wes.
		 (id 2000))

                ;; Parabola wheel group has an id of 10
                ;; let's make guixSD use the same
                (user-group
                 (name "wheel")
                 (system? #t)
                 (id 10))

                %base-groups))
 ;; This is where we specify system-wide packages.
 (packages (cons*
            ;;awesome
            nss-certs         ;for HTTPS access
	    ;; I should not put packages like Emacs for icweasel here.
	    ;; the package groups will keep those.
            ;;fish
	    ;; I seet setxkbmap for swapping caps
            ;;setxkbmap
            gvfs  ;;for user mounts
            %base-packages))

 ;; Add GNOME -- We can choose at the log-in
 ;; screen with F1.  Use the "desktop" services, which
 ;; include the X11 log-in service, networking with Wicd,
 ;; and more.
 (services (cons* (gnome-desktop-service)
                  ;;make the console use the dvorak keyboard layout
                  (console-keymap-service "dvorak")
		  ;; attempting to make a nginx server
		  ;; (service nginx-service-type
		  ;;      (nginx-configuration
		  ;;       (server-blocks
		  ;;        (list (nginx-server-configuration
		  ;;   	    (server-name '("www.profile.com"))
		  ;;   	    (root "/home/wes/web/www.profile.com")
		  ;;   	    (https-port #f)
		  ;;   	    (ssl-certificate #f)
		  ;;   	    (ssl-certificate-key #f))))))

                  ;; add a dictionary service
                  ;;(dicod-service)
                  ;;this might not work
                  ;;(dhcp-client-service)
		  ;; rotate logs
                  ;;(service rottlog-service-type (rottlog-configuration))
                  ;;add a print server, that I'll probably never use
                  ;; to add a printer go to http://localhost:631
                  ;;(service cups-service-type (cups-configuration))
                  ;;(mysql-service)
                  ;; run guix gc everyday at 11am
                  (mcron-service (list updatedb-job))
                  %desktop-services))

 ;; Allow resolution of '.local' host names with mDNS.
 (name-service-switch %mdns-host-lookup-nss))

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>
> I'd like to have for instance the following entry added: 
>
> menuentry "PureOS on /dev/sda2" {
>    set root=(hd0,9)
>    chainloader +1
>    }

I'm attaching my config file, but my basic configuration to boot
straight from a different partition is:

 (bootloader (bootloader-configuration
	      (bootloader grub-bootloader)
	      (menu-entries
	       (list (menu-entry
		      ;; specify that I want to boot Parabola as well.
		      (label "Parabola")
		      (linux "(hd0,1)/boot/vmlinuz-linux-libre")
		      (linux-arguments '("root=/dev/sda1 ro"))
		      (initrd "(hd0,1)/boot/initramfs-linux-libre.img"))))
	      (target "/dev/sda")))


>
> Can I do this? 
> --
> 白い熊＠相撲道