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;; -*- mode: scheme; -*-
;; This is an operating system configuration for a VM image.
;; Modify it as you see fit and instantiate the changes by running:
;;
;; guix system reconfigure /etc/config.scm
;;
(use-modules (gnu) (guix) (srfi srfi-1))
(use-service-modules desktop mcron networking spice ssh xorg sddm)
(use-package-modules bootloaders certs fonts nvi
package-management wget xorg)
(define vm-image-motd (plain-file "motd" "
\x1b[1;37mThis is the GNU system. Welcome!\x1b[0m
This instance of Guix is a template for virtualized environments.
You can reconfigure the whole system by adjusting /etc/config.scm
and running:
guix system reconfigure /etc/config.scm
Run '\x1b[1;37minfo guix\x1b[0m' to browse documentation.
\x1b[1;33mConsider setting a password for the 'root' and 'guest' \
accounts.\x1b[0m
"))
;;; XXX: Xfce does not implement what is needed for the SPICE dynamic
;;; resolution to work (see:
;;; https://gitlab.xfce.org/xfce/xfce4-settings/-/issues/142). Workaround it
;;; by manually invoking xrandr every second.
(define auto-update-resolution-crutch
#~(job '(next-second)
(lambda ()
(setenv "DISPLAY" ":0.0")
(setenv "XAUTHORITY" "/home/guest/.Xauthority")
(execl (string-append #$xrandr "/bin/xrandr") "xrandr" "-s" "0"))
#:user "guest"))
(operating-system
(host-name "gnu")
(timezone "Etc/UTC")
(locale "en_US.utf8")
(keyboard-layout (keyboard-layout "us" "altgr-intl"))
;; Label for the GRUB boot menu.
(label (string-append "GNU Guix "
(or (getenv "GUIX_DISPLAYED_VERSION")
(package-version guix))))
(firmware '())
;; Below we assume /dev/vda is the VM's hard disk.
;; Adjust as needed.
(bootloader (bootloader-configuration
(bootloader grub-bootloader)
(targets '("/dev/vda"))
(terminal-outputs '(console))))
(file-systems (cons (file-system
(mount-point "/")
(device "/dev/vda1")
(type "ext4"))
%base-file-systems))
(users (cons (user-account
(name "guest")
(comment "GNU Guix Live")
(password "") ;no password
(group "users")
(supplementary-groups '("wheel" "netdev"
"audio" "video")))
%base-user-accounts))
;; Our /etc/sudoers file. Since 'guest' initially has an empty password,
;; allow for password-less sudo.
(sudoers-file (plain-file "sudoers" "\
root ALL=(ALL) ALL
%wheel ALL=NOPASSWD: ALL\n"))
(packages (append (list font-bitstream-vera nss-certs nvi wget)
%base-packages))
(services
(append (list (service xfce-desktop-service-type)
;; Choose SLiM, which is lighter than the default GDM.
(service slim-service-type
(slim-configuration
(auto-login? #t)
(default-user "guest")
(xorg-configuration
(xorg-configuration
;; The QXL virtual GPU driver is added to provide
;; a better SPICE experience.
(modules (cons xf86-video-qxl
%default-xorg-modules))
(keyboard-layout keyboard-layout)))))
;; Uncomment the line below to add an SSH server.
;;(service openssh-service-type)
;; Add support for the SPICE protocol, which enables dynamic
;; resizing of the guest screen resolution, clipboard
;; integration with the host, etc.
(service spice-vdagent-service-type)
(simple-service 'cron-jobs mcron-service-type
(list auto-update-resolution-crutch))
;; Use the DHCP client service rather than NetworkManager.
(service dhcp-client-service-type))
;; Remove some services that don't make sense in a VM.
(remove (lambda (service)
(let ((type (service-kind service)))
(or (memq type
(list gdm-service-type
sddm-service-type
wpa-supplicant-service-type
cups-pk-helper-service-type
network-manager-service-type
modem-manager-service-type))
(eq? 'network-manager-applet
(service-type-name type)))))
(modify-services %desktop-services
(login-service-type config =>
(login-configuration
(inherit config)
(motd vm-image-motd)))
;; Install and run the current Guix rather than an older
;; snapshot.
(guix-service-type config =>
(guix-configuration
(inherit config)
(guix (current-guix))))))))
;; Allow resolution of '.local' host names with mDNS.
(name-service-switch %mdns-host-lookup-nss))
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