minimal guix operating system configuration

skeleton.scm

(use-modules (gnu bootloader))
(use-modules (gnu bootloader grub))
(use-modules (gnu system file-systems))

(operating-system
  (bootloader
    (bootloader-configuration
      (bootloader grub-bootloader)
      (targets (list "/dev/sda"))))
  (host-name "")
  (file-systems
    (cons* (file-system
             (mount-point "/")
             (device "/dev/sda")
             (type "btrfs"))
           %base-file-systems)))