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+;; This is an operating system configuration template for testing postfix.
+
+(use-modules (gnu))
+(use-service-modules mail networking ssh)
+(use-package-modules ssh)
+
+(operating-system
+ (host-name "komputilo")
+ (timezone "Europe/Berlin")
+ (locale "en_US.utf8")
+
+ ;; Boot in "legacy" BIOS mode, 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)
+ (target "/dev/sdX")))
+
+ ;; Allow run-vm.sh --nographic
+ (kernel-arguments '("console=tty0" "console=ttyS0"))
+ (file-systems (cons (file-system
+ (device (file-system-label "guix"))
+ (mount-point "/")
+ (type "ext4"))
+ %base-file-systems))
+
+ ;; This is where user accounts are specified. The "root"
+ ;; account is implicit, and is initially created with the
+ ;; empty password.
+ (users (cons (user-account
+ (name "alice")
+ (comment "Bob's sister")
+ (group "users")
+
+ ;; Adding the account to the "wheel" group
+ ;; makes it a sudoer.
+ (supplementary-groups '("wheel")))
+ %base-user-accounts))
+
+ ;; Add services to the baseline: a DHCP client, POSTFIX and
+ ;; an SSH server.
+ (services (append (list (service dhcp-client-service-type)
+ (service openssh-service-type
+ (openssh-configuration
+ (openssh openssh-sans-x)
+ (use-pam? #f)
+ (port-number 2222)
+ (permit-root-login #t)
+ (allow-empty-passwords? #t)
+ (password-authentication? #t)))
+ (service postfix-service-type))
+ %base-services)))