Mirror of GNU Guix
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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2017 Marius Bakke <mbakke@fastmail.com>
;;; Copyright © 2017 Tobias Geerinckx-Rice <me@tobias.gr>
;;; This file is part of GNU Guix.
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; GNU General Public License for more details.
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu system install)
#:use-module (gnu)
#:use-module (gnu bootloader u-boot)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module ((guix store) #:select (%store-prefix))
#:use-module (gnu services shepherd)
#:use-module (gnu services ssh)
#:use-module (gnu packages admin)
#:use-module (gnu packages bash)
#:use-module (gnu packages bootloaders)
#:use-module (gnu packages guile)
#:use-module (gnu packages linux)
#:use-module (gnu packages ssh)
#:use-module (gnu packages cryptsetup)
#:use-module (gnu packages package-management)
#:use-module (gnu packages disk)
#:use-module (gnu packages texinfo)
#:use-module (gnu packages compression)
#:use-module (gnu packages nvi)
#:use-module (ice-9 match)
#:use-module (srfi srfi-26)
#:export (installation-os
;;; Commentary:
;;; This module provides an 'operating-system' definition for use on images
;;; for USB sticks etc., for the installation of the GNU system.
;;; Code:
(define (log-to-info)
"Return a script that spawns the Info reader on the right section of the
(program-file "log-to-info"
;; 'gunzip' is needed to decompress the doc.
(setenv "PATH" (string-append #$gzip "/bin"))
(execl (string-append #$info-reader "/bin/info") "info"
"-d" "/run/current-system/profile/share/info"
"-f" (string-append #$guix "/share/info/guix.info")
"-n" "System Installation"))))
(define %backing-directory
;; Sub-directory used as the backing store for copy-on-write.
(define (make-cow-store target)
"Return a gexp that makes the store copy-on-write, using TARGET as the
backing store. This is useful when TARGET is on a hard disk, whereas the
current store is on a RAM disk."
(define (set-store-permissions directory)
;; Set the right perms on DIRECTORY to use it as the store.
(chown #$directory 0 30000) ;use the fixed 'guixbuild' GID
(chmod #$directory #o1775)))
;; Bind-mount TARGET's /tmp in case we need space to build things.
(let ((tmpdir (string-append #$target "/tmp")))
(mkdir-p tmpdir)
(mount tmpdir "/tmp" "none" MS_BIND))
(let* ((rw-dir (string-append target #$%backing-directory))
(work-dir (string-append rw-dir "/../.overlayfs-workdir")))
(mkdir-p rw-dir)
(mkdir-p work-dir)
(mkdir-p "/.rw-store")
#$(set-store-permissions #~rw-dir)
#$(set-store-permissions "/.rw-store")
;; Mount the overlay, then atomically make it the store.
(mount "none" "/.rw-store" "overlay" 0
(string-append "lowerdir=" #$(%store-prefix) ","
"upperdir=" rw-dir ","
"workdir=" work-dir))
(mount "/.rw-store" #$(%store-prefix) "" MS_MOVE)
(rmdir "/.rw-store"))))
(define cow-store-service-type
(lambda _
(requirement '(root-file-system user-processes))
(provision '(cow-store))
"Make the store copy-on-write, with writes going to \
the given target.")
;; This is meant to be explicitly started by the user.
(auto-start? #f)
(start #~(case-lambda
#$(make-cow-store #~target)
;; Do nothing, and mark the service as stopped.
(stop #~(lambda (target)
;; Delete the temporary directory, but leave everything
;; mounted as there may still be processes using it since
;; 'user-processes' doesn't depend on us. The 'user-unmount'
;; service will unmount TARGET eventually.
(string-append target #$%backing-directory))))))))
(define (cow-store-service)
"Return a service that makes the store copy-on-write, such that writes go to
the user's target storage device rather than on the RAM disk."
;; See <http://bugs.gnu.org/18061> for the initial report.
(service cow-store-service-type 'mooooh!))
(define (/etc/configuration-files _)
"Return a list of tuples representing configuration templates to add to
(define (file f)
(local-file (string-append "examples/" f)))
(define directory
(computed-file "configuration-templates"
(with-imported-modules '((guix build utils))
(mkdir #$output)
(for-each (lambda (file target)
(copy-file file
(string-append #$output "/"
'(#$(file "bare-bones.tmpl")
#$(file "beaglebone-black.tmpl")
#$(file "desktop.tmpl")
#$(file "lightweight-desktop.tmpl"))
`(("configuration" ,directory)))
(define configuration-template-service-type
(service-type (name 'configuration-template)
(list (service-extension etc-service-type
(define %configuration-template-service
(service configuration-template-service-type #t))
(define %nscd-minimal-caches
;; Minimal in-memory caching policy for nscd.
(list (nscd-cache (database 'hosts)
(positive-time-to-live (* 3600 12))
;; Do not cache lookup failures at all since they are
;; quite likely (for instance when someone tries to ping a
;; host before networking is functional.)
(negative-time-to-live 0)
(persistent? #f)
(max-database-size (* 5 (expt 2 20)))))) ;5 MiB
(define %installation-services
;; List of services of the installation system.
(let ((motd (plain-file "motd" "
\x1b[1;37mWelcome to the installation of the Guix System Distribution!\x1b[0m
\x1b[2mThere is NO WARRANTY, to the extent permitted by law. In particular, you may
LOSE ALL YOUR DATA as a side effect of the installation process. Furthermore,
it is 'beta' software, so it may contain bugs.
You have been warned. Thanks for being so brave.\x1b[0m
(define (normal-tty tty)
(mingetty-service (mingetty-configuration (tty tty)
(auto-login "root")
(login-pause? #t))))
(define bare-bones-os
(load "examples/bare-bones.tmpl"))
(list (mingetty-service (mingetty-configuration
(tty "tty1")
(auto-login "root")))
(login-service (login-configuration
(motd motd)))
;; Documentation. The manual is in UTF-8, but
;; 'console-font-service' sets up Unicode support and loads a font
;; with all the useful glyphs like em dash and quotation marks.
(mingetty-service (mingetty-configuration
(tty "tty2")
(auto-login "guest")
(login-program (log-to-info))))
;; Documentation add-on.
;; A bunch of 'root' ttys.
(normal-tty "tty3")
(normal-tty "tty4")
(normal-tty "tty5")
(normal-tty "tty6")
;; The usual services.
;; The build daemon. Register the hydra.gnu.org key as trusted.
;; This allows the installation process to use substitutes by
;; default.
(guix-service (guix-configuration (authorize-key? #t)))
;; Start udev so that useful device nodes are available.
;; Use device-mapper rules for cryptsetup & co; enable the CRDA for
;; regulations-compliant WiFi access.
(udev-service #:rules (list lvm2 crda))
;; Add the 'cow-store' service, which users have to start manually
;; since it takes the installation directory as an argument.
;; Install Unicode support and a suitable font. Use a font that
;; doesn't have more than 256 glyphs so that we can use colors with
;; varying brightness levels (see note in setfont(8)).
(service console-font-service-type
(map (lambda (tty)
(cons tty "lat9u-16"))
'("tty1" "tty2" "tty3" "tty4" "tty5" "tty6")))
;; To facilitate copy/paste.
;; Add an SSH server to facilitate remote installs.
(service openssh-service-type
(port-number 22)
(permit-root-login #t)
;; The root account is passwordless, so make sure
;; a password is set before allowing logins.
(allow-empty-passwords? #f)
(password-authentication? #t)
;; Don't start it upfront.
(%auto-start? #f)))
;; Since this is running on a USB stick with a overlayfs as the root
;; file system, use an appropriate cache configuration.
(nscd-service (nscd-configuration
(caches %nscd-minimal-caches)))
;; Having /bin/sh is a good idea. In particular it allows Tramp
;; connections to this system to work.
(service special-files-service-type
`(("/bin/sh" ,(file-append (canonical-package bash)
;; Keep a reference to BARE-BONES-OS to make sure it can be
;; installed without downloading/building anything. Also keep the
;; things needed by 'profile-derivation' to minimize the amount of
;; download.
(service gc-root-service-type
(list bare-bones-os
(canonical-package guile-2.2))))))
(define %issue
;; Greeting.
\x1b[1;37mThis is an installation image of the GNU system. Welcome.\x1b[0m
\x1b[1;33mUse Alt-F2 for documentation.\x1b[0m
(define installation-os
;; The operating system used on installation images for USB sticks etc.
(host-name "gnu")
(timezone "Europe/Paris")
(locale "en_US.utf8")
(bootloader (bootloader-configuration
(bootloader grub-bootloader)
(target "/dev/sda")))
;; Note: the disk image build code overrides this root file system with
;; the appropriate one.
(cons* (file-system
(mount-point "/")
(device "GuixSD_image")
(title 'label)
(type "ext4"))
;; Make /tmp a tmpfs instead of keeping the overlayfs. This
;; originally was used for unionfs because FUSE creates
;; '.fuse_hiddenXYZ' files for each open file, and this confuses
;; Guix's test suite, for instance (see
;; <http://bugs.gnu.org/23056>). We keep this for overlayfs to be
;; on the safe side.
(mount-point "/tmp")
(device "none")
(title 'device)
(type "tmpfs")
(check? #f))
;; XXX: This should be %BASE-FILE-SYSTEMS but we don't need
;; elogind's cgroup file systems.
(list %pseudo-terminal-file-system
(users (list (user-account
(name "guest")
(group "users")
(supplementary-groups '("wheel")) ; allow use of sudo
(password "")
(comment "Guest of GNU")
(home-directory "/home/guest"))))
(issue %issue)
(services %installation-services)
;; We don't need setuid programs, except for 'passwd', which can be handy
;; if one is to allow remote SSH login to the machine being installed.
(setuid-programs (list (file-append shadow "/bin/passwd")))
;; Explicitly allow for empty passwords.
(base-pam-services #:allow-empty-passwords? #t))
(packages (cons* (canonical-package glibc) ;for 'tzselect' & co.
parted gptfdisk ddrescue
grub ;mostly so xrefs to its manual work
dosfstools ;mkfs.fat, for the UEFI boot partition
openssh ;we already have sshd, having ssh/scp can help
wireless-tools iw wpa-supplicant-minimal iproute
;; XXX: We used to have GNU fdisk here, but as of version
;; 2.0.0a, that pulls Guile 1.8, which takes unreasonable
;; space; furthermore util-linux's fdisk is already
;; available here, so we keep that.
nvi ;:wq!
(define beaglebone-black-installation-os
(inherit installation-os)
(bootloader (bootloader-configuration
(bootloader u-boot-beaglebone-black-bootloader)
(target "/dev/sda")))
(kernel linux-libre)
(initrd (lambda (fs . rest)
(apply base-initrd fs
;; This module is required to mount the sd card.
#:extra-modules (list "omap_hsmmc")
(services (append
;; mingetty does not work on serial lines.
;; Use agetty with board-specific serial parameters.
(list (agetty-service
(extra-options '("-L"))
(baud-rate "115200")
(term "vt100")
(tty "ttyO0"))))
(operating-system-user-services installation-os)))))
(define a20-olinuxino-lime2-emmc-installation-os
(inherit installation-os)
(bootloader (bootloader-configuration
(bootloader u-boot-a20-olinuxino-lime2-bootloader)
(target "/dev/mmcblk1"))) ; eMMC storage
(kernel linux-libre)
(services (append
(list (agetty-service
(extra-options '("-L"))
(baud-rate "115200")
(term "vt100")
(tty "ttyS0"))))
(operating-system-user-services installation-os)))))
(define a20-olinuxino-micro-installation-os
(inherit installation-os)
(bootloader (bootloader-configuration
(bootloader u-boot-a20-olinuxino-lime2-bootloader)
(target "/dev/mmcblk0"))) ; SD card storage
(kernel linux-libre)
(services (append
(list (agetty-service
(extra-options '("-L"))
(baud-rate "115200")
(term "vt100")
(tty "ttyS0"))))
(operating-system-user-services installation-os)))))
(define banana-pi-m2-ultra-installation-os
(inherit installation-os)
(bootloader (bootloader-configuration
(bootloader u-boot-banana-pi-m2-ultra-bootloader)
(target "/dev/mmcblk1"))) ; eMMC storage
(kernel linux-libre)
(services (append
(list (agetty-service
(extra-options '("-L"))
(baud-rate "115200")
(term "vt100")
(tty "ttyS0"))))
(operating-system-user-services installation-os)))))
;; Return the default os here so 'guix system' can consume it directly.
;;; install.scm ends here