me
/
guix
Archived
1
0
Fork 0
This repository has been archived on 2024-08-07. You can view files and clone it, but cannot push or open issues/pull-requests.
guix/gnu/system/install.scm

410 lines
16 KiB
Scheme
Raw Blame History

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2016 Andreas Enge <andreas@enge.fr>
;;;
;;; 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
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; 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 (guix gexp)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module ((guix store) #:select (%store-prefix))
#:use-module (guix profiles)
#:use-module (gnu services shepherd)
#:use-module (gnu packages admin)
#:use-module (gnu packages bash)
#:use-module (gnu packages linux)
#:use-module (gnu packages cryptsetup)
#:use-module (gnu packages package-management)
#:use-module (gnu packages disk)
#:use-module (gnu packages grub)
#: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 (self-contained-tarball
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* (self-contained-tarball #:key (guix guix))
"Return a self-contained tarball containing a store initialized with the
closure of GUIX. The tarball contains /gnu/store, /var/guix, and a profile
under /root/.guix-profile where GUIX is installed."
(mlet %store-monad ((profile (profile-derivation
(manifest
(list (package->manifest-entry guix))))))
(define build
(with-imported-modules '((guix build utils)
(guix build store-copy)
(gnu build install))
#~(begin
(use-modules (guix build utils)
(gnu build install))
(define %root "root")
(setenv "PATH"
(string-append #$guix "/sbin:" #$tar "/bin:" #$xz "/bin"))
;; Note: there is not much to gain here with deduplication and
;; there is the overhead of the '.links' directory, so turn it
;; off.
(populate-single-profile-directory %root
#:profile #$profile
#:closure "profile"
#:deduplicate? #f)
;; Create the tarball. Use GNU format so there's no file name
;; length limitation.
(with-directory-excursion %root
(zero? (system* "tar" "--xz" "--format=gnu"
;; Avoid non-determinism in the archive. Use
;; mtime = 1, not zero, because that is what the
;; daemon does for files in the store (see the
;; 'mtimeStore' constant in local-store.cc.)
"--sort=name"
"--mtime=@1" ;for files in /var/guix
"--owner=root:0"
"--group=root:0"
"--check-links"
"-cvf" #$output
;; Avoid adding / and /var to the tarball, so
;; that the ownership and permissions of those
;; directories will not be overwritten when
;; extracting the archive. Do not include /root
;; because the root account might have a
;; different home directory.
"./var/guix"
(string-append "." (%store-directory))))))))
(gexp->derivation "guix-tarball.tar.xz" build
#:references-graphs `(("profile" ,profile)))))
(define (log-to-info)
"Return a script that spawns the Info reader on the right section of the
manual."
(program-file "log-to-info"
#~(begin
;; 'gunzip' is needed to decompress the doc.
(setenv "PATH" (string-append #$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.
"/tmp/guix-inst")
(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 (unionfs read-only read-write mount-point)
;; Make MOUNT-POINT the union of READ-ONLY and READ-WRITE.
;; Note: in the command below, READ-WRITE appears before READ-ONLY so that
;; it is considered a "higher-level branch", as per unionfs-fuse(8),
;; thereby allowing files existing on READ-ONLY to be copied over to
;; READ-WRITE.
#~(fork+exec-command
(list (string-append #$unionfs-fuse "/bin/unionfs")
"-o"
"cow,allow_other,use_ino,max_files=65536,nonempty"
(string-append #$read-write "=RW:" #$read-only "=RO")
#$mount-point)))
(define (set-store-permissions directory)
;; Set the right perms on DIRECTORY to use it as the store.
#~(begin
(chown #$directory 0 30000) ;use the fixed 'guixbuild' GID
(chmod #$directory #o1775)))
#~(begin
;; Bind-mount TARGET's /tmp in case we need space to build things.
(let ((tmpdir (string-append #$target "/tmp")))
(mkdir-p tmpdir)
(mount tmpdir "/tmp" "none" MS_BIND))
(unless (file-exists? "/.ro-store")
(mkdir "/.ro-store")
(mount #$(%store-prefix) "/.ro-store" "none"
(logior MS_BIND MS_RDONLY)))
(let ((rw-dir (string-append target #$%backing-directory)))
(mkdir-p rw-dir)
(mkdir-p "/.rw-store")
#$(set-store-permissions #~rw-dir)
#$(set-store-permissions "/.rw-store")
;; Mount the union, then atomically make it the store.
(and #$(unionfs "/.ro-store" #~rw-dir "/.rw-store")
(begin
(sleep 1) ;XXX: wait for unionfs to be ready
(mount "/.rw-store" #$(%store-prefix) "" MS_MOVE)
(rmdir "/.rw-store"))))))
(define cow-store-service-type
(shepherd-service-type
'cow-store
(lambda _
(shepherd-service
(requirement '(root-file-system user-processes))
(provision '(cow-store))
(documentation
"Make the store copy-on-write, with writes going to \
the given target.")
;; This is meant to be explicitly started by the user.
(auto-start? #f)
(start #~(case-lambda
((target)
#$(make-cow-store #~target)
target)
(else
;; Do nothing, and mark the service as stopped.
#f)))
(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.
(delete-file-recursively
(string-append target #$%backing-directory))))))))
(define (cow-store-service)
"Return a service that makes the store copy-on-write, such that writes go to
the user's target storage device rather than on the RAM disk."
;; See <http://bugs.gnu.org/18061> for the initial report.
(service cow-store-service-type 'mooooh!))
(define (/etc/configuration-files _)
"Return a list of tuples representing configuration templates to add to
/etc."
(define (file f)
(local-file (string-append "examples/" f)))
(define directory
(computed-file "configuration-templates"
(with-imported-modules '((guix build utils))
#~(begin
(mkdir #$output)
(for-each (lambda (file target)
(copy-file file
(string-append #$output "/"
target)))
'(#$(file "bare-bones.tmpl")
#$(file "desktop.tmpl")
#$(file "lightweight-desktop.tmpl"))
'("bare-bones.scm"
"desktop.scm"
"lightweight-desktop.scm"))
#t))))
`(("configuration" ,directory)))
(define configuration-template-service-type
(service-type (name 'configuration-template)
(extensions
(list (service-extension etc-service-type
/etc/configuration-files)))))
(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" "
Welcome to the installation of the Guix System Distribution!
There 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.
")))
(define (normal-tty tty)
(mingetty-service (mingetty-configuration (tty tty)
(auto-login "root")
(login-pause? #t))))
(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.
%configuration-template-service
;; A bunch of 'root' ttys.
(normal-tty "tty3")
(normal-tty "tty4")
(normal-tty "tty5")
(normal-tty "tty6")
;; The usual services.
(syslog-service)
;; 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.
(cow-store-service)
;; Install Unicode support and a suitable font.
(service console-font-service-type
(map (lambda (tty)
(cons tty %default-console-font))
'("tty1" "tty2" "tty3" "tty4" "tty5" "tty6")))
;; To facilitate copy/paste.
(gpm-service)
;; Since this is running on a USB stick with a unionfs as the root
;; file system, use an appropriate cache configuration.
(nscd-service (nscd-configuration
(caches %nscd-minimal-caches))))))
(define %issue
;; Greeting.
"
This is an installation image of the GNU system. Welcome.
Use Alt-F2 for documentation.
")
(define installation-os
;; The operating system used on installation images for USB sticks etc.
(operating-system
(host-name "gnu")
(timezone "Europe/Paris")
(locale "en_US.utf8")
(bootloader (grub-configuration
(device "/dev/sda")))
(file-systems
;; Note: the disk image build code overrides this root file system with
;; the appropriate one.
(cons* (file-system
(mount-point "/")
(device "gnu-disk-image")
(title 'label)
(type "ext4"))
;; Make /tmp a tmpfs instead of keeping the unionfs. This is
;; 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>.
(file-system
(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
%shared-memory-file-system
%immutable-store)))
(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 so pass the empty list so we don't pull
;; additional programs here.
(setuid-programs '())
(pam-services
;; Explicitly allow for empty passwords.
(base-pam-services #:allow-empty-passwords? #t))
(packages (cons* (canonical-package glibc) ;for 'tzselect' & co.
parted ddrescue
grub ;mostly so xrefs to its manual work
cryptsetup
mdadm
dosfstools ;mkfs.fat, for the UEFI boot partition
btrfs-progs
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.
bash-completion
nvi ;:wq!
%base-packages))))
;; Return it here so 'guix system' can consume it directly.
installation-os
;;; install.scm ends here