1403 lines
57 KiB
Scheme
1403 lines
57 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
|
||
;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2016 Alex Kost <alezost@gmail.com>
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;;; Copyright © 2016, 2017, 2018 Chris Marusich <cmmarusich@gmail.com>
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;;; Copyright © 2017, 2019 Mathieu Othacehe <m.othacehe@gmail.com>
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;;; Copyright © 2018 Ricardo Wurmus <rekado@elephly.net>
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;;; Copyright © 2019 Christopher Baines <mail@cbaines.net>
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;;; Copyright © 2020 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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;;; Copyright © 2020 Julien Lepiller <julien@lepiller.eu>
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;;; Copyright © 2020 Efraim Flashner <efraim@flashner.co.il>
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;;; Copyright © 2021 Brice Waegeneire <brice@waegenei.re>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (guix scripts system)
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#:use-module (guix config)
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#:use-module (guix ui)
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#:use-module ((guix status) #:select (with-status-verbosity))
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#:use-module (guix store)
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#:autoload (guix base16) (bytevector->base16-string)
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#:autoload (guix store database)
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(sqlite-register store-database-file call-with-database)
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#:autoload (guix build store-copy) (copy-store-item)
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#:use-module (guix describe)
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#:use-module (guix grafts)
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#:use-module (guix gexp)
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#:use-module (guix derivations)
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#:use-module (guix packages)
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#:use-module (guix utils)
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#:use-module (guix monads)
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#:use-module (guix records)
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#:use-module (guix profiles)
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#:use-module (guix scripts)
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#:use-module (guix channels)
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#:use-module (guix scripts build)
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#:autoload (guix scripts package) (delete-generations
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delete-matching-generations)
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#:autoload (guix scripts pull) (channel-commit-hyperlink)
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#:autoload (guix graph) (export-graph node-type
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graph-backend-name %graph-backends)
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#:use-module (guix scripts graph)
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#:use-module (guix scripts system reconfigure)
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#:use-module (guix build utils)
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#:use-module (guix progress)
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#:use-module ((guix build syscalls) #:select (terminal-columns))
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#:use-module (gnu build install)
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#:autoload (gnu build file-systems)
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(find-partition-by-label find-partition-by-uuid)
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#:autoload (gnu build linux-modules)
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(device-module-aliases matching-modules)
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#:use-module (gnu system linux-initrd)
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#:use-module (gnu image)
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#:use-module (gnu system)
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#:use-module (gnu bootloader)
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#:use-module (gnu system file-systems)
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#:use-module (gnu system image)
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#:use-module (gnu system mapped-devices)
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#:use-module (gnu system linux-container)
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#:use-module (gnu system uuid)
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#:use-module (gnu system vm)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services herd)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-19)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module (srfi srfi-37)
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#:use-module (ice-9 format)
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#:use-module (ice-9 match)
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#:use-module (rnrs bytevectors)
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#:export (guix-system
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read-operating-system))
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;;;
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;;; Operating system declaration.
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;;;
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(define %user-module
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;; Module in which the machine description file is loaded.
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(make-user-module '((gnu system)
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(gnu services)
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(gnu system shadow))))
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(define (read-operating-system file)
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"Read the operating-system declaration from FILE and return it."
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(load* file %user-module))
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;;;
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;;; Installation.
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;;;
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(define-syntax-rule (save-load-path-excursion body ...)
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"Save the current values of '%load-path' and '%load-compiled-path', run
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BODY..., and restore them."
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(let ((path %load-path)
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(cpath %load-compiled-path))
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(dynamic-wind
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(const #t)
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(lambda ()
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body ...)
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(lambda ()
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(set! %load-path path)
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(set! %load-compiled-path cpath)))))
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||
(define-syntax-rule (save-environment-excursion body ...)
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"Save the current environment variables, run BODY..., and restore them."
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(let ((env (environ)))
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(dynamic-wind
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(const #t)
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(lambda ()
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body ...)
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(lambda ()
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(environ env)))))
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(define topologically-sorted*
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(store-lift topologically-sorted))
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(define* (copy-item item info target db
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#:key (log-port (current-error-port)))
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"Copy ITEM to the store under root directory TARGET and populate DB with the
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given INFO, a <path-info> record."
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(let ((dest (string-append target item)))
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(format log-port "copying '~a'...~%" item)
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;; Remove DEST if it exists to make sure that (1) we do not fail badly
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;; while trying to overwrite it (see <http://bugs.gnu.org/20722>), and
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;; (2) we end up with the right contents.
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(when (false-if-exception (lstat dest))
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(for-each make-file-writable
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(find-files dest (lambda (file stat)
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(eq? 'directory (stat:type stat)))
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#:directories? #t))
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(delete-file-recursively dest))
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(copy-store-item item target
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#:deduplicate? #t)
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(sqlite-register db
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#:path item
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#:references (path-info-references info)
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#:deriver (path-info-deriver info)
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#:hash (string-append
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"sha256:"
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(bytevector->base16-string (path-info-hash info)))
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#:nar-size (path-info-nar-size info))))
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(define* (copy-closure item target
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#:key (log-port (current-error-port)))
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"Copy ITEM and all its dependencies to the store under root directory
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TARGET, and register them."
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(mlet* %store-monad ((to-copy (topologically-sorted* (list item)))
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(info (mapm %store-monad query-path-info* to-copy))
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(size -> (reduce + 0 (map path-info-nar-size info))))
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(define progress-bar
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(progress-reporter/bar (length to-copy)
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(format #f (G_ "copying to '~a'...")
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target)))
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(define state
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(string-append target "/var/guix"))
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(check-available-space size target)
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;; Explicitly use "TARGET/var/guix" as the state directory to avoid
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;; reproducing the user's current settings; see
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;; <http://bugs.gnu.org/18049>.
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(call-with-database (store-database-file #:prefix target
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#:state-directory state)
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(lambda (db)
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(call-with-progress-reporter progress-bar
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(lambda (report)
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(let ((void (%make-void-port "w")))
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(for-each (lambda (item info)
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(copy-item item info target db #:log-port void)
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(report))
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to-copy info))))))
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(return *unspecified*)))
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(define* (install os-drv target
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#:key (log-port (current-output-port))
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install-bootloader? bootloader bootcfg)
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"Copy the closure of BOOTCFG, which includes the output of OS-DRV, to
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directory TARGET. TARGET must be an absolute directory name since that's what
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'register-path' expects.
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When INSTALL-BOOTLOADER? is true, install bootloader using BOOTCFG."
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(define (maybe-copy to-copy)
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(with-monad %store-monad
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(if (string=? target "/")
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(begin
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(warning (G_ "initializing the current root file system~%"))
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(return #t))
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(begin
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;; Make sure the target store exists.
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(mkdir-p (string-append target (%store-prefix)))
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;; Copy items to the new store.
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(copy-closure to-copy target #:log-port log-port)))))
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;; Make sure TARGET is root-owned when running as root, but still allow
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;; non-root uses (useful for testing.) See
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;; <http://lists.gnu.org/archive/html/guix-devel/2015-05/msg00452.html>.
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(if (zero? (geteuid))
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(chown target 0 0)
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(warning (G_ "not running as 'root', so \
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the ownership of '~a' may be incorrect!~%")
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target))
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;; If a previous installation was attempted, make sure we start anew; in
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;; particular, we don't want to keep a store database that might not
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;; correspond to what we're actually putting in the store.
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(let ((state (string-append target "/var/guix")))
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(when (file-exists? state)
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(delete-file-recursively state)))
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(chmod target #o755)
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(let ((os-dir (derivation->output-path os-drv))
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(format (lift format %store-monad))
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(populate (lift2 populate-root-file-system %store-monad)))
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(mlet %store-monad ((bootcfg (lower-object bootcfg)))
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(mbegin %store-monad
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;; Copy the closure of BOOTCFG, which includes OS-DIR,
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;; eventual background image and so on.
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(maybe-copy (derivation->output-path bootcfg))
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;; Create a bunch of additional files.
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(format log-port "populating '~a'...~%" target)
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(populate os-dir target)
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(mwhen install-bootloader?
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(install-bootloader local-eval bootloader bootcfg
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#:target target)
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(return
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(info (G_ "bootloader successfully installed on '~a'~%")
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(bootloader-configuration-target bootloader))))))))
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||
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;;;
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;;; Reconfiguration.
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;;;
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(define %system-profile
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;; The system profile.
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(string-append %state-directory "/profiles/system"))
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(define-syntax-rule (with-shepherd-error-handling mbody ...)
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"Catch and report Shepherd errors that arise when binding MBODY, a monadic
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expression in %STORE-MONAD."
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(lambda (store)
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(catch 'system-error
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(lambda ()
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(guard (c ((shepherd-error? c)
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(values (report-shepherd-error c) store)))
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(values (run-with-store store (mbegin %store-monad mbody ...))
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store)))
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(lambda (key proc format-string format-args errno . rest)
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(warning (G_ "while talking to shepherd: ~a~%")
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(apply format #f format-string format-args))
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(values #f store)))))
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(define (report-shepherd-error error)
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"Report ERROR, a '&shepherd-error' error condition object."
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(when error
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(cond ((service-not-found-error? error)
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(warning (G_ "service '~a' could not be found~%")
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(service-not-found-error-service error)))
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((action-not-found-error? error)
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(warning (G_ "service '~a' does not have an action '~a'~%")
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(action-not-found-error-service error)
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(action-not-found-error-action error)))
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((action-exception-error? error)
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(warning (G_ "exception caught while executing '~a' \
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on service '~a':~%")
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(action-exception-error-action error)
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(action-exception-error-service error))
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(print-exception (current-error-port) #f
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(action-exception-error-key error)
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(action-exception-error-arguments error)))
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((unknown-shepherd-error? error)
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(warning (G_ "something went wrong: ~s~%")
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(unknown-shepherd-error-sexp error)))
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((shepherd-error? error)
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(warning (G_ "shepherd error~%"))))
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;; Don't leave users out in the cold and explain what that means and what
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;; they can do.
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(warning (G_ "some services could not be upgraded~%"))
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(display-hint (G_ "To allow changes to all the system services to take
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effect, you will need to reboot."))))
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||
|
||
(define-syntax-rule (unless-file-not-found exp)
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(catch 'system-error
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(lambda ()
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exp)
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(lambda args
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(if (= ENOENT (system-error-errno args))
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#f
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(apply throw args)))))
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||
|
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(define (seconds->string seconds)
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"Return a string representing the date for SECONDS."
|
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(let ((time (make-time time-utc 0 seconds)))
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(date->string (time-utc->date time)
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"~Y-~m-~d ~H:~M")))
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||
|
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(define* (profile-boot-parameters #:optional (profile %system-profile)
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(numbers
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(reverse (generation-numbers profile))))
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"Return a list of 'boot-parameters' for the generations of PROFILE specified
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by NUMBERS, which is a list of generation numbers. The list is ordered from
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the most recent to the oldest profiles."
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(define (system->boot-parameters system number time)
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(unless-file-not-found
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(let* ((params (read-boot-parameters-file system))
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(label (boot-parameters-label params)))
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(boot-parameters
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(inherit params)
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(label (string-append label " (#"
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(number->string number) ", "
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(seconds->string time) ")"))))))
|
||
(let* ((systems (map (cut generation-file-name profile <>)
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numbers))
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(times (map (lambda (system)
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(unless-file-not-found
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(stat:mtime (lstat system))))
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systems)))
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(filter-map system->boot-parameters systems numbers times)))
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||
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;;;
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;;; Roll-back.
|
||
;;;
|
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(define (roll-back-system store)
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"Roll back the system profile to its previous generation. STORE is an open
|
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connection to the store."
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(switch-to-system-generation store "-1"))
|
||
|
||
|
||
;;;
|
||
;;; Switch generations.
|
||
;;;
|
||
(define (switch-to-system-generation store spec)
|
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"Switch the system profile to the generation specified by SPEC, and
|
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re-install bootloader with a configuration file that uses the specified system
|
||
generation as its default entry. STORE is an open connection to the store."
|
||
(let* ((number (relative-generation-spec->number %system-profile spec))
|
||
(generation (generation-file-name %system-profile number))
|
||
(activate (string-append generation "/activate")))
|
||
(if number
|
||
(begin
|
||
(reinstall-bootloader store number)
|
||
(switch-to-generation* %system-profile number)
|
||
(unless-file-not-found (primitive-load activate)))
|
||
(leave (G_ "cannot switch to system generation '~a'~%") spec))))
|
||
|
||
(define* (system-bootloader-name #:optional (system %system-profile))
|
||
"Return the bootloader name stored in SYSTEM's \"parameters\" file."
|
||
(let ((params (unless-file-not-found
|
||
(read-boot-parameters-file system))))
|
||
(boot-parameters-bootloader-name params)))
|
||
|
||
(define (reinstall-bootloader store number)
|
||
"Re-install bootloader for existing system profile generation NUMBER.
|
||
STORE is an open connection to the store."
|
||
(let* ((generation (generation-file-name %system-profile number))
|
||
;; Detect the bootloader used in %system-profile.
|
||
(bootloader (lookup-bootloader-by-name (system-bootloader-name)))
|
||
|
||
;; Use the detected bootloader with default configuration.
|
||
;; It will be enough to allow the system to boot.
|
||
(bootloader-config (bootloader-configuration
|
||
(bootloader bootloader)))
|
||
|
||
;; Make the specified system generation the default entry.
|
||
(params (first (profile-boot-parameters %system-profile
|
||
(list number))))
|
||
(locale (boot-parameters-locale params))
|
||
(store-crypto-devices (boot-parameters-store-crypto-devices params))
|
||
(store-directory-prefix
|
||
(boot-parameters-store-directory-prefix params))
|
||
(old-generations
|
||
(delv number (reverse (generation-numbers %system-profile))))
|
||
(old-params (profile-boot-parameters
|
||
%system-profile old-generations))
|
||
(entries (cons (boot-parameters->menu-entry params)
|
||
(boot-parameters-bootloader-menu-entries params)))
|
||
(old-entries (map boot-parameters->menu-entry old-params)))
|
||
(run-with-store store
|
||
(mlet* %store-monad
|
||
((bootcfg (lower-object
|
||
((bootloader-configuration-file-generator bootloader)
|
||
bootloader-config entries
|
||
#:locale locale
|
||
#:store-crypto-devices store-crypto-devices
|
||
#:store-directory-prefix store-directory-prefix
|
||
#:old-entries old-entries)))
|
||
(drvs -> (list bootcfg)))
|
||
(mbegin %store-monad
|
||
(built-derivations drvs)
|
||
;; Only install bootloader configuration file.
|
||
(install-bootloader local-eval bootloader-config bootcfg
|
||
#:run-installer? #f))))))
|
||
|
||
|
||
;;;
|
||
;;; Graphs.
|
||
;;;
|
||
|
||
(define (service-node-label service)
|
||
"Return a label to represent SERVICE."
|
||
(let ((type (service-kind service))
|
||
(value (service-value service)))
|
||
(string-append (symbol->string (service-type-name type))
|
||
(cond ((or (number? value) (symbol? value))
|
||
(string-append " " (object->string value)))
|
||
((string? value)
|
||
(string-append " " value))
|
||
((file-system? value)
|
||
(string-append " " (file-system-mount-point value)))
|
||
(else
|
||
"")))))
|
||
|
||
(define (service-node-type services)
|
||
"Return a node type for SERVICES. Since <service> instances are not
|
||
self-contained (they express dependencies on service types, not on services),
|
||
we have to create the 'edges' procedure dynamically as a function of the full
|
||
list of services."
|
||
(node-type
|
||
(name "service")
|
||
(description "the DAG of services")
|
||
(identifier (lift1 object-address %store-monad))
|
||
(label service-node-label)
|
||
(edges (lift1 (service-back-edges services) %store-monad))))
|
||
|
||
(define (shepherd-service-node-label service)
|
||
"Return a label for a node representing a <shepherd-service>."
|
||
(string-join (map symbol->string (shepherd-service-provision service))))
|
||
|
||
(define (shepherd-service-node-type services)
|
||
"Return a node type for SERVICES, a list of <shepherd-service>."
|
||
(node-type
|
||
(name "shepherd-service")
|
||
(description "the dependency graph of shepherd services")
|
||
(identifier (lift1 shepherd-service-node-label %store-monad))
|
||
(label shepherd-service-node-label)
|
||
(edges (lift1 (shepherd-service-back-edges services) %store-monad))))
|
||
|
||
|
||
;;;
|
||
;;; Generations.
|
||
;;;
|
||
|
||
(define* (display-system-generation number
|
||
#:optional (profile %system-profile))
|
||
"Display a summary of system generation NUMBER in a human-readable format."
|
||
(define (display-channel channel)
|
||
(format #t " ~a:~%" (channel-name channel))
|
||
(format #t (G_ " repository URL: ~a~%") (channel-url channel))
|
||
(when (channel-branch channel)
|
||
(format #t (G_ " branch: ~a~%") (channel-branch channel)))
|
||
(format #t (G_ " commit: ~a~%")
|
||
(if (supports-hyperlinks?)
|
||
(channel-commit-hyperlink channel)
|
||
(channel-commit channel))))
|
||
|
||
(unless (zero? number)
|
||
(let* ((generation (generation-file-name profile number))
|
||
(params (read-boot-parameters-file generation))
|
||
(label (boot-parameters-label params))
|
||
(bootloader-name (boot-parameters-bootloader-name params))
|
||
(root (boot-parameters-root-device params))
|
||
(root-device (if (bytevector? root)
|
||
(uuid->string root)
|
||
root))
|
||
(kernel (boot-parameters-kernel params))
|
||
(multiboot-modules (boot-parameters-multiboot-modules params)))
|
||
(define-values (channels config-file)
|
||
(system-provenance generation))
|
||
|
||
(display-generation profile number)
|
||
(format #t (G_ " file name: ~a~%") generation)
|
||
(format #t (G_ " canonical file name: ~a~%") (readlink* generation))
|
||
;; TRANSLATORS: Please preserve the two-space indentation.
|
||
(format #t (G_ " label: ~a~%") label)
|
||
(format #t (G_ " bootloader: ~a~%") bootloader-name)
|
||
|
||
;; TRANSLATORS: The '~[', '~;', and '~]' sequences in this string must
|
||
;; be preserved. They denote conditionals, such that the result will
|
||
;; look like:
|
||
;; root device: UUID: 12345-678
|
||
;; or:
|
||
;; root device: label: "my-root"
|
||
;; or just:
|
||
;; root device: /dev/sda3
|
||
(format #t (G_ " root device: ~[UUID: ~a~;label: ~s~;~a~]~%")
|
||
(cond ((uuid? root-device) 0)
|
||
((file-system-label? root-device) 1)
|
||
(else 2))
|
||
(file-system-device->string root-device))
|
||
|
||
(format #t (G_ " kernel: ~a~%") kernel)
|
||
|
||
(match multiboot-modules
|
||
(() #f)
|
||
(((modules . _) ...)
|
||
(format #t (G_ " multiboot: ~a~%")
|
||
(string-join modules "\n "))))
|
||
|
||
(unless (null? channels)
|
||
;; TRANSLATORS: Here "channel" is the same terminology as used in
|
||
;; "guix describe" and "guix pull --channels".
|
||
(format #t (G_ " channels:~%"))
|
||
(for-each display-channel channels))
|
||
(when config-file
|
||
(format #t (G_ " configuration file: ~a~%")
|
||
(if (supports-hyperlinks?)
|
||
(file-hyperlink config-file)
|
||
config-file))))))
|
||
|
||
(define* (list-generations pattern #:optional (profile %system-profile))
|
||
"Display in a human-readable format all the system generations matching
|
||
PATTERN, a string. When PATTERN is #f, display all the system generations."
|
||
(cond ((not (file-exists? profile)) ; XXX: race condition
|
||
(raise (condition (&profile-not-found-error
|
||
(profile profile)))))
|
||
((not pattern)
|
||
(for-each display-system-generation (profile-generations profile)))
|
||
((matching-generations pattern profile)
|
||
=>
|
||
(lambda (numbers)
|
||
(if (null-list? numbers)
|
||
(exit 1)
|
||
(leave-on-EPIPE
|
||
(for-each display-system-generation numbers)))))))
|
||
|
||
|
||
;;;
|
||
;;; File system declaration checks.
|
||
;;;
|
||
|
||
(define (check-file-system-availability file-systems)
|
||
"Check whether the UUIDs or partition labels that FILE-SYSTEMS refer to, if
|
||
any, are available. Raise an error if they're not."
|
||
(define relevant
|
||
(filter (lambda (fs)
|
||
(and (file-system-mount? fs)
|
||
(not (member (file-system-type fs)
|
||
%pseudo-file-system-types))
|
||
;; Don't try to validate network file systems.
|
||
(not (string-prefix? "nfs" (file-system-type fs)))
|
||
(not (memq 'bind-mount (file-system-flags fs)))))
|
||
file-systems))
|
||
|
||
(define labeled
|
||
(filter (lambda (fs)
|
||
(file-system-label? (file-system-device fs)))
|
||
relevant))
|
||
|
||
(define literal
|
||
(filter (lambda (fs)
|
||
(string? (file-system-device fs)))
|
||
relevant))
|
||
|
||
(define uuid
|
||
(filter (lambda (fs)
|
||
(uuid? (file-system-device fs)))
|
||
relevant))
|
||
|
||
(define fail? #f)
|
||
|
||
(define (file-system-location* fs)
|
||
(and=> (file-system-location fs)
|
||
source-properties->location))
|
||
|
||
(let-syntax ((error (syntax-rules ()
|
||
((_ args ...)
|
||
(begin
|
||
(set! fail? #t)
|
||
(report-error args ...))))))
|
||
(for-each (lambda (fs)
|
||
(catch 'system-error
|
||
(lambda ()
|
||
(stat (file-system-device fs)))
|
||
(lambda args
|
||
(let ((errno (system-error-errno args))
|
||
(device (file-system-device fs)))
|
||
(error (file-system-location* fs)
|
||
(G_ "device '~a' not found: ~a~%")
|
||
device (strerror errno))
|
||
(unless (string-prefix? "/" device)
|
||
(display-hint (format #f (G_ "If '~a' is a file system
|
||
label, write @code{(file-system-label ~s)} in your @code{device} field.")
|
||
device device)))))))
|
||
literal)
|
||
(for-each (lambda (fs)
|
||
(let ((label (file-system-label->string
|
||
(file-system-device fs))))
|
||
(unless (find-partition-by-label label)
|
||
(error (file-system-location* fs)
|
||
(G_ "file system with label '~a' not found~%")
|
||
label))))
|
||
labeled)
|
||
(for-each (lambda (fs)
|
||
(unless (find-partition-by-uuid (file-system-device fs))
|
||
(error (file-system-location* fs)
|
||
(G_ "file system with UUID '~a' not found~%")
|
||
(uuid->string (file-system-device fs)))))
|
||
uuid)
|
||
|
||
(when fail?
|
||
;; Better be safe than sorry.
|
||
(exit 1))))
|
||
|
||
(define (check-mapped-devices os)
|
||
"Check that each of MAPPED-DEVICES is valid according to the 'check'
|
||
procedure of its type."
|
||
(define boot-mapped-devices
|
||
(operating-system-boot-mapped-devices os))
|
||
|
||
(define (needed-for-boot? md)
|
||
(memq md boot-mapped-devices))
|
||
|
||
(define initrd-modules
|
||
(operating-system-initrd-modules os))
|
||
|
||
(for-each (lambda (md)
|
||
(let ((check (mapped-device-kind-check
|
||
(mapped-device-type md))))
|
||
;; We expect CHECK to raise an exception with a detailed
|
||
;; '&message' if something goes wrong.
|
||
(check md
|
||
#:needed-for-boot? (needed-for-boot? md)
|
||
#:initrd-modules initrd-modules)))
|
||
(operating-system-mapped-devices os)))
|
||
|
||
(define (check-initrd-modules os)
|
||
"Check that modules needed by 'needed-for-boot' file systems in OS are
|
||
available in the initrd. Note that mapped devices are responsible for
|
||
checking this by themselves in their 'check' procedure."
|
||
(define (file-system-/dev fs)
|
||
(let ((device (file-system-device fs)))
|
||
(match device
|
||
((? string?)
|
||
device)
|
||
((? uuid?)
|
||
(find-partition-by-uuid device))
|
||
((? file-system-label?)
|
||
(find-partition-by-label (file-system-label->string device))))))
|
||
|
||
(define file-systems
|
||
(filter file-system-needed-for-boot?
|
||
(operating-system-file-systems os)))
|
||
|
||
(for-each (lambda (fs)
|
||
(check-device-initrd-modules (file-system-/dev fs)
|
||
(operating-system-initrd-modules os)
|
||
(source-properties->location
|
||
(file-system-location fs))))
|
||
file-systems))
|
||
|
||
|
||
;;;
|
||
;;; Action.
|
||
;;;
|
||
|
||
(define* (system-derivation-for-action image action
|
||
#:key
|
||
full-boot?
|
||
container-shared-network?
|
||
mappings)
|
||
"Return as a monadic value the derivation for IMAGE according to ACTION."
|
||
(mlet %store-monad ((target (current-target-system))
|
||
(os -> (image-operating-system image))
|
||
(image-size -> (image-size image)))
|
||
(case action
|
||
((build init reconfigure)
|
||
(operating-system-derivation os))
|
||
((container)
|
||
(container-script
|
||
os
|
||
#:mappings mappings
|
||
#:shared-network? container-shared-network?))
|
||
((vm)
|
||
(system-qemu-image/shared-store-script os
|
||
#:full-boot? full-boot?
|
||
#:disk-image-size
|
||
(if full-boot?
|
||
image-size
|
||
(* 70 (expt 2 20)))
|
||
#:mappings mappings))
|
||
((image disk-image vm-image)
|
||
(when (eq? action 'disk-image)
|
||
(warning (G_ "'disk-image' is deprecated: use 'image' instead~%")))
|
||
(when (eq? action 'vm-image)
|
||
(warning (G_ "'vm-image' is deprecated: use 'image' instead~%")))
|
||
(lower-object (system-image image)))
|
||
((docker-image)
|
||
(system-docker-image os
|
||
#:memory-size 1024
|
||
#:shared-network? container-shared-network?)))))
|
||
|
||
(define (maybe-suggest-running-guix-pull)
|
||
"Suggest running 'guix pull' if this has never been done before."
|
||
;; Check whether we're running a 'guix pull'-provided 'guix' command. When
|
||
;; 'current-profile' returns #f, we may be running the globally-installed
|
||
;; 'guix' and thus run the risk of deploying an older 'guix'. See
|
||
;; <https://lists.gnu.org/archive/html/guix-devel/2014-08/msg00057.html>
|
||
(unless (or (current-profile) (getenv "GUIX_UNINSTALLED"))
|
||
(warning (G_ "Consider running 'guix pull' before 'reconfigure'.~%"))
|
||
(warning (G_ "Failing to do that may downgrade your system!~%"))))
|
||
|
||
(define (bootloader-installer-script installer
|
||
bootloader device target)
|
||
"Return a file calling INSTALLER gexp with given BOOTLOADER, DEVICE
|
||
and TARGET arguments."
|
||
(scheme-file "bootloader-installer"
|
||
(with-imported-modules '((gnu build bootloader)
|
||
(guix build utils))
|
||
#~(begin
|
||
(use-modules (gnu build bootloader)
|
||
(guix build utils)
|
||
(ice-9 binary-ports)
|
||
(srfi srfi-34)
|
||
(srfi srfi-35))
|
||
|
||
(guard (c ((message-condition? c) ;XXX: i18n
|
||
(format (current-error-port) "error: ~a~%"
|
||
(condition-message c))
|
||
(exit 1)))
|
||
(#$installer #$bootloader #$device #$target)
|
||
(info (G_ "bootloader successfully installed on '~a'~%")
|
||
#$device))))))
|
||
|
||
(define (local-eval exp)
|
||
"Evaluate EXP, a G-Expression, in-place."
|
||
(mlet* %store-monad ((lowered (lower-gexp exp))
|
||
(_ (built-derivations (lowered-gexp-inputs lowered))))
|
||
(save-load-path-excursion
|
||
(set! %load-path (lowered-gexp-load-path lowered))
|
||
(set! %load-compiled-path (lowered-gexp-load-compiled-path lowered))
|
||
(return (primitive-eval (lowered-gexp-sexp lowered))))))
|
||
|
||
(define* (perform-action action image
|
||
#:key
|
||
(validate-reconfigure ensure-forward-reconfigure)
|
||
save-provenance?
|
||
skip-safety-checks?
|
||
install-bootloader?
|
||
dry-run? derivations-only?
|
||
use-substitutes? bootloader-target target
|
||
full-boot?
|
||
container-shared-network?
|
||
(mappings '())
|
||
(gc-root #f))
|
||
"Perform ACTION for IMAGE. INSTALL-BOOTLOADER? specifies whether to install
|
||
bootloader; BOOTLOADER-TAGET is the target for the bootloader; TARGET is the
|
||
target root directory.
|
||
|
||
FULL-BOOT? is used for the 'vm' action; it determines whether to
|
||
boot directly to the kernel or to the bootloader. CONTAINER-SHARED-NETWORK?
|
||
determines if the container will use a separate network namespace.
|
||
|
||
When DERIVATIONS-ONLY? is true, print the derivation file name(s) without
|
||
building anything.
|
||
|
||
When GC-ROOT is a path, also make that path an indirect root of the build
|
||
output when building a system derivation, such as a disk image.
|
||
|
||
When SKIP-SAFETY-CHECKS? is true, skip the file system and initrd module
|
||
static checks."
|
||
(define println
|
||
(cut format #t "~a~%" <>))
|
||
|
||
(define menu-entries
|
||
(if (eq? 'init action)
|
||
'()
|
||
(map boot-parameters->menu-entry (profile-boot-parameters))))
|
||
|
||
(define os
|
||
(image-operating-system image))
|
||
|
||
(define bootloader
|
||
(operating-system-bootloader os))
|
||
|
||
(define bootcfg
|
||
(and (memq action '(init reconfigure))
|
||
(operating-system-bootcfg os menu-entries)))
|
||
|
||
(when (eq? action 'reconfigure)
|
||
(maybe-suggest-running-guix-pull)
|
||
(check-forward-update validate-reconfigure))
|
||
|
||
;; Check whether the declared file systems exist. This is better than
|
||
;; instantiating a broken configuration. Assume that we can only check if
|
||
;; running as root.
|
||
(when (and (not skip-safety-checks?)
|
||
(memq action '(init reconfigure)))
|
||
(check-mapped-devices os)
|
||
(when (zero? (getuid))
|
||
(check-file-system-availability (operating-system-file-systems os))
|
||
(check-initrd-modules os)))
|
||
|
||
(mlet* %store-monad
|
||
((sys (system-derivation-for-action image action
|
||
#:full-boot? full-boot?
|
||
#:container-shared-network? container-shared-network?
|
||
#:mappings mappings))
|
||
|
||
;; For 'init' and 'reconfigure', always build BOOTCFG, even if
|
||
;; --no-bootloader is passed, because we then use it as a GC root.
|
||
;; See <http://bugs.gnu.org/21068>.
|
||
(drvs (mapm/accumulate-builds lower-object
|
||
(if (memq action '(init reconfigure))
|
||
(list sys bootcfg)
|
||
(list sys))))
|
||
(% (if derivations-only?
|
||
(return (for-each (compose println derivation-file-name)
|
||
drvs))
|
||
(built-derivations drvs))))
|
||
|
||
(if (or dry-run? derivations-only?)
|
||
(return #f)
|
||
(begin
|
||
(for-each (compose println derivation->output-path)
|
||
drvs)
|
||
|
||
(case action
|
||
((reconfigure)
|
||
(newline)
|
||
(format #t (G_ "activating system...~%"))
|
||
(mbegin %store-monad
|
||
(switch-to-system local-eval os)
|
||
(mwhen install-bootloader?
|
||
(install-bootloader local-eval bootloader bootcfg
|
||
#:target (or target "/"))
|
||
(return
|
||
(info (G_ "bootloader successfully installed on '~a'~%")
|
||
(bootloader-configuration-target bootloader))))
|
||
(with-shepherd-error-handling
|
||
(upgrade-shepherd-services local-eval os)
|
||
(return (format #t (G_ "\
|
||
To complete the upgrade, run 'herd restart SERVICE' to stop,
|
||
upgrade, and restart each service that was not automatically restarted.\n")))
|
||
(return (format #t (G_ "\
|
||
Run 'herd status' to view the list of services on your system.\n"))))))
|
||
((init)
|
||
(newline)
|
||
(format #t (G_ "initializing operating system under '~a'...~%")
|
||
target)
|
||
(install sys (canonicalize-path target)
|
||
#:install-bootloader? install-bootloader?
|
||
#:bootloader bootloader
|
||
#:bootcfg bootcfg))
|
||
(else
|
||
;; All we had to do was to build SYS and maybe register an
|
||
;; indirect GC root.
|
||
(let ((output (derivation->output-path sys)))
|
||
(mbegin %store-monad
|
||
(mwhen gc-root
|
||
(register-root* (list output) gc-root))
|
||
(return output)))))))))
|
||
|
||
(define (lookup-backend name) ;TODO: factorize
|
||
"Return the graph backend called NAME. Raise an error if it is not found."
|
||
(or (find (lambda (backend)
|
||
(string=? (graph-backend-name backend) name))
|
||
%graph-backends)
|
||
(leave (G_ "~a: unknown backend~%") name)))
|
||
|
||
(define* (export-extension-graph os port
|
||
#:key (backend (lookup-backend "graphviz")))
|
||
"Export the service extension graph of OS to PORT using BACKEND."
|
||
(let* ((services (operating-system-services os))
|
||
(system (find (lambda (service)
|
||
(eq? (service-kind service) system-service-type))
|
||
services)))
|
||
(export-graph (list system) (current-output-port)
|
||
#:backend backend
|
||
#:node-type (service-node-type services)
|
||
#:reverse-edges? #t)))
|
||
|
||
(define* (export-shepherd-graph os port
|
||
#:key (backend (lookup-backend "graphviz")))
|
||
"Export the graph of shepherd services of OS to PORT using BACKEND."
|
||
(let* ((services (operating-system-services os))
|
||
(pid1 (fold-services services
|
||
#:target-type shepherd-root-service-type))
|
||
;; Get the list of <shepherd-service>.
|
||
(shepherds (shepherd-configuration-services (service-value pid1)))
|
||
(sinks (filter (lambda (service)
|
||
(null? (shepherd-service-requirement service)))
|
||
shepherds)))
|
||
(export-graph sinks (current-output-port)
|
||
#:backend backend
|
||
#:node-type (shepherd-service-node-type shepherds)
|
||
#:reverse-edges? #t)))
|
||
|
||
|
||
;;;
|
||
;;; Images.
|
||
;;;
|
||
|
||
(define (list-image-types)
|
||
"Print the available image types."
|
||
(display (G_ "The available image types are:\n"))
|
||
(newline)
|
||
(format #t "~{ - ~a ~%~}" (map image-type-name (force %image-types))))
|
||
|
||
|
||
;;;
|
||
;;; Options.
|
||
;;;
|
||
|
||
(define (show-help)
|
||
(display (G_ "Usage: guix system [OPTION ...] ACTION [ARG ...] [FILE]
|
||
Build the operating system declared in FILE according to ACTION.
|
||
Some ACTIONS support additional ARGS.\n"))
|
||
(newline)
|
||
(display (G_ "The valid values for ACTION are:\n"))
|
||
(newline)
|
||
(display (G_ "\
|
||
search search for existing service types\n"))
|
||
(display (G_ "\
|
||
reconfigure switch to a new operating system configuration\n"))
|
||
(display (G_ "\
|
||
roll-back switch to the previous operating system configuration\n"))
|
||
(display (G_ "\
|
||
describe describe the current system\n"))
|
||
(display (G_ "\
|
||
list-generations list the system generations\n"))
|
||
(display (G_ "\
|
||
switch-generation switch to an existing operating system configuration\n"))
|
||
(display (G_ "\
|
||
delete-generations delete old system generations\n"))
|
||
(display (G_ "\
|
||
build build the operating system without installing anything\n"))
|
||
(display (G_ "\
|
||
container build a container that shares the host's store\n"))
|
||
(display (G_ "\
|
||
vm build a virtual machine image that shares the host's store\n"))
|
||
(display (G_ "\
|
||
image build a Guix System image\n"))
|
||
(display (G_ "\
|
||
docker-image build a Docker image\n"))
|
||
(display (G_ "\
|
||
init initialize a root file system to run GNU\n"))
|
||
(display (G_ "\
|
||
extension-graph emit the service extension graph in Dot format\n"))
|
||
(display (G_ "\
|
||
shepherd-graph emit the graph of shepherd services in Dot format\n"))
|
||
|
||
(show-build-options-help)
|
||
(display (G_ "
|
||
-d, --derivation return the derivation of the given system"))
|
||
(display (G_ "
|
||
-e, --expression=EXPR consider the operating-system EXPR evaluates to
|
||
instead of reading FILE, when applicable"))
|
||
(display (G_ "
|
||
--allow-downgrades for 'reconfigure', allow downgrades to earlier
|
||
channel revisions"))
|
||
(display (G_ "
|
||
--on-error=STRATEGY
|
||
apply STRATEGY (one of nothing-special, backtrace,
|
||
or debug) when an error occurs while reading FILE"))
|
||
(display (G_ "
|
||
--list-image-types list available image types"))
|
||
(display (G_ "
|
||
-t, --image-type=TYPE for 'image', produce an image of TYPE"))
|
||
(display (G_ "
|
||
--image-size=SIZE for 'image', produce an image of SIZE"))
|
||
(display (G_ "
|
||
--no-bootloader for 'init', do not install a bootloader"))
|
||
(display (G_ "
|
||
--volatile for 'image', make the root file system volatile"))
|
||
(display (G_ "
|
||
--label=LABEL for 'image', label disk image with LABEL"))
|
||
(display (G_ "
|
||
--save-provenance save provenance information"))
|
||
(display (G_ "
|
||
--share=SPEC for 'vm' and 'container', share host file system with
|
||
read/write access according to SPEC"))
|
||
(display (G_ "
|
||
--expose=SPEC for 'vm' and 'container', expose host file system
|
||
directory as read-only according to SPEC"))
|
||
(display (G_ "
|
||
-N, --network for 'container', allow containers to access the network"))
|
||
(display (G_ "
|
||
-r, --root=FILE for 'vm', 'image', 'container' and 'build',
|
||
make FILE a symlink to the result, and
|
||
register it as a garbage collector root"))
|
||
(display (G_ "
|
||
--full-boot for 'vm', make a full boot sequence"))
|
||
(display (G_ "
|
||
--skip-checks skip file system and initrd module safety checks"))
|
||
(display (G_ "
|
||
--target=TRIPLET cross-build for TRIPLET--e.g., \"armel-linux-gnu\""))
|
||
(display (G_ "
|
||
-v, --verbosity=LEVEL use the given verbosity LEVEL"))
|
||
(newline)
|
||
(display (G_ "
|
||
--graph-backend=BACKEND
|
||
use BACKEND for 'extension-graphs' and 'shepherd-graph'"))
|
||
(newline)
|
||
(display (G_ "
|
||
-h, --help display this help and exit"))
|
||
(display (G_ "
|
||
-V, --version display version information and exit"))
|
||
(newline)
|
||
(show-bug-report-information))
|
||
|
||
(define %options
|
||
;; Specifications of the command-line options.
|
||
(cons* (option '(#\h "help") #f #f
|
||
(lambda args
|
||
(show-help)
|
||
(exit 0)))
|
||
(option '(#\V "version") #f #f
|
||
(lambda args
|
||
(show-version-and-exit "guix system")))
|
||
(option '(#\e "expression") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'expression arg result)))
|
||
(option '(#\d "derivation") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'derivations-only? #t result)))
|
||
(option '("allow-downgrades") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'validate-reconfigure
|
||
warn-about-backward-reconfigure
|
||
result)))
|
||
(option '("on-error") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'on-error (string->symbol arg)
|
||
result)))
|
||
(option '(#\t "image-type") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'image-type (string->symbol arg)
|
||
result)))
|
||
(option '("list-image-types") #f #f
|
||
(lambda (opt name arg result)
|
||
(list-image-types)
|
||
(exit 0)))
|
||
(option '("image-size") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'image-size (size->number arg)
|
||
result)))
|
||
(option '(#\N "network") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'container-shared-network? #t result)))
|
||
(option '("no-bootloader" "no-grub") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'install-bootloader? #f result)))
|
||
(option '("volatile") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'volatile-root? #t result)))
|
||
(option '("label") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'label arg result)))
|
||
(option '("full-boot") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'full-boot? #t result)))
|
||
(option '("save-provenance") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'save-provenance? #t result)))
|
||
(option '("skip-checks") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'skip-safety-checks? #t result)))
|
||
|
||
(option '("share") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'file-system-mapping
|
||
(specification->file-system-mapping arg #t)
|
||
result)))
|
||
(option '("expose") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'file-system-mapping
|
||
(specification->file-system-mapping arg #f)
|
||
result)))
|
||
|
||
(option '(#\n "dry-run") #f #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'dry-run? #t result)))
|
||
(option '(#\v "verbosity") #t #f
|
||
(lambda (opt name arg result)
|
||
(let ((level (string->number* arg)))
|
||
(alist-cons 'verbosity level
|
||
(alist-delete 'verbosity result)))))
|
||
(option '(#\s "system") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'system arg
|
||
(alist-delete 'system result eq?))))
|
||
(option '("target") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'target arg
|
||
(alist-delete 'target result eq?))))
|
||
(option '(#\r "root") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'gc-root arg result)))
|
||
(option '("graph-backend") #t #f
|
||
(lambda (opt name arg result)
|
||
(alist-cons 'graph-backend arg result)))
|
||
%standard-build-options))
|
||
|
||
(define %default-options
|
||
;; Alist of default option values.
|
||
`((system . ,(%current-system))
|
||
(target . #f)
|
||
(substitutes? . #t)
|
||
(offload? . #t)
|
||
(print-build-trace? . #t)
|
||
(print-extended-build-trace? . #t)
|
||
(multiplexed-build-output? . #t)
|
||
(graft? . #t)
|
||
(debug . 0)
|
||
(verbosity . #f) ;default
|
||
(validate-reconfigure . ,ensure-forward-reconfigure)
|
||
(image-type . efi-raw)
|
||
(image-size . guess)
|
||
(install-bootloader? . #t)
|
||
(label . #f)
|
||
(volatile-root? . #f)
|
||
(graph-backend . "graphviz")))
|
||
|
||
(define (verbosity-level opts)
|
||
"Return the verbosity level based on OPTS, the alist of parsed options."
|
||
(or (assoc-ref opts 'verbosity)
|
||
(if (eq? (assoc-ref opts 'action) 'build)
|
||
3 1)))
|
||
|
||
|
||
;;;
|
||
;;; Entry point.
|
||
;;;
|
||
|
||
(define (process-action action args opts)
|
||
"Process ACTION, a sub-command, with the arguments are listed in ARGS.
|
||
ACTION must be one of the sub-commands that takes an operating system
|
||
declaration as an argument (a file name.) OPTS is the raw alist of options
|
||
resulting from command-line parsing."
|
||
(define (ensure-operating-system-or-image file-or-exp obj)
|
||
(unless (or (operating-system? obj) (image? obj))
|
||
(leave (G_ "'~a' does not return an operating system or an image~%")
|
||
file-or-exp))
|
||
obj)
|
||
|
||
(define save-provenance?
|
||
(or (assoc-ref opts 'save-provenance?)
|
||
(memq action '(init reconfigure))))
|
||
|
||
(let* ((file (match args
|
||
(() #f)
|
||
((x . _) x)))
|
||
(expr (assoc-ref opts 'expression))
|
||
(system (assoc-ref opts 'system))
|
||
(target (assoc-ref opts 'target))
|
||
(transform (lambda (obj)
|
||
(if (and save-provenance? (operating-system? obj))
|
||
(operating-system-with-provenance obj file)
|
||
obj)))
|
||
(obj (transform
|
||
(ensure-operating-system-or-image
|
||
(or file expr)
|
||
(cond
|
||
((and expr file)
|
||
(leave
|
||
(G_ "both file and expression cannot be specified~%")))
|
||
(expr
|
||
(read/eval expr))
|
||
(file
|
||
(load* file %user-module
|
||
#:on-error (assoc-ref opts 'on-error)))
|
||
(else
|
||
(leave (G_ "no configuration specified~%")))))))
|
||
(dry? (assoc-ref opts 'dry-run?))
|
||
(bootloader? (assoc-ref opts 'install-bootloader?))
|
||
(label (assoc-ref opts 'label))
|
||
(image-type (lookup-image-type-by-name
|
||
(assoc-ref opts 'image-type)))
|
||
(image (let* ((image-type (if (eq? action 'vm-image)
|
||
qcow2-image-type
|
||
image-type))
|
||
(image-size (assoc-ref opts 'image-size))
|
||
(volatile? (assoc-ref opts 'volatile-root?))
|
||
(base-image (if (operating-system? obj)
|
||
(os->image obj
|
||
#:type image-type)
|
||
obj))
|
||
(base-target (image-target base-image)))
|
||
(image
|
||
(inherit (if label
|
||
(image-with-label base-image label)
|
||
base-image))
|
||
(target (or base-target target))
|
||
(size image-size)
|
||
(volatile-root? volatile?))))
|
||
(os (image-operating-system image))
|
||
(target-file (match args
|
||
((first second) second)
|
||
(_ #f)))
|
||
(bootloader-target
|
||
(and bootloader?
|
||
(bootloader-configuration-target
|
||
(operating-system-bootloader os)))))
|
||
|
||
(define (graph-backend)
|
||
(lookup-backend (assoc-ref opts 'graph-backend)))
|
||
|
||
(with-store store
|
||
(set-build-options-from-command-line store opts)
|
||
|
||
(with-build-handler (build-notifier #:use-substitutes?
|
||
(assoc-ref opts 'substitutes?)
|
||
#:verbosity
|
||
(verbosity-level opts)
|
||
#:dry-run?
|
||
(assoc-ref opts 'dry-run?))
|
||
(run-with-store store
|
||
(mbegin %store-monad
|
||
(set-guile-for-build (default-guile))
|
||
(case action
|
||
((extension-graph)
|
||
(export-extension-graph os (current-output-port)
|
||
#:backend (graph-backend)))
|
||
((shepherd-graph)
|
||
(export-shepherd-graph os (current-output-port)
|
||
#:backend (graph-backend)))
|
||
(else
|
||
(unless (memq action '(build init))
|
||
(warn-about-old-distro #:suggested-command
|
||
"guix system reconfigure"))
|
||
|
||
(perform-action action image
|
||
#:dry-run? dry?
|
||
#:derivations-only? (assoc-ref opts
|
||
'derivations-only?)
|
||
#:use-substitutes? (assoc-ref opts 'substitutes?)
|
||
#:skip-safety-checks?
|
||
(assoc-ref opts 'skip-safety-checks?)
|
||
#:validate-reconfigure
|
||
(assoc-ref opts 'validate-reconfigure)
|
||
#:full-boot? (assoc-ref opts 'full-boot?)
|
||
#:container-shared-network?
|
||
(assoc-ref opts 'container-shared-network?)
|
||
#:mappings (filter-map (match-lambda
|
||
(('file-system-mapping . m)
|
||
m)
|
||
(_ #f))
|
||
opts)
|
||
#:install-bootloader? bootloader?
|
||
#:target target-file
|
||
#:bootloader-target bootloader-target
|
||
#:gc-root (assoc-ref opts 'gc-root)))))
|
||
#:target target
|
||
#:system system)))
|
||
(warn-about-disk-space)))
|
||
|
||
(define (resolve-subcommand name)
|
||
(let ((module (resolve-interface
|
||
`(guix scripts system ,(string->symbol name))))
|
||
(proc (string->symbol (string-append "guix-system-" name))))
|
||
(module-ref module proc)))
|
||
|
||
(define (process-command command args opts)
|
||
"Process COMMAND, one of the 'guix system' sub-commands. ARGS is its
|
||
argument list and OPTS is the option alist."
|
||
(define-syntax-rule (with-store* store exp ...)
|
||
(with-store store
|
||
(set-build-options-from-command-line store opts)
|
||
exp ...))
|
||
|
||
(case command
|
||
;; The following commands do not need to use the store, and they do not need
|
||
;; an operating system configuration file.
|
||
((list-generations)
|
||
(let ((pattern (match args
|
||
(() #f)
|
||
((pattern) pattern)
|
||
(x (leave (G_ "wrong number of arguments~%"))))))
|
||
(list-generations pattern)))
|
||
((describe)
|
||
(match (generation-number %system-profile)
|
||
(0
|
||
(error (G_ "no system generation, nothing to describe~%")))
|
||
(generation
|
||
(display-system-generation generation))))
|
||
((search)
|
||
(apply (resolve-subcommand "search") args))
|
||
;; The following commands need to use the store, but they do not need an
|
||
;; operating system configuration file.
|
||
((delete-generations)
|
||
(let ((pattern (match args
|
||
(() #f)
|
||
((pattern) pattern)
|
||
(x (leave (G_ "wrong number of arguments~%"))))))
|
||
(with-store* store
|
||
(delete-matching-generations store %system-profile pattern)
|
||
(reinstall-bootloader store (generation-number %system-profile)))))
|
||
((switch-generation)
|
||
(let ((pattern (match args
|
||
((pattern) pattern)
|
||
(x (leave (G_ "wrong number of arguments~%"))))))
|
||
(with-store* store
|
||
(switch-to-system-generation store pattern))))
|
||
((roll-back)
|
||
(let ((pattern (match args
|
||
(() "")
|
||
(x (leave (G_ "wrong number of arguments~%"))))))
|
||
(with-store* store
|
||
(roll-back-system store))))
|
||
;; The following commands need to use the store, and they also
|
||
;; need an operating system configuration file.
|
||
(else (process-action command args opts))))
|
||
|
||
(define-command (guix-system . args)
|
||
(synopsis "build and deploy full operating systems")
|
||
|
||
(define (parse-sub-command arg result)
|
||
;; Parse sub-command ARG and augment RESULT accordingly.
|
||
(if (assoc-ref result 'action)
|
||
(alist-cons 'argument arg result)
|
||
(let ((action (string->symbol arg)))
|
||
(case action
|
||
((build container vm vm-image image disk-image reconfigure init
|
||
extension-graph shepherd-graph
|
||
list-generations describe
|
||
delete-generations roll-back
|
||
switch-generation search docker-image)
|
||
(alist-cons 'action action result))
|
||
(else (leave (G_ "~a: unknown action~%") action))))))
|
||
|
||
(define (match-pair car)
|
||
;; Return a procedure that matches a pair with CAR.
|
||
(match-lambda
|
||
((head . tail)
|
||
(and (eq? car head) tail))
|
||
(_ #f)))
|
||
|
||
(define (option-arguments opts)
|
||
;; Extract the plain arguments from OPTS.
|
||
(let* ((args (reverse (filter-map (match-pair 'argument) opts)))
|
||
(count (length args))
|
||
(action (assoc-ref opts 'action))
|
||
(expr (assoc-ref opts 'expression)))
|
||
(define (fail)
|
||
(leave (G_ "wrong number of arguments for action '~a'~%")
|
||
action))
|
||
|
||
(unless action
|
||
(format (current-error-port)
|
||
(G_ "guix system: missing command name~%"))
|
||
(format (current-error-port)
|
||
(G_ "Try 'guix system --help' for more information.~%"))
|
||
(exit 1))
|
||
|
||
(case action
|
||
((build container vm vm-image image disk-image docker-image
|
||
reconfigure)
|
||
(unless (or (= count 1)
|
||
(and expr (= count 0)))
|
||
(fail)))
|
||
((init)
|
||
(unless (= count 2)
|
||
(fail))))
|
||
args))
|
||
|
||
(with-error-handling
|
||
(let* ((opts (parse-command-line args %options
|
||
(list %default-options)
|
||
#:argument-handler
|
||
parse-sub-command))
|
||
(args (option-arguments opts))
|
||
(command (assoc-ref opts 'action)))
|
||
(parameterize ((%graft? (assoc-ref opts 'graft?)))
|
||
(with-status-verbosity (verbosity-level opts)
|
||
(process-command command args opts))))))
|
||
|
||
;;; Local Variables:
|
||
;;; eval: (put 'with-store* 'scheme-indent-function 1)
|
||
;;; End:
|
||
|
||
;;; system.scm ends here
|