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authorLudovic Courtès <ludo@gnu.org>2014-02-18 23:45:58 +0100
committerLudovic Courtès <ludo@gnu.org>2014-02-18 23:47:49 +0100
commit523e48969bd87d26ebbe0a3f4de27257b6d6cb77 (patch)
treee3f3053a2b5594b94060ecf798d47e6059708bd2 /guix/scripts/system.scm
parentc0e57fb876b1bc996b3d30648f427dbf23bc99b4 (diff)
Add 'guix system'.
* guix/scripts/system.scm: New file. * Makefile.am (MODULES): Add it. * po/POTFILES.in: Likewise. * doc/guix.texi (Using the Configuration System): Link to "Invoking guix system". (Invoking guix system): New node.
Diffstat (limited to 'guix/scripts/system.scm')
-rw-r--r--guix/scripts/system.scm148
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diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; 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 (guix scripts system)
+ #:use-module (guix ui)
+ #:use-module (guix store)
+ #:use-module (guix derivations)
+ #:use-module (guix packages)
+ #:use-module (guix utils)
+ #:use-module (guix monads)
+ #:use-module (guix scripts build)
+ #:use-module (gnu system vm)
+ #:use-module (srfi srfi-1)
+ #:use-module (srfi srfi-37)
+ #:use-module (ice-9 match)
+ #:export (guix-system))
+
+(define %user-module
+ ;; Module in which the machine description file is loaded.
+ (let ((module (make-fresh-user-module)))
+ (for-each (lambda (iface)
+ (module-use! module (resolve-interface iface)))
+ '((gnu system)
+ (gnu system dmd)
+ (gnu system shadow)))
+ module))
+
+(define (read-operating-system file)
+ "Read the operating-system declaration from FILE and return it."
+ ;; TODO: Factorize.
+ (catch #t
+ (lambda ()
+ ;; Avoid ABI incompatibility with the <operating-system> record.
+ (set! %fresh-auto-compile #t)
+
+ (save-module-excursion
+ (lambda ()
+ (set-current-module %user-module)
+ (primitive-load file))))
+ (lambda args
+ (match args
+ (('system-error . _)
+ (let ((err (system-error-errno args)))
+ (leave (_ "failed to open operating system file '~a': ~a~%")
+ file (strerror err))))
+ (_
+ (leave (_ "failed to load machine file '~a': ~s~%")
+ file args))))))
+
+
+;;;
+;;; Options.
+;;;
+
+(define (show-help)
+ (display (_ "Usage: guix system [OPTION] ACTION FILE
+Build the operating system declared in FILE according to ACTION.\n"))
+ (display (_ "Currently the only valid value for ACTION is 'vm', which builds
+a virtual machine of the given operating system.\n"))
+ (show-build-options-help)
+ (newline)
+ (display (_ "
+ -h, --help display this help and exit"))
+ (display (_ "
+ -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 '(#\n "dry-run") #f #f
+ (lambda (opt name arg result)
+ (alist-cons 'dry-run? #t result)))
+ %standard-build-options))
+
+(define %default-options
+ ;; Alist of default option values.
+ `((system . ,(%current-system))
+ (substitutes? . #t)
+ (build-hook? . #t)
+ (max-silent-time . 3600)
+ (verbosity . 0)))
+
+
+;;;
+;;; Entry point.
+;;;
+
+(define (guix-system . args)
+ (define (parse-options)
+ ;; Return the alist of option values.
+ (args-fold* args %options
+ (lambda (opt name arg result)
+ (leave (_ "~A: unrecognized option~%") name))
+ (lambda (arg result)
+ (if (assoc-ref result 'action)
+ (let ((previous (assoc-ref result 'argument)))
+ (if previous
+ (leave (_ "~a: extraneous argument~%") previous)
+ (alist-cons 'argument arg result)))
+ (let ((action (string->symbol arg)))
+ (case action
+ ((vm) (alist-cons 'action action result))
+ (else (leave (_ "~a: unknown action~%")
+ action))))))
+ %default-options))
+
+ (with-error-handling
+ (let* ((opts (parse-options))
+ (file (assoc-ref opts 'argument))
+ (os (if file
+ (read-operating-system file)
+ (leave (_ "no configuration file specified~%"))))
+ (mdrv (system-qemu-image/shared-store-script os))
+ (store (open-connection))
+ (dry? (assoc-ref opts 'dry-run?))
+ (drv (run-with-store store mdrv)))
+ (set-build-options-from-command-line store opts)
+ (show-what-to-build store (list drv)
+ #:dry-run? dry?
+ #:use-substitutes? (assoc-ref opts 'substitutes?))
+
+ (unless dry?
+ (build-derivations store (list drv))
+ (display (derivation->output-path drv))
+ (newline)))))