;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015 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 pull) #:use-module (guix ui) #:use-module (guix store) #:use-module (guix config) #:use-module (guix packages) #:use-module (guix derivations) #:use-module (guix download) #:use-module (guix gexp) #:use-module (guix monads) #:use-module ((guix build utils) #:select (with-directory-excursion delete-file-recursively)) #:use-module (gnu packages base) #:use-module (gnu packages guile) #:use-module ((gnu packages bootstrap) #:select (%bootstrap-guile)) #:use-module (gnu packages compression) #:use-module (gnu packages gnupg) #:use-module (srfi srfi-1) #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module (srfi srfi-37) #:use-module (ice-9 ftw) #:use-module (ice-9 match) #:export (guix-pull)) (define %snapshot-url ;; "http://hydra.gnu.org/job/guix/master/tarball/latest/download" "http://git.savannah.gnu.org/cgit/guix.git/snapshot/guix-master.tar.gz" ) (define-syntax-rule (with-environment-variable variable value body ...) (let ((original (getenv variable))) (dynamic-wind (lambda () (setenv variable value)) (lambda () body ...) (lambda () (setenv variable original))))) (define-syntax-rule (with-PATH value body ...) (with-environment-variable "PATH" value body ...)) ;;; ;;; Command-line options. ;;; (define %default-options ;; Alist of default option values. `((tarball-url . ,%snapshot-url))) (define (show-help) (display (_ "Usage: guix pull [OPTION]... Download and deploy the latest version of Guix.\n")) (display (_ " --verbose produce verbose output")) (display (_ " --url=URL download the Guix tarball from URL")) (display (_ " --bootstrap use the bootstrap Guile to build the new Guix")) (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. (list (option '("verbose") #f #f (lambda (opt name arg result) (alist-cons 'verbose? #t result))) (option '("url") #t #f (lambda (opt name arg result) (alist-cons 'tarball-url arg (alist-delete 'tarball-url result)))) (option '("bootstrap") #f #f (lambda (opt name arg result) (alist-cons 'bootstrap? #t result))) (option '(#\h "help") #f #f (lambda args (show-help) (exit 0))) (option '(#\V "version") #f #f (lambda args (show-version-and-exit "guix pull"))))) (define what-to-build (store-lift show-what-to-build)) (define indirect-root-added (store-lift add-indirect-root)) (define (temporary-directory) "Make a temporary directory and return its name." (let ((name (tmpnam))) (mkdir name) (chmod name #o700) name)) (define (first-directory directory) "Return a the name of the first file found under DIRECTORY." (match (scandir directory (lambda (name) (and (not (member name '("." ".."))) (file-is-directory? name)))) ((directory) directory) (x (raise (condition (&message (message "tarball did not produce a single source directory"))))))) (define (interned-then-deleted directory name) "Add DIRECTORY to the store under NAME, and delete it. Return the resulting store file name." (mlet %store-monad ((result (interned-file directory name #:recursive? #t))) (delete-file-recursively directory) (return result))) (define (unpack tarball) "Return the name of the directory where TARBALL has been unpacked." (mlet* %store-monad ((format -> (lift format %store-monad)) (tar (package->derivation tar)) (gzip (package->derivation gzip))) (mbegin %store-monad (what-to-build (list tar gzip)) (built-derivations (list tar gzip)) (format #t (_ "unpacking '~a'...~%") tarball) (let ((source (temporary-directory))) (with-directory-excursion source (with-PATH (string-append (derivation->output-path gzip) "/bin") (unless (zero? (system* (string-append (derivation->output-path tar) "/bin/tar") "xf" tarball)) (raise (condition (&message (message "failed to unpack source code")))))) (interned-then-deleted (string-append source "/" (first-directory source)) "guix-source")))))) (define %self-build-file ;; The file containing code to build Guix. This serves the same purpose as ;; a makefile, and, similarly, is intended to always keep this name. "build-aux/build-self.scm") (define* (build-from-source tarball #:key verbose?) "Return a derivation to build Guix from TARBALL, using the self-build script contained therein." ;; Running the self-build script makes it easier to update the build ;; procedure: the self-build script of the Guix-to-be-installed contains the ;; right dependencies, build procedure, etc., which the Guix-in-use may not ;; be know. (mlet* %store-monad ((source (unpack tarball)) (script -> (string-append source "/" %self-build-file)) (build -> (primitive-load script))) ;; BUILD must be a monadic procedure of at least one argument: the source ;; tree. (build source #:verbose? verbose?))) (define* (build-and-install tarball config-dir #:key verbose?) "Build the tool from TARBALL, and install it in CONFIG-DIR." (mlet* %store-monad ((source (build-from-source tarball #:verbose? verbose?)) (source-dir -> (derivation->output-path source)) (to-do? (what-to-build (list source))) (built? (built-derivations (list source)))) ;; Always update the 'latest' symlink, regardless of whether SOURCE was ;; already built or not. (if built? (mlet* %store-monad ((latest -> (string-append config-dir "/latest")) (done (indirect-root-added latest))) (if (and (file-exists? latest) (string=? (readlink latest) source-dir)) (begin (display (_ "Guix already up to date\n")) (return #t)) (begin (switch-symlinks latest source-dir) (format #t (_ "updated ~a successfully deployed under `~a'~%") %guix-package-name latest) (return #t)))) (leave (_ "failed to update Guix, check the build log~%"))))) (define (guix-pull . 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) (leave (_ "~A: unexpected argument~%") arg)) %default-options)) (with-error-handling (let* ((opts (parse-options)) (store (open-connection)) (url (assoc-ref opts 'tarball-url))) (let ((tarball (download-to-store store url "guix-latest.tar.gz"))) (unless tarball (leave (_ "failed to download up-to-date source, exiting\n"))) (parameterize ((%guile-for-build (package-derivation store (if (assoc-ref opts 'bootstrap?) %bootstrap-guile (canonical-package guile-2.0))))) (run-with-store store (build-and-install tarball (config-directory) #:verbose? (assoc-ref opts 'verbose?)))))))) ;; Local Variables: ;; eval: (put 'with-PATH 'scheme-indent-function 1) ;; eval: (put 'with-temporary-directory 'scheme-indent-function 1) ;; End: ;;; pull.scm ends here