diff options
Diffstat (limited to 'guix/scripts/pull.scm')
| -rw-r--r-- | guix/scripts/pull.scm | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/guix/scripts/pull.scm b/guix/scripts/pull.scm new file mode 100644 index 0000000000..f12133fff7 --- /dev/null +++ b/guix/scripts/pull.scm @@ -0,0 +1,222 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2013 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 build download) + #:use-module (gnu packages base) + #: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-11) + #:use-module (srfi srfi-37) + #: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 (download-and-store store) + "Download the latest Guix tarball, add it to STORE, and return its store +path." + ;; FIXME: Authenticate the downloaded file! + ;; FIXME: Optimize data transfers using rsync, Git, bsdiff, or GNUnet's DHT. + (call-with-temporary-output-file + (lambda (temp port) + (let ((result + (parameterize ((current-output-port (current-error-port))) + (url-fetch %snapshot-url temp)))) + (close port) + (and result + (add-to-store store "guix-latest.tar.gz" #f "sha256" temp)))))) + +(define (unpack store tarball) + "Return a derivation that unpacks TARBALL into STORE and compiles Scheme +files." + (define builder + `(begin + (use-modules (guix build utils) + (system base compile) + (ice-9 ftw) + (ice-9 match)) + + (let ((out (assoc-ref %outputs "out")) + (tar (assoc-ref %build-inputs "tar")) + (gzip (assoc-ref %build-inputs "gzip")) + (gcrypt (assoc-ref %build-inputs "gcrypt")) + (tarball (assoc-ref %build-inputs "tarball"))) + (setenv "PATH" (string-append tar "/bin:" gzip "/bin")) + + (system* "tar" "xvf" tarball) + (match (scandir "." (lambda (name) + (and (not (member name '("." ".."))) + (file-is-directory? name)))) + ((dir) + (chdir dir)) + (x + (error "tarball did not produce a single source directory" x))) + + (format #t "copying and compiling Guix to `~a'...~%" out) + + ;; Copy everything under guix/ and gnu/ plus guix.scm. + (file-system-fold (lambda (dir stat result) ; enter? + (or (string-prefix? "./guix" dir) + (string-prefix? "./gnu" dir) + (string=? "." dir))) + (lambda (file stat result) ; leaf + (when (or (not (string=? (dirname file) ".")) + (string=? (basename file) "guix.scm")) + (let ((target (string-drop file 1))) + (copy-file file + (string-append out target))))) + (lambda (dir stat result) ; down + (mkdir (string-append out + (string-drop dir 1)))) + (const #t) ; up + (const #t) ; skip + (lambda (file stat errno result) + (error "cannot access file" + file (strerror errno))) + #f + "." + lstat) + + ;; Add a fake (guix config) module to allow the other modules to be + ;; compiled. The user's (guix config) is the one that will be used. + (copy-file "guix/config.scm.in" + (string-append out "/guix/config.scm")) + (substitute* (string-append out "/guix/config.scm") + (("@LIBGCRYPT@") + (string-append gcrypt "/lib/libgcrypt"))) + + ;; Augment the search path so Scheme code can be compiled. + (set! %load-path (cons out %load-path)) + (set! %load-compiled-path (cons out %load-compiled-path)) + + ;; Compile the .scm files. + (for-each (lambda (file) + (when (string-suffix? ".scm" file) + (let ((go (string-append (string-drop-right file 4) + ".go"))) + (compile-file file + #:output-file go + #:opts %auto-compilation-options)))) + (find-files out "\\.scm")) + + ;; Remove the "fake" (guix config). + (delete-file (string-append out "/guix/config.scm")) + (delete-file (string-append out "/guix/config.go"))))) + + (build-expression->derivation store "guix-latest" (%current-system) + builder + `(("tar" ,(package-derivation store tar)) + ("gzip" ,(package-derivation store gzip)) + ("gcrypt" ,(package-derivation store + libgcrypt)) + ("tarball" ,tarball)) + #:modules '((guix build utils)))) + + +;;; +;;; Command-line options. +;;; + +(define %default-options + ;; Alist of default option values. + '()) + +(define (show-help) + (display (_ "Usage: guix pull [OPTION]... +Download and deploy the latest version of Guix.\n")) + (display (_ " + --verbose produce verbose output")) + (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 '("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 (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)) + + (let ((opts (parse-options)) + (store (open-connection))) + (with-error-handling + (let ((tarball (download-and-store store))) + (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 + guile-final))) + (current-build-output-port + (if (assoc-ref opts 'verbose?) + (current-error-port) + (%make-void-port "w")))) + (let*-values (((config-dir) + (config-directory)) + ((source drv) + (unpack store tarball)) + ((source-dir) + (derivation-output-path + (assoc-ref (derivation-outputs drv) "out")))) + (show-what-to-build store (list source)) + (if (build-derivations store (list source)) + (let ((latest (string-append config-dir "/latest"))) + (add-indirect-root store latest) + (switch-symlinks latest source-dir) + (format #t + (_ "updated ~a successfully deployed under `~a'~%") + %guix-package-name latest) + #t)))))))) |