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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2017 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 pack)
#:use-module (guix scripts)
#:use-module (guix ui)
#:use-module (guix gexp)
#:use-module (guix utils)
#:use-module (guix store)
#:use-module (guix grafts)
#:use-module (guix monads)
#:use-module (guix packages)
#:use-module (guix profiles)
#:use-module (guix derivations)
#:use-module (guix scripts build)
#:use-module (gnu packages)
#:use-module (gnu packages compression)
#:autoload (gnu packages base) (tar)
#:autoload (gnu packages package-management) (guix)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-37)
#:use-module (ice-9 match)
#:export (compressor?
lookup-compressor
self-contained-tarball
guix-pack))
;; Type of a compression tool.
(define-record-type <compressor>
(compressor name package extension tar-option)
compressor?
(name compressor-name) ;string (e.g., "gzip")
(package compressor-package) ;package
(extension compressor-extension) ;string (e.g., "lz")
(tar-option compressor-tar-option)) ;string (e.g., "--lzip")
(define %compressors
;; Available compression tools.
;; FIXME: Use '--no-name' for gzip.
(list (compressor "gzip" gzip "gz" "--gzip")
(compressor "lzip" lzip "lz" "--lzip")
(compressor "xz" xz "xz" "--xz")
(compressor "bzip2" bzip2 "bz2" "--bzip2")))
(define (lookup-compressor name)
"Return the compressor object called NAME. Error out if it could not be
found."
(or (find (match-lambda
(($ <compressor> name*)
(string=? name* name)))
%compressors)
(leave (_ "~a: compressor not found~%") name)))
(define* (self-contained-tarball name profile
#:key deduplicate?
(compressor (first %compressors))
localstatedir?)
"Return a self-contained tarball containing a store initialized with the
closure of PROFILE, a derivation. The tarball contains /gnu/store; if
LOCALSTATEDIR? is true, it also contains /var/guix, including /var/guix/db
with a properly initialized store database."
(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")
;; We need Guix here for 'guix-register'.
(setenv "PATH"
(string-append #$(if localstatedir?
(file-append guix "/sbin:")
"")
#$tar "/bin:"
#$(compressor-package compressor) "/bin"))
;; Note: there is not much to gain here with deduplication and
;; there is the overhead of the '.links' directory, so turn it
;; off.
(populate-single-profile-directory %root
#:profile #$profile
#:closure "profile"
#:deduplicate? #f
#:register? #$localstatedir?)
;; Create the tarball. Use GNU format so there's no file name
;; length limitation.
(with-directory-excursion %root
(zero? (system* "tar" #$(compressor-tar-option compressor)
"--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" #$output
;; Avoid adding / and /var to the tarball, so
;; that the ownership and permissions of those
;; directories will not be overwritten when
;; extracting the archive. Do not include /root
;; because the root account might have a
;; different home directory.
#$@(if localstatedir?
'("./var/guix")
'())
(string-append "." (%store-directory))))))))
(gexp->derivation (string-append name ".tar."
(compressor-extension compressor))
build
#:references-graphs `(("profile" ,profile))))
;;;
;;; Command-line options.
;;;
(define %default-options
;; Alist of default option values.
`((system . ,(%current-system))
(substitutes? . #t)
(graft? . #t)
(max-silent-time . 3600)
(verbosity . 0)
(compressor . ,(first %compressors))))
(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 pack")))
(option '(#\n "dry-run") #f #f
(lambda (opt name arg result)
(alist-cons 'dry-run? #t (alist-cons 'graft? #f result))))
(option '(#\s "system") #t #f
(lambda (opt name arg result)
(alist-cons 'system arg
(alist-delete 'system result eq?))))
(option '(#\C "compression") #t #f
(lambda (opt name arg result)
(alist-cons 'compressor (lookup-compressor arg)
result)))
(option '("localstatedir") #f #f
(lambda (opt name arg result)
(alist-cons 'localstatedir? #t result)))
(append %transformation-options
%standard-build-options)))
(define (show-help)
(display (_ "Usage: guix pack [OPTION]... PACKAGE...
Create a bundle of PACKAGE.\n"))
(show-build-options-help)
(newline)
(show-transformation-options-help)
(newline)
(display (_ "
-s, --system=SYSTEM attempt to build for SYSTEM--e.g., \"i686-linux\""))
(display (_ "
-C, --compression=TOOL compress using TOOL--e.g., \"lzip\""))
(display (_ "
--localstatedir include /var/guix in the resulting pack"))
(newline)
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
;;;
;;; Entry point.
;;;
(define (guix-pack . args)
(define opts
(parse-command-line args %options (list %default-options)))
(with-error-handling
(parameterize ((%graft? (assoc-ref opts 'graft?)))
(let* ((dry-run? (assoc-ref opts 'dry-run?))
(specs (filter-map (match-lambda
(('argument . name)
name)
(x #f))
opts))
(packages (map (lambda (spec)
(call-with-values
(lambda ()
(specification->package+output spec))
list))
specs))
(compressor (assoc-ref opts 'compressor))
(localstatedir? (assoc-ref opts 'localstatedir?)))
(with-store store
(run-with-store store
(mlet* %store-monad ((profile (profile-derivation
(packages->manifest packages)))
(drv (self-contained-tarball "pack" profile
#:compressor
compressor
#:localstatedir?
localstatedir?)))
(mbegin %store-monad
(show-what-to-build* (list drv)
#:use-substitutes?
(assoc-ref opts 'substitutes?)
#:dry-run? dry-run?)
(munless dry-run?
(built-derivations (list drv))
(return (format #t "~a~%"
(derivation->output-path drv))))))
#:system (assoc-ref opts 'system)))))))
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