233 lines
9.0 KiB
Scheme
233 lines
9.0 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2013 Ludovic Courtès <ludo@gnu.org>
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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 archive)
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#:use-module (guix config)
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#:use-module (guix utils)
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#:use-module (guix store)
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#:use-module (guix packages)
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#:use-module (guix derivations)
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#:use-module (guix ui)
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#:use-module (ice-9 match)
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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-26)
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#:use-module (srfi srfi-37)
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#:use-module (guix scripts build)
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#:use-module (guix scripts package)
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#:export (guix-archive))
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;;;
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;;; Command-line options.
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;;;
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(define %default-options
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;; Alist of default option values.
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`((system . ,(%current-system))
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(substitutes? . #t)
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(max-silent-time . 3600)
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(verbosity . 0)))
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(define (show-help)
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(display (_ "Usage: guix archive [OPTION]... PACKAGE...
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Export/import one or more packages from/to the store.\n"))
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(display (_ "
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--export export the specified files/packages to stdout"))
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(display (_ "
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--import import from the archive passed on stdin"))
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(newline)
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(display (_ "
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-e, --expression=EXPR build the package or derivation EXPR evaluates to"))
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(display (_ "
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-S, --source build the packages' source derivations"))
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(display (_ "
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-s, --system=SYSTEM attempt to build for SYSTEM--e.g., \"i686-linux\""))
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(display (_ "
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--target=TRIPLET cross-build for TRIPLET--e.g., \"armel-linux-gnu\""))
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(display (_ "
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-n, --dry-run do not build the derivations"))
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(display (_ "
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--fallback fall back to building when the substituter fails"))
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(display (_ "
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--no-substitutes build instead of resorting to pre-built substitutes"))
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(display (_ "
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--max-silent-time=SECONDS
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mark the build as failed after SECONDS of silence"))
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(display (_ "
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-c, --cores=N allow the use of up to N CPU cores for the build"))
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(newline)
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(display (_ "
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-h, --help display this help and exit"))
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(display (_ "
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-V, --version display version information and exit"))
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(newline)
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(show-bug-report-information))
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(define %options
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;; Specifications of the command-line options.
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(list (option '(#\h "help") #f #f
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(lambda args
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(show-help)
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(exit 0)))
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(option '(#\V "version") #f #f
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(lambda args
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(show-version-and-exit "guix build")))
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(option '("export") #f #f
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(lambda (opt name arg result)
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(alist-cons 'export #t result)))
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(option '("import") #f #f
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(lambda (opt name arg result)
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(alist-cons 'import #t result)))
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(option '(#\S "source") #f #f
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(lambda (opt name arg result)
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(alist-cons 'source? #t result)))
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(option '(#\s "system") #t #f
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(lambda (opt name arg result)
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(alist-cons 'system arg
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(alist-delete 'system result eq?))))
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(option '("target") #t #f
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(lambda (opt name arg result)
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(alist-cons 'target arg
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(alist-delete 'target result eq?))))
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(option '(#\e "expression") #t #f
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(lambda (opt name arg result)
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(alist-cons 'expression arg result)))
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(option '(#\c "cores") #t #f
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(lambda (opt name arg result)
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(let ((c (false-if-exception (string->number arg))))
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(if c
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(alist-cons 'cores c result)
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(leave (_ "~a: not a number~%") arg)))))
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(option '(#\n "dry-run") #f #f
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(lambda (opt name arg result)
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(alist-cons 'dry-run? #t result)))
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(option '("fallback") #f #f
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(lambda (opt name arg result)
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(alist-cons 'fallback? #t
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(alist-delete 'fallback? result))))
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(option '("no-substitutes") #f #f
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(lambda (opt name arg result)
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(alist-cons 'substitutes? #f
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(alist-delete 'substitutes? result))))
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(option '("max-silent-time") #t #f
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(lambda (opt name arg result)
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(alist-cons 'max-silent-time (string->number* arg)
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result)))
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(option '(#\r "root") #t #f
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(lambda (opt name arg result)
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(alist-cons 'gc-root arg result)))
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(option '("verbosity") #t #f
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(lambda (opt name arg result)
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(let ((level (string->number arg)))
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(alist-cons 'verbosity level
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(alist-delete 'verbosity result)))))))
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(define (options->derivations+files store opts)
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"Given OPTS, the result of 'args-fold', return a list of derivations to
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build and a list of store files to transfer."
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(define package->derivation
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(match (assoc-ref opts 'target)
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(#f package-derivation)
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(triplet
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(cut package-cross-derivation <> <> triplet <>))))
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(define src? (assoc-ref opts 'source?))
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(define sys (assoc-ref opts 'system))
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(fold2 (lambda (arg derivations files)
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(match arg
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(('expression . str)
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(let ((drv (derivation-from-expression store str
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package->derivation
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sys src?)))
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(values (cons drv derivations)
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(cons (derivation->output-path drv) files))))
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(('argument . (? store-path? file))
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(values derivations (cons file files)))
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(('argument . (? string? spec))
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(let-values (((p output)
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(specification->package+output spec)))
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(if src?
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(let* ((s (package-source p))
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(drv (package-source-derivation store s)))
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(values (cons drv derivations)
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(cons (derivation->output-path drv)
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files)))
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(let ((drv (package->derivation store p sys)))
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(values (cons drv derivations)
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(cons (derivation->output-path drv output)
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files))))))
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(_
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(values derivations files))))
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'()
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'()
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opts))
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;;;
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;;; Entry point.
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;;;
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(define (export-from-store store opts)
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"Export the packages or derivations specified in OPTS from STORE. Write the
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resulting archive to the standard output port."
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(let-values (((drv files)
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(options->derivations+files store opts)))
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(show-what-to-build store drv
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:dry-run? (assoc-ref opts 'dry-run?))
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(set-build-options store
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#:build-cores (or (assoc-ref opts 'cores) 0)
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#:fallback? (assoc-ref opts 'fallback?)
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#:use-substitutes? (assoc-ref opts 'substitutes?)
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#:max-silent-time (assoc-ref opts 'max-silent-time))
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(if (or (assoc-ref opts 'dry-run?)
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(build-derivations store drv))
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(export-paths store files (current-output-port))
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(leave (_ "unable to export the given packages")))))
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(define (guix-archive . args)
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(define (parse-options)
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;; Return the alist of option values.
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(args-fold* args %options
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(lambda (opt name arg result)
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(leave (_ "~A: unrecognized option~%") name))
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(lambda (arg result)
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(alist-cons 'argument arg result))
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%default-options))
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(with-error-handling
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;; Ask for absolute file names so that .drv file names passed from the
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;; user to 'read-derivation' are absolute when it returns.
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(with-fluids ((%file-port-name-canonicalization 'absolute))
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(let* ((opts (parse-options))
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(store (open-connection)))
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(cond ((assoc-ref opts 'export)
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(export-from-store store opts))
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((assoc-ref opts 'import)
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(import-paths store (current-input-port)))
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(else
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(leave
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(_ "either '--export' or '--import' must be specified"))))))))
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