128 lines
4.6 KiB
Scheme
128 lines
4.6 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014, 2015, 2016 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 import gnu)
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#:use-module (guix gnu-maintenance)
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#:use-module (guix import utils)
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#:use-module (guix utils)
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#:use-module (guix store)
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#:use-module (gcrypt hash)
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#:use-module (guix base32)
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#:use-module (guix upstream)
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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-34)
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#:use-module (srfi srfi-35)
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#:use-module (web uri)
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#:use-module (ice-9 match)
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#:use-module (ice-9 regex)
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#:export (gnu->guix-package))
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;;; Commentary:
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;;;
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;;; Generate a package declaration template for the latest version of a GNU
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;;; package, using meta-data available upstream for the package.
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;;;
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;;; Code:
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(define (qualified-url url)
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"Return a fully-qualified URL based on URL."
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(if (string-prefix? "/" url)
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(string-append "http://www.gnu.org" url)
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url))
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(define (preferred-archive-type release)
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"Return the preferred type of archive for downloading RELEASE."
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(find (cute member <> (upstream-source-archive-types release))
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'("xz" "lz" "bz2" "tbz2" "gz" "tgz" "Z")))
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(define* (gnu-package->sexp package release
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#:key (key-download 'interactive))
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"Return the 'package' sexp for the RELEASE (a <gnu-release>) of PACKAGE (a
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<gnu-package>), or #f upon failure. Use KEY-DOWNLOAD as the OpenPGP key
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download policy (see 'download-tarball' for details.)"
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(define name
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(gnu-package-name package))
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(define url-base
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;; XXX: We assume that RELEASE's directory starts with "/gnu".
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(string-append "mirror:/"
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(match (upstream-source-urls release)
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((url rest ...)
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(dirname (uri-path (string->uri url)))))
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"/" name "-"))
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(define archive-type
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(preferred-archive-type release))
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(define url
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(find (cut string-suffix? archive-type <>)
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(upstream-source-urls release)))
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(define sig-url
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(find (cute string-suffix? (string-append archive-type ".sig") <>)
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(upstream-source-signature-urls release)))
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(with-store store
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(match (download-tarball store url sig-url
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#:key-download key-download)
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((? string? tarball)
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`(package
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(name ,name)
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(version ,(upstream-source-version release))
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(source (origin
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(method url-fetch)
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(uri (string-append ,url-base version
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,(string-append ".tar." archive-type)))
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(sha256
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(base32
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,(bytevector->nix-base32-string
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(file-sha256 tarball))))))
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(build-system gnu-build-system)
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(synopsis ,(gnu-package-doc-summary package))
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(description ,(gnu-package-doc-description package))
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(home-page ,(match (gnu-package-doc-urls package)
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((head . tail) (qualified-url head))))
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(license find-by-yourself!)))
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(#f ;failure to download or authenticate the tarball
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#f))))
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(define* (gnu->guix-package name
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#:key (key-download 'interactive))
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"Return the package declaration for NAME as an s-expression. Use
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KEY-DOWNLOAD as the OpenPGP key download policy (see 'download-tarball' for
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details.)"
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(match (latest-release name)
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((? upstream-source? release)
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(let ((version (upstream-source-version release)))
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(match (find-package name)
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(#f
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(raise (condition
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(&message
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(message "couldn't find meta-data for GNU package")))))
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(info
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(gnu-package->sexp info release #:key-download key-download)))))
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(_
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(raise (condition
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(&message
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(message
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"failed to determine latest release of GNU package")))))))
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;;; gnu.scm ends here
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