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hex.pm is a package repository for Erlang and Elixir. * guix/scripts/import.scm (importers): Add "hexpm". * guix/scripts/import/hexpm.scm, guix/import/hexpm.scm, guix/hexpm-download.scm: New files. * guix/import/utils.scm (source-spec->object): Add "hexpm-fetch" to list of fetch methods. * guix/upstream.scm (package-update/hexpm-fetch): New function. (%method-updates) Add it. * Makefile.am: Add them.
76 lines
2.9 KiB
Scheme
76 lines
2.9 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2017 Mathieu Lirzin <mthl@gnu.org>
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;;; Copyright © 2017 Christopher Baines <mail@cbaines.net>
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;;; Copyright © 2020 Jakub Kądziołka <kuba@kadziolka.net>
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;;; Copyright © 2020 Hartmut Goebel <h.goebel@crazy-compilers.com>
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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 hexpm-download)
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#:use-module (ice-9 match)
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#:use-module (guix extracting-download)
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#:use-module (guix packages) ;; for %current-system
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#:use-module (srfi srfi-26)
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#:export (hexpm-fetch
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%hexpm-repo-url
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hexpm-url
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hexpm-url?
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hexpm-uri))
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;;;
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;;; An <origin> method that fetches a package from the hex.pm repository,
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;;; unwrapping the actual content from the download tarball.
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;;;
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;; URL and paths from
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;; https://github.com/hexpm/specifications/blob/master/endpoints.md
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(define %hexpm-repo-url
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(make-parameter "https://repo.hex.pm"))
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(define hexpm-url
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(string-append (%hexpm-repo-url) "/tarballs/"))
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(define hexpm-url?
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(cut string-prefix? hexpm-url <>))
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(define (hexpm-uri name version)
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"Return a URI string for the package hosted at hex.pm corresponding to NAME
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and VERSION."
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(string-append hexpm-url name "-" version ".tar"))
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(define* (hexpm-fetch url hash-algo hash
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#:optional name
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#:key
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(filename-to-extract "contents.tar.gz")
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(system (%current-system))
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(guile (default-guile)))
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"Return a fixed-output derivation that fetches URL and extracts
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\"contents.tar.gz\". The output is expected to have hash HASH of type
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HASH-ALGO (a symbol). By default, the file name is the base name of URL;
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optionally, NAME can specify a different file name. By default, the file name
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is the base name of URL with \".gz\" appended; optionally, NAME can specify a
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different file name."
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(define file-name
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(match url
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((head _ ...)
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(basename head))
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(_
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(basename url))))
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(http-fetch/extract url "contents.tar.gz" hash-algo hash
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;; urls typically end with .tar, but contents is .tar.gz
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(or name (string-append file-name ".gz"))
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#:system system #:guile guile))
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