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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2016 David Craven <david@craven.ch>
;;;
;;; 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 import crate)
#:use-module (gnu packages rust)
#:use-module ((guix download) #:prefix download:)
#:use-module (guix import utils)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module (guix utils)
#:use-module (ice-9 match)
#:use-module (json)
#:use-module (srfi srfi-1)
#:export (crate->guix-package
guix-package->crate-name
%crate-updater))
(define (crate-fetch name)
"Return an alist representation of the crates.io metadata for the package NAME,
or #f on failure."
;; XXX: We want to silence the download progress report, which is especially
;; annoying for 'guix refresh', but we have to use a file port.
(call-with-output-file "/dev/null"
(lambda (null)
(with-error-to-port null
(lambda ()
(json-fetch (string-append "https://crates.io/api/v1/crates/"
name)))))))
;; TODO: Import inputs and native-inputs
(define (make-crate-sexp name version home-page synopsis description license)
"Return the `package' s-expression for a rust package with the given NAME,
VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch (crate-uri name version) temp)
`(package
(name ,(crate-name->package-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (crate-uri ,name version))
(file-name (string-append name "-" version ".tar.gz"))
(sha256
(base32
,(guix-hash-url temp)))))
(build-system cargo-build-system)
(home-page ,home-page)
(synopsis ,synopsis)
(description ,(beautify-description description))
(license ,(match license
(() #f)
((license) license)
(_ `(list ,@license)))))))))
(define (crate->guix-package crate-name)
"Fetch the metadata for CRATE-NAME from crates.io, and return the
`package' s-expression corresponding to that package, or #f on failure."
(let ((crate (crate-fetch crate-name)))
(let ((name (assoc-ref* crate "crate" "name"))
(version (assoc-ref* crate "crate" "max_version"))
(home-page (assoc-ref* crate "crate" "homepage"))
(synopsis (assoc-ref* crate "crate" "description"))
(description (assoc-ref* crate "crate" "description"))
(license (string->license (assoc-ref* crate "crate" "license"))))
(make-crate-sexp name version home-page synopsis description license))))
(define (guix-package->crate-name package)
"Return the crate NAME of a PACKAGE."
(string-join (cdr (string-split (package-name package) #\-)) "-"))
(define (string->license string)
(map spdx-string->license (string-split string #\/)))
(define (crate-name->package-name name)
(string-append "rust-" name))
(define (crate-package? package)
"Return true if PACKAGE is a Rust crate from crates.io."
(define (crate-url? url)
(string-prefix? "https://crates.io/" url))
(let ((source-url (and=> (package-source package) origin-uri))
(fetch-method (and=> (package-source package) origin-method)))
(and (eq? fetch-method download:url-fetch)
(match source-url
((? string?)
(crate-url? source-url))
((source-url ...)
(any crate-url? source-url))))))
(define (latest-release package)
"Return an <upstream-source> for the latest release of PACKAGE."
(let* ((crate-name (guix-package->crate-name package))
(metadata (crate-fetch crate-name))
(version (assoc-ref* metadata "crate" "max_version"))
(url (crate-uri crate-name version)))
(upstream-source
(package (package-name package))
(version version)
(urls (list url)))))
(define %crate-updater
(upstream-updater
(name 'crates)
(description "Updater for crates.io packages")
(pred crate-package?)
(latest latest-release)))
|