1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@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 import gem)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (json)
#:use-module (web uri)
#:use-module (guix utils)
#:use-module (guix import utils)
#:use-module (guix import json)
#:use-module (guix packages)
#:use-module (guix licenses)
#:export (gem->guix-package))
(define (rubygems-fetch name)
"Return an alist representation of the RubyGems metadata for the package NAME,
or #f on failure."
(json-fetch
(string-append "https://rubygems.org/api/v1/gems/" name ".json")))
(define (ruby-package-name name)
"Given the NAME of a package on RubyGems, return a Guix-compliant name for
the package."
(if (string-prefix? "ruby-" name)
(snake-case name)
(string-append "ruby-" (snake-case name))))
(define (make-gem-sexp name version source-url home-page description
dependencies licenses)
"Return the `package' s-expression for a Ruby package with the given NAME,
VERSION, SOURCE-URL, HOME-PAGE, DESCRIPTION, DEPENDENCIES, and LICENSES."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch source-url temp)
`(package
(name ,(ruby-package-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (rubygems-uri ,name version))
(sha256
(base32
,(guix-hash-url temp)))))
(build-system ruby-build-system)
,@(if (null? dependencies)
'()
`(propagated-inputs
(,'quasiquote
,(map (lambda (name)
`(,name
(,'unquote
,(string->symbol name))))
dependencies))))
(synopsis ,description) ; nothing better to use
(description ,description)
(home-page ,home-page)
(license ,(match licenses
((license) (license->symbol license))
(_ (map license->symbol licenses)))))))))
(define (gem->guix-package package-name)
"Fetch the metadata for PACKAGE-NAME from rubygems.org, and return the
`package' s-expression corresponding to that package, or #f on failure."
(let ((package (rubygems-fetch package-name)))
(and package
(let ((name (assoc-ref package "name"))
(version (assoc-ref package "version"))
(source-url (assoc-ref package "gem_uri"))
(description (assoc-ref package "info"))
(home-page (assoc-ref package "homepage_uri"))
(dependencies (map (lambda (dep)
(let ((name (assoc-ref dep "name")))
(if (string=? name "bundler")
"bundler" ; special case, no prefix
(ruby-package-name name))))
(assoc-ref* package "dependencies"
"runtime")))
(licenses (map string->license
(assoc-ref package "licenses"))))
(make-gem-sexp name version source-url home-page
description dependencies licenses)))))
|