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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 David Thompson <davet@gnu.org>
;;; Copyright © 2016 Ben Woodcroft <donttrustben@gmail.com>
;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
;;; Copyright © 2020 Ludovic Courtès <ludo@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 (srfi srfi-1)
#:use-module (guix json)
#:use-module ((guix download) #:prefix download:)
#:use-module (guix import utils)
#:use-module (guix import json)
#:use-module (guix packages)
#:use-module (guix upstream)
#:use-module ((guix licenses) #:prefix license:)
#:use-module (guix base16)
#:use-module (guix base32)
#:use-module ((guix build-system ruby) #:select (rubygems-uri))
#:export (gem->guix-package
%gem-updater
gem-recursive-import))
;; Gems as defined by the API at <https://rubygems.org/api/v1/gems>.
(define-json-mapping <gem> make-gem gem?
json->gem
(name gem-name) ;string
(platform gem-platform) ;string
(version gem-version) ;string
(authors gem-authors) ;string
(licenses gem-licenses "licenses" ;list of strings
(lambda (licenses)
;; This is sometimes #nil (the JSON 'null' value). Arrange
;; to always return a list.
(cond ((not licenses) '())
((vector? licenses) (vector->list licenses))
(else '()))))
(info gem-info)
(sha256 gem-sha256 "sha" ;bytevector
base16-string->bytevector)
(home-page gem-home-page "homepage_uri") ;string
(dependencies gem-dependencies "dependencies" ;<gem-dependencies>
json->gem-dependencies))
(define-json-mapping <gem-dependencies> make-gem-dependencies
gem-dependencies?
json->gem-dependencies
(development gem-dependencies-development ;list of <gem-dependency>
"development"
json->gem-dependency-list)
(runtime gem-dependencies-runtime ;list of <gem-dependency>
"runtime"
json->gem-dependency-list))
(define (json->gem-dependency-list vector)
(if vector
(map json->gem-dependency (vector->list vector))
'()))
(define-json-mapping <gem-dependency> make-gem-dependency gem-dependency?
json->gem-dependency
(name gem-dependency-name) ;string
(requirements gem-dependency-requirements)) ;string
\f
(define (rubygems-fetch name)
"Return a <gem> record for the package NAME, or #f on failure."
(and=> (json-fetch
(string-append "https://rubygems.org/api/v1/gems/" name ".json"))
json->gem))
(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 hash home-page synopsis description
dependencies licenses)
"Return the `package' s-expression for a Ruby package with the given NAME,
VERSION, HASH, HOME-PAGE, DESCRIPTION, DEPENDENCIES, and LICENSES."
`(package
(name ,(ruby-package-name name))
(version ,version)
(source (origin
(method url-fetch)
(uri (rubygems-uri ,name version))
(sha256
(base32
,(bytevector->nix-base32-string hash)))))
(build-system ruby-build-system)
,@(if (null? dependencies)
'()
`((propagated-inputs
(,'quasiquote
,(map (lambda (name)
`(,name
(,'unquote
,(string->symbol name))))
dependencies)))))
(synopsis ,synopsis)
(description ,description)
(home-page ,home-page)
(license ,(match licenses
(() #f)
((license) (license->symbol license))
(_ `(list ,@(map license->symbol licenses)))))))
(define* (gem->guix-package package-name #:optional (repo 'rubygems) version)
"Fetch the metadata for PACKAGE-NAME from rubygems.org, and return the
`package' s-expression corresponding to that package, or #f on failure."
(let ((gem (rubygems-fetch package-name)))
(if gem
(let* ((dependencies-names (map gem-dependency-name
(gem-dependencies-runtime
(gem-dependencies gem))))
(dependencies (map (lambda (dep)
(if (string=? dep "bundler")
"bundler" ; special case, no prefix
(ruby-package-name dep)))
dependencies-names))
(licenses (map string->license (gem-licenses gem))))
(values (make-gem-sexp (gem-name gem) (gem-version gem)
(gem-sha256 gem) (gem-home-page gem)
(gem-info gem)
(beautify-description (gem-info gem))
dependencies
licenses)
dependencies-names))
(values #f '()))))
(define (guix-package->gem-name package)
"Given a PACKAGE built from rubygems.org, return the name of the
package on RubyGems."
(let ((source-url (and=> (package-source package) origin-uri)))
;; The URL has the form:
;; 'https://rubygems.org/downloads/' +
;; package name + '-' + version + '.gem'
;; e.g. "https://rubygems.org/downloads/hashery-2.1.1.gem"
(substring source-url 31 (string-rindex source-url #\-))))
(define (string->license str)
"Convert the string STR into a license object."
(match str
("GNU LGPL" license:lgpl2.0)
("GPL" license:gpl3)
((or "BSD" "BSD License") license:bsd-3)
((or "MIT" "MIT license" "Expat license") license:expat)
("Public domain" license:public-domain)
((or "Apache License, Version 2.0" "Apache 2.0") license:asl2.0)
(_ #f)))
(define gem-package?
(url-prefix-predicate "https://rubygems.org/downloads/"))
(define (latest-release package)
"Return an <upstream-source> for the latest release of PACKAGE."
(let* ((gem-name (guix-package->gem-name package))
(gem (rubygems-fetch gem-name))
(version (gem-version gem))
(url (rubygems-uri gem-name version)))
(upstream-source
(package (package-name package))
(version version)
(urls (list url)))))
(define %gem-updater
(upstream-updater
(name 'gem)
(description "Updater for RubyGem packages")
(pred gem-package?)
(latest latest-release)))
(define* (gem-recursive-import package-name #:optional version)
(recursive-import package-name '()
#:repo->guix-package gem->guix-package
#:guix-name ruby-package-name))
|