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
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 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 pypi)
#:use-module (ice-9 binary-ports)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:use-module (rnrs bytevectors)
#:use-module (json)
#:use-module (web uri)
#:use-module (guix utils)
#:use-module (guix import utils)
#:use-module (guix base32)
#:use-module (guix hash)
#:use-module (guix packages)
#:use-module (guix licenses)
#:use-module (guix build-system python)
#:use-module ((guix build download) #:prefix build:)
#:use-module (gnu packages python)
#:export (pypi->guix-package))
(define (hash-table->alist table)
"Return an alist represenation of TABLE."
(map (match-lambda
((key . (lst ...))
(cons key
(map (lambda (x)
(if (hash-table? x)
(hash-table->alist x)
x))
lst)))
((key . (? hash-table? table))
(cons key (hash-table->alist table)))
(pair pair))
(hash-map->list cons table)))
(define (flatten lst)
"Return a list that recursively concatenates all sub-lists of LIST."
(fold-right
(match-lambda*
(((sub-list ...) memo)
(append (flatten sub-list) memo))
((elem memo)
(cons elem memo)))
'() lst))
(define (join lst delimiter)
"Return a list that contains the elements of LST, each separated by
DELIMETER."
(match lst
(() '())
((elem)
(list elem))
((elem . rest)
(cons* elem delimiter (join rest delimiter)))))
(define (assoc-ref* alist key . rest)
"Return the value for KEY from ALIST. For each additional key specified,
recursively apply the procedure to the sub-list."
(if (null? rest)
(assoc-ref alist key)
(apply assoc-ref* (assoc-ref alist key) rest)))
(define string->license
(match-lambda
("GNU LGPL" lgpl2.0)
("GPL" gpl3)
((or "BSD" "BSD License") bsd-3)
((or "MIT" "MIT license" "Expat license") expat)
("Public domain" public-domain)
(_ #f)))
(define (url-fetch url file-name)
"Save the contents of URL to FILE-NAME."
(parameterize ((current-output-port (current-error-port)))
(build:url-fetch url file-name)))
(define (json-fetch url)
"Return an alist representation of the JSON resource URL."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch url temp)
(hash-table->alist
(call-with-input-file temp json->scm))))))
(define (pypi-fetch name)
"Return an alist representation of the PyPI metadata for the package NAME."
(json-fetch (string-append "https://pypi.python.org/pypi/" name "/json")))
(define (latest-source-release pypi-package)
"Return the latest source release for PYPI-PACKAGE."
(let ((releases (assoc-ref* pypi-package "releases"
(assoc-ref* pypi-package "info" "version"))))
(or (find (lambda (release)
(string=? "sdist" (assoc-ref release "packagetype")))
releases)
(error "No source release found for pypi package: "
(assoc-ref* pypi-package "info" "name")
(assoc-ref* pypi-package "info" "version")))))
(define (snake-case str)
"Return a downcased version of the string STR where dashes are replaced with
underscores."
(string-join (string-split (string-downcase str) #\_) "-"))
(define (guix-hash-url url)
"Download the resource at URL and return the hash in nix-base32 format."
(call-with-temporary-output-file
(lambda (temp port)
(and (url-fetch url temp)
(bytevector->nix-base32-string
(call-with-input-file temp port-sha256))))))
(define (make-pypi-sexp name version source-url home-page synopsis
description license)
"Return the `package' s-expression for a python package with the given NAME,
VERSION, SOURCE-URL, HOME-PAGE, SYNOPSIS, DESCRIPTION, and LICENSE."
`(package
(name ,(string-append "python-" (snake-case name)))
(version ,version)
(source (origin
(method url-fetch)
(uri (string-append ,@(factorize-uri source-url version)))
(sha256
(base32
,(guix-hash-url source-url)))))
(build-system python-build-system)
(inputs
`(("python-setuptools" ,python-setuptools)))
(home-page ,home-page)
(synopsis ,synopsis)
(description ,description)
(license ,(assoc-ref `((,lgpl2.0 . lgpl2.0)
(,gpl3 . gpl3)
(,bsd-3 . bsd-3)
(,expat . expat)
(,public-domain . public-domain))
license))))
(define (pypi->guix-package package-name)
"Fetch the metadata for PACKAGE-NAME from pypi.python.org, and return the
`package' s-expression corresponding to that package."
(let ((package (pypi-fetch package-name)))
(let ((name (assoc-ref* package "info" "name"))
(version (assoc-ref* package "info" "version"))
(release (assoc-ref (latest-source-release package) "url"))
(synopsis (assoc-ref* package "info" "summary"))
(description (assoc-ref* package "info" "summary"))
(home-page (assoc-ref* package "info" "home_page"))
(license (string->license (assoc-ref* package "info" "license"))))
(make-pypi-sexp name version release home-page synopsis
description license))))
|