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
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017, 2020 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2021 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 print)
#:use-module (guix base32)
#:use-module (guix utils)
#:use-module (guix licenses)
#:use-module (guix packages)
#:use-module (guix search-paths)
#:use-module (guix build-system)
#:use-module (gnu packages)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (guix import utils)
#:use-module (ice-9 control)
#:use-module (ice-9 match)
#:export (package->code))
(define (package->code package)
"Return an S-expression representing the source code that produces PACKAGE
when evaluated."
;; The module in which the package PKG is defined
(define (package-module-name pkg)
(map string->symbol
(string-split (string-drop-right
(location-file (package-location pkg)) 4)
#\/)))
;; Return the first candidate variable name that is bound to VAL.
(define (variable-name val mod)
(match (let/ec return
(module-for-each (lambda (sym var)
(if (eq? val (variable-ref var))
(return sym)
#f))
(resolve-interface mod)))
((? symbol? sym) sym)
(_ #f)))
;; Print either license variable name or the code for a license object
(define (license->code lic)
(let ((var (variable-name lic '(guix licenses))))
(if var
(symbol-append 'license: var)
`(license
,(license-name lic)
,(license-uri lic)
,(license-comment lic)))))
(define (search-path-specification->code spec)
`(search-path-specification
(variable ,(search-path-specification-variable spec))
(files (list ,@(search-path-specification-files spec)))
(separator ,(search-path-specification-separator spec))
(file-type (quote ,(search-path-specification-file-type spec)))
(file-pattern ,(search-path-specification-file-pattern spec))))
(define (factorized-uri-code uri version)
(match (factorize-uri uri version)
((? string? uri) uri)
((factorized ...) `(string-append ,@factorized))))
(define (source->code source version)
(let ((uri (origin-uri source))
(method (origin-method source))
(hash (origin-hash source))
(file-name (origin-file-name source))
(patches (origin-patches source)))
`(origin
;; Since 'procedure-name' returns the procedure name within the
;; module where it's defined, not its public name. Thus, try hard to
;; find its public name and use 'procedure-name' as a last resort.
(method ,(or (any (lambda (module)
(variable-name method module))
'((guix download)
(guix git-download)
(guix hg-download)
(guix svn-download)))
(procedure-name method)))
(uri ,(if version
(match uri
((? string? uri)
(factorized-uri-code uri version))
((lst ...)
`(list
,@(map (cut factorized-uri-code <> version) uri))))
uri))
,(if (equal? (content-hash-algorithm hash) 'sha256)
`(sha256 (base32 ,(bytevector->nix-base32-string
(content-hash-value hash))))
`(hash (content-hash ,(bytevector->nix-base32-string
(content-hash-value hash))
,(content-hash-algorithm hash))))
;; FIXME: in order to be able to throw away the directory prefix,
;; we just assume that the patch files can be found with
;; "search-patches".
,@(cond ((null? patches)
'())
((every string? patches)
`((patches (search-patches ,@(map basename patches)))))
(else
`((patches (list ,@(map (match-lambda
((? string? file)
`(search-patch ,file))
((? origin? origin)
(source->code origin #f)))
patches)))))))))
(define (variable-reference module name)
;; FIXME: using '@ certainly isn't pretty, but it avoids having to import
;; the individual package modules.
(list '@ module name))
(define (object->code obj quoted?)
(match obj
((? package? package)
(let* ((module (package-module-name package))
(name (variable-name package module)))
(if quoted?
(list 'unquote (variable-reference module name))
(variable-reference module name))))
((? origin? origin)
(let ((code (source->code origin #f)))
(if quoted?
(list 'unquote code)
code)))
((lst ...)
(let ((lst (map (cut object->code <> #t) lst)))
(if quoted?
lst
(list 'quasiquote lst))))
(obj
obj)))
(define (package-lists->code lsts)
(list 'quasiquote (object->code lsts #t)))
(let ((name (package-name package))
(version (package-version package))
(source (package-source package))
(build-system (package-build-system package))
(arguments (package-arguments package))
(inputs (package-inputs package))
(propagated-inputs (package-propagated-inputs package))
(native-inputs (package-native-inputs package))
(outputs (package-outputs package))
(native-search-paths (package-native-search-paths package))
(search-paths (package-search-paths package))
(replacement (package-replacement package))
(synopsis (package-synopsis package))
(description (package-description package))
(license (package-license package))
(home-page (package-home-page package))
(supported-systems (package-supported-systems package))
(properties (package-properties package)))
`(define-public ,(string->symbol name)
(package
(name ,name)
(version ,version)
(source ,(source->code source version))
,@(match properties
(() '())
(_ `((properties ,properties))))
,@(if replacement
`((replacement ,replacement))
'())
(build-system (@ (guix build-system ,(build-system-name build-system))
,(symbol-append (build-system-name build-system)
'-build-system)))
,@(match arguments
(() '())
(_ `((arguments
,(list 'quasiquote (object->code arguments #t))))))
,@(match outputs
(("out") '())
(outs `((outputs (list ,@outs)))))
,@(match native-inputs
(() '())
(pkgs `((native-inputs ,(package-lists->code pkgs)))))
,@(match inputs
(() '())
(pkgs `((inputs ,(package-lists->code pkgs)))))
,@(match propagated-inputs
(() '())
(pkgs `((propagated-inputs ,(package-lists->code pkgs)))))
,@(if (lset= string=? supported-systems %supported-systems)
'()
`((supported-systems (list ,@supported-systems))))
,@(match (map search-path-specification->code native-search-paths)
(() '())
(paths `((native-search-paths (list ,@paths)))))
,@(match (map search-path-specification->code search-paths)
(() '())
(paths `((search-paths (list ,@paths)))))
(home-page ,home-page)
(synopsis ,synopsis)
(description ,description)
(license ,(if (list? license)
`(list ,@(map license->code license))
(license->code license)))))))
|
