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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
;;; Guix --- Nix package management from Guile. -*- coding: utf-8 -*-
;;; Copyright (C) 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of Guix.
;;;
;;; 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.
;;;
;;; 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 Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix packages)
#:use-module (guix utils)
#:use-module (guix store)
#:use-module (guix build-system)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-9 gnu)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:export (location
location?
location-file
location-line
location-column
origin
origin?
origin-uri
origin-method
origin-sha256
origin-file-name
base32
package
package?
package-name
package-version
package-source
package-build-system
package-arguments
package-inputs
package-native-inputs
package-propagated-inputs
package-outputs
package-search-paths
package-description
package-long-description
package-license
package-platforms
package-maintainers
package-properties
package-location
package-transitive-inputs
package-transitive-propagated-inputs
package-source-derivation
package-derivation
package-cross-derivation
&package-error
package-error-package
&package-input-error
package-error-invalid-input))
;;; Commentary:
;;;
;;; This module provides a high-level mechanism to define packages in a
;;; Guix-based distribution.
;;;
;;; Code:
;; A source location.
(define-record-type <location>
(make-location file line column)
location?
(file location-file) ; file name
(line location-line) ; 1-indexed line
(column location-column)) ; 0-indexed column
(define location
(memoize
(lambda (file line column)
"Return the <location> object for the given FILE, LINE, and COLUMN."
(and line column file
(make-location file line column)))))
(define (source-properties->location loc)
"Return a location object based on the info in LOC, an alist as returned
by Guile's `source-properties', `frame-source', `current-source-location',
etc."
(let ((file (assq-ref loc 'filename))
(line (assq-ref loc 'line))
(col (assq-ref loc 'column)))
(location file (and line (+ line 1)) col)))
;; The source of a package, such as a tarball URL and fetcher---called
;; "origin" to avoid name clash with `package-source', `source', etc.
(define-record-type* <origin>
origin make-origin
origin?
(uri origin-uri) ; string
(method origin-method) ; symbol
(sha256 origin-sha256) ; bytevector
(file-name origin-file-name (default #f))) ; optional file name
(define-syntax base32
(lambda (s)
"Return the bytevector corresponding to the given Nix-base32
representation."
(syntax-case s ()
((_ str)
(string? (syntax->datum #'str))
(with-syntax ((bv (nix-base32-string->bytevector
(syntax->datum #'str))))
#''bv)))))
;; A package.
(define-record-type* <package>
package make-package
package?
(name package-name) ; string
(version package-version) ; string
(source package-source) ; <origin> instance
(build-system package-build-system) ; build system
(arguments package-arguments ; arguments for the build method
(default '()))
(inputs package-inputs ; input packages or derivations
(default '()))
(propagated-inputs package-propagated-inputs ; same, but propagated
(default '()))
(native-inputs package-native-inputs ; native input packages/derivations
(default '()))
(self-native-input? package-self-native-input? ; whether to use itself as
; a native input when cross-
(default #f)) ; compiling
(outputs package-outputs ; list of strings
(default '("out")))
(search-paths package-search-paths ; list of (ENV-VAR (DIRS ...))
(default '())) ; tuples; see
; `set-path-environment-variable'
; (aka. "setup-hook")
(description package-description) ; one-line description
(long-description package-long-description) ; one or two paragraphs
(license package-license (default '()))
(home-page package-home-page)
(platforms package-platforms (default '()))
(maintainers package-maintainers (default '()))
(properties package-properties (default '())) ; alist for anything else
(location package-location
(default (and=> (current-source-location)
source-properties->location))))
(set-record-type-printer! <package>
(lambda (package port)
(let ((loc (package-location package))
(format simple-format))
(format port "#<package ~a-~a ~a:~a ~a>"
(package-name package)
(package-version package)
(location-file loc)
(location-line loc)
(number->string (object-address
package)
16)))))
;; Error conditions.
(define-condition-type &package-error &error
package-error?
(package package-error-package))
(define-condition-type &package-input-error &package-error
package-input-error?
(input package-error-invalid-input))
(define (package-source-derivation store source)
"Return the derivation path for SOURCE, a package source."
(match source
(($ <origin> uri method sha256 name)
(method store uri 'sha256 sha256 name))))
(define (transitive-inputs inputs)
(let loop ((inputs inputs)
(result '()))
(match inputs
(()
(delete-duplicates (reverse result))) ; XXX: efficiency
(((and i (name (? package? p) sub ...)) rest ...)
(let ((t (map (match-lambda
((dep-name derivation ...)
(cons (string-append name "/" dep-name)
derivation)))
(package-propagated-inputs p))))
(loop (append t rest)
(append t (cons i result)))))
((input rest ...)
(loop rest (cons input result))))))
(define (package-transitive-inputs package)
"Return the transitive inputs of PACKAGE---i.e., its direct inputs along
with their propagated inputs, recursively."
(transitive-inputs (append (package-native-inputs package)
(package-inputs package)
(package-propagated-inputs package))))
(define (package-transitive-propagated-inputs package)
"Return the propagated inputs of PACKAGE, and their propagated inputs,
recursively."
(transitive-inputs (package-propagated-inputs package)))
;;;
;;; Package derivations.
;;;
(define %derivation-cache
;; Package to derivation-path mapping.
(make-weak-key-hash-table))
(define (cache package system drv)
"Memoize DRV as the derivation of PACKAGE on SYSTEM."
(hash-set! %derivation-cache (cons package system) drv)
drv)
(define (cached-derivation package system)
"Return the cached derivation path of PACKAGE for SYSTEM, or #f."
(hash-ref %derivation-cache (cons package system)))
(define* (package-derivation store package
#:optional (system (%current-system)))
"Return the derivation of PACKAGE for SYSTEM."
(or (cached-derivation package system)
(match package
(($ <package> name version source (= build-system-builder builder)
args inputs propagated-inputs native-inputs self-native-input?
outputs)
;; TODO: For `search-paths', add a builder prologue that calls
;; `set-path-environment-variable'.
(let ((inputs (map (match-lambda
(((? string? name) (? package? package))
(list name (package-derivation store package)))
(((? string? name) (? package? package)
(? string? sub-drv))
(list name (package-derivation store package)
sub-drv))
(((? string? name)
(and (? string?) (? derivation-path?) drv))
(list name drv))
(((? string? name)
(and (? string?) (? file-exists? file)))
;; Add FILE to the store. When FILE is in the
;; sub-directory of a store path, it needs to be
;; added anyway, so it can be used as a source.
(list name
(add-to-store store (basename file)
#t #f "sha256" file)))
(x
(raise (condition (&package-input-error
(package package)
(input x))))))
(package-transitive-inputs package))))
;; Compute the derivation and cache the result. Caching is
;; important because some derivations, such as the implicit inputs
;; of the GNU build system, will be queried many, many times in a
;; row.
(cache package system
(apply builder
store (string-append name "-" version)
(package-source-derivation store source)
inputs
#:outputs outputs #:system system
(if (procedure? args)
(args system)
args))))))))
(define* (package-cross-derivation store package)
;; TODO
#f)
|