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
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013 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 packages)
#:use-module (guix utils)
#:use-module (guix records)
#:use-module (guix store)
#:use-module (guix base32)
#:use-module (guix derivations)
#:use-module (guix build-system)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9 gnu)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
#:use-module (srfi srfi-35)
#:re-export (%current-system
%current-target-system)
#:export (origin
origin?
origin-uri
origin-method
origin-sha256
origin-file-name
base32
<search-path-specification>
search-path-specification
search-path-specification?
search-path-specification->sexp
package
package?
package-name
package-version
package-full-name
package-source
package-build-system
package-arguments
package-inputs
package-native-inputs
package-propagated-inputs
package-outputs
package-native-search-paths
package-search-paths
package-synopsis
package-description
package-license
package-home-page
package-platforms
package-maintainers
package-properties
package-location
package-field-location
package-transitive-inputs
package-transitive-target-inputs
package-transitive-native-inputs
package-transitive-propagated-inputs
package-source-derivation
package-derivation
package-cross-derivation
package-output
&package-error
package-error?
package-error-package
&package-input-error
package-input-error?
package-error-invalid-input
&package-cross-build-system-error
package-cross-build-system-error?))
;;; Commentary:
;;;
;;; This module provides a high-level mechanism to define packages in a
;;; Guix-based distribution.
;;;
;;; Code:
;; 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))
;; A literal string: do the conversion at expansion time.
(with-syntax ((bv (nix-base32-string->bytevector
(syntax->datum #'str))))
#''bv))
((_ str)
#'(nix-base32-string->bytevector str)))))
;; The specification of a search path.
(define-record-type* <search-path-specification>
search-path-specification make-search-path-specification
search-path-specification?
(variable search-path-specification-variable)
(directories search-path-specification-directories)
(separator search-path-specification-separator (default ":")))
(define (search-path-specification->sexp spec)
"Return an sexp representing SPEC, a <search-path-specification>. The sexp
corresponds to the arguments expected by `set-path-environment-variable'."
(match spec
(($ <search-path-specification> variable directories separator)
`(,variable ,directories ,separator))))
;; 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 '()) (thunked))
(inputs package-inputs ; input packages or derivations
(default '()) (thunked))
(propagated-inputs package-propagated-inputs ; same, but propagated
(default '()) (thunked))
(native-inputs package-native-inputs ; native input packages/derivations
(default '()) (thunked))
(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")))
; lists of
; <search-path-specification>,
; for native and cross
; inputs
(native-search-paths package-native-search-paths (default '()))
(search-paths package-search-paths (default '()))
(synopsis package-synopsis) ; one-line description
(description package-description) ; one or two paragraphs
(license package-license)
(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)))))
(define (package-field-location package field)
"Return the source code location of the definition of FIELD for PACKAGE, or
#f if it could not be determined."
(define (goto port line column)
(unless (and (= (port-column port) (- column 1))
(= (port-line port) (- line 1)))
(unless (eof-object? (read-char port))
(goto port line column))))
(match (package-location package)
(($ <location> file line column)
(catch 'system
(lambda ()
(call-with-input-file (search-path %load-path file)
(lambda (port)
(goto port line column)
(match (read port)
(('package inits ...)
(let ((field (assoc field inits)))
(match field
((_ value)
;; Put the `or' here, and not in the first argument of
;; `and=>', to work around a compiler bug in 2.0.5.
(or (and=> (source-properties value)
source-properties->location)
(and=> (source-properties field)
source-properties->location)))
(_
#f))))
(_
#f)))))
(lambda _
#f)))
(_ #f)))
;; 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-condition-type &package-cross-build-system-error &package-error
package-cross-build-system-error?)
(define (package-full-name package)
"Return the full name of PACKAGE--i.e., `NAME-VERSION'."
(string-append (package-name package) "-" (package-version package)))
(define* (package-source-derivation store source
#:optional (system (%current-system)))
"Return the derivation path for SOURCE, a package source, for SYSTEM."
(match source
(($ <origin> uri method sha256 name)
(method store uri 'sha256 sha256 name
#:system system))))
(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-target-inputs package)
"Return the transitive target inputs of PACKAGE---i.e., its direct inputs
along with their propagated inputs, recursively. This only includes inputs
for the target system, and not native inputs."
(transitive-inputs (append (package-inputs package)
(package-propagated-inputs package))))
(define (package-transitive-native-inputs package)
"Return the transitive native inputs of PACKAGE---i.e., its direct inputs
along with their propagated inputs, recursively. This only includes inputs
for the host system (\"native inputs\"), and not target inputs."
(transitive-inputs (package-native-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 100))
(define (cache package system thunk)
"Memoize the return values of THUNK as the derivation of PACKAGE on
SYSTEM."
(let ((vals (call-with-values thunk list)))
;; Use `hashq-set!' instead of `hash-set!' because `hash' returns the
;; same value for all structs (as of Guile 2.0.6), and because pointer
;; equality is sufficient in practice.
(hashq-set! %derivation-cache package `((,system ,@vals)))
(apply values vals)))
(define-syntax-rule (cached package system body ...)
"Memoize the result of BODY for the arguments PACKAGE and SYSTEM.
Return the cached result when available."
(let ((thunk (lambda () body ...)))
(match (hashq-ref %derivation-cache package)
((alist (... ...))
(match (assoc-ref alist system)
((vals (... ...))
(apply values vals))
(#f
(cache package system thunk))))
(#f
(cache package system thunk)))))
(define* (expand-input store package input system #:optional cross-system)
"Expand INPUT, an input tuple, such that it contains only references to
derivation paths or store paths. PACKAGE is only used to provide contextual
information in exceptions."
(define (intern file)
;; Add FILE to the store. Set the `recursive?' bit to #t, so that
;; file permissions are preserved.
(add-to-store store (basename file) #t "sha256" file))
(define derivation
(if cross-system
(cut package-cross-derivation store <> cross-system system)
(cut package-derivation store <> system)))
(match input
(((? string? name) (? package? package))
(list name (derivation package)))
(((? string? name) (? package? package)
(? string? sub-drv))
(list name (derivation 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 (intern file)))
(((? string? name) (? origin? source))
(list name (package-source-derivation store source system)))
(x
(raise (condition (&package-input-error
(package package)
(input x)))))))
(define* (package-derivation store package
#:optional (system (%current-system)))
"Return the derivation path and corresponding <derivation> object of
PACKAGE for SYSTEM."
;; 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.
(cached package system
;; Bind %CURRENT-SYSTEM so that thunked field values can refer
;; to it.
(parameterize ((%current-system system)
(%current-target-system #f))
(match package
(($ <package> name version source (= build-system-builder builder)
args inputs propagated-inputs native-inputs self-native-input?
outputs)
(let* ((inputs (package-transitive-inputs package))
(input-drvs (map (cut expand-input
store package <> system)
inputs))
(paths (delete-duplicates
(append-map (match-lambda
((_ (? package? p) _ ...)
(package-native-search-paths
p))
(_ '()))
inputs))))
(apply builder
store (package-full-name package)
(and source
(package-source-derivation store source system))
input-drvs
#:search-paths paths
#:outputs outputs #:system system
(args))))))))
(define* (package-cross-derivation store package target
#:optional (system (%current-system)))
"Cross-build PACKAGE for TARGET (a GNU triplet) from host SYSTEM (a Guix
system identifying string)."
(cached package (cons system target)
;; Bind %CURRENT-SYSTEM so that thunked field values can refer
;; to it.
(parameterize ((%current-system system)
(%current-target-system target))
(match package
(($ <package> name version source
(= build-system-cross-builder builder)
args inputs propagated-inputs native-inputs self-native-input?
outputs)
(unless builder
(raise (condition
(&package-cross-build-system-error
(package package)))))
(let* ((inputs (package-transitive-target-inputs package))
(input-drvs (map (cut expand-input
store package <>
system target)
inputs))
(host (append (if self-native-input?
`(("self" ,package))
'())
(package-transitive-native-inputs package)))
(host-drvs (map (cut expand-input
store package <> system)
host))
(all (append host inputs))
(paths (delete-duplicates
(append-map (match-lambda
((_ (? package? p) _ ...)
(package-search-paths p))
(_ '()))
all)))
(npaths (delete-duplicates
(append-map (match-lambda
((_ (? package? p) _ ...)
(package-native-search-paths
p))
(_ '()))
all))))
(apply builder
store (package-full-name package) target
(and source
(package-source-derivation store source system))
input-drvs host-drvs
#:search-paths paths
#:native-search-paths npaths
#:outputs outputs #:system system
(args))))))))
(define* (package-output store package output
#:optional (system (%current-system)))
"Return the output path of PACKAGE's OUTPUT for SYSTEM---where OUTPUT is the
symbolic output name, such as \"out\". Note that this procedure calls
`package-derivation', which is costly."
(let-values (((_ drv)
(package-derivation store package system)))
(derivation-output-path
(assoc-ref (derivation-outputs drv) output))))
|