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
| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2014 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 scripts prefetch)
#:use-module (guix derivations)
#:use-module (guix packages)
#:use-module (guix store)
#:use-module (guix ui)
#:use-module (guix utils)
#:use-module (guix scripts build)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-37)
#:export (guix-prefetch))
;;; Commentary:
;;;
;;; This program is used to download and add to the store all inputs that are
;;; needed to build the specified packages.
;;;
;;; Code.
(define (derivation-input->derivation input)
(call-with-input-file (derivation-input-path input)
read-derivation))
(define* (derivations-to-prefetch store package #:key (use-substitutes? #t))
"Return the list of fixed-output derivations for PACKAGE."
(filter fixed-output-derivation?
(map derivation-input->derivation
(derivation-prerequisites-to-build
store
(package-derivation store package)
#:use-substitutes? use-substitutes?))))
\f
;;;
;;; Command-line options.
;;;
(define %default-options
'((substitutes? . #t)))
(define (show-help)
(display (_ "Usage: guix prefetch [OPTION]... PACKAGES...
Download and add to the store all inputs that are needed to build
PACKAGES.\n"))
(display (_ "
-n, --dry-run do not build the derivations"))
(display (_ "
--no-substitutes build instead of resorting to pre-built substitutes"))
(display (_ "
-h, --help display this help and exit"))
(display (_ "
-V, --version display version information and exit"))
(newline)
(show-bug-report-information))
(define %options
;; Specification of the command-line options.
(list (option '("no-substitutes") #f #f
(lambda (opt name arg result . rest)
(apply values
(alist-cons 'substitutes? #f
(alist-delete 'substitutes? result))
rest)))
(option '(#\n "dry-run") #f #f
(lambda (opt name arg result)
(alist-cons 'dry-run? #t result)))
(option '(#\h "help") #f #f
(lambda args
(show-help)
(exit 0)))
(option '(#\V "version") #f #f
(lambda args
(show-version-and-exit "guix prefetch")))))
\f
;;;
;;; Entry point.
;;;
(define (guix-prefetch . args)
(define (parse-options)
;; Return the alist of option values.
(args-fold* args %options
(lambda (opt name arg result)
(leave (_ "~A: unrecognized option~%") name))
(lambda (arg result)
(alist-cons 'argument arg result))
%default-options))
(let* ((opts (parse-options))
(dry-run? (assoc-ref opts 'dry-run?))
(substitutes? (assoc-ref opts 'substitutes?))
(store (open-connection))
(drvs
(append-map (lambda (package)
(derivations-to-prefetch
store
package
#:use-substitutes? substitutes?))
(delete-duplicates
(filter-map (match-lambda
(('argument . value)
(identity ; discard the second value
;; Check that all VALUEs in the list are
;; valid packages before calling
;; 'derivations-to-prefetch'. If VALUE
;; is not a valid package,
;; 'specification->package' will raise
;; an error.
(specification->package value)))
(_ #f))
(reverse opts))))))
(show-what-to-build store
drvs
#:dry-run? dry-run?
#:use-substitutes? substitutes?)
(unless dry-run?
(build-derivations store drvs))))
|