blob: eda54cb37a0a5202bfe46ccf45d7d062966cb081 (
plain)
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
|
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015 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 build profiles)
#:use-module (guix build union)
#:use-module (guix build utils)
#:use-module (guix search-paths)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:use-module (ice-9 pretty-print)
#:export (build-profile))
;;; Commentary:
;;;
;;; Build a user profile (essentially the union of all the installed packages)
;;; with its associated meta-data.
;;;
;;; Code:
(define (abstract-profile profile)
"Return a procedure that replaces PROFILE in VALUE with a reference to the
'GUIX_PROFILE' environment variable. This allows users to specify what the
user-friendly name of the profile is, for instance ~/.guix-profile rather than
/gnu/store/...-profile."
(let ((replacement (string-append "${GUIX_PROFILE:-" profile "}")))
(match-lambda
((search-path . value)
(let* ((separator (search-path-specification-separator search-path))
(items (string-tokenize* value separator))
(crop (cute string-drop <> (string-length profile))))
(cons search-path
(string-join (map (lambda (str)
(string-append replacement (crop str)))
items)
separator)))))))
(define (write-environment-variable-definition port)
"Write the given environment variable definition to PORT."
(match-lambda
((search-path . value)
(display (search-path-definition search-path value #:kind 'prefix)
port)
(newline port))))
(define* (build-profile output inputs
#:key manifest search-paths)
"Build a user profile from INPUTS in directory OUTPUT. Write MANIFEST, an
sexp, to OUTPUT/manifest. Create OUTPUT/etc/profile with Bash definitions for
all the variables listed in SEARCH-PATHS."
;; Make the symlinks.
(union-build output inputs
#:log-port (%make-void-port "w"))
;; Store meta-data.
(call-with-output-file (string-append output "/manifest")
(lambda (p)
(pretty-print manifest p)))
;; Add a ready-to-use Bash profile.
(mkdir-p (string-append output "/etc"))
(call-with-output-file (string-append output "/etc/profile")
(lambda (port)
;; The use of $GUIX_PROFILE described below is not great. Another
;; option would have been to use "$1" and have users run:
;;
;; source ~/.guix-profile/etc/profile ~/.guix-profile
;;
;; However, when 'source' is used with no arguments, $1 refers to the
;; first positional parameter of the calling scripts, so we can rely on
;; it.
(display "\
# Source this file to define all the relevant environment variables in Bash
# for this profile. You may want to define the 'GUIX_PROFILE' environment
# variable to point to the \"visible\" name of the profile, like this:
#
# GUIX_PROFILE=/path/to/profile
# source /path/to/profile/etc/profile
#
# When GUIX_PROFILE is undefined, the various environment variables refer
# to this specific profile generation.
\n" port)
(let ((variables (evaluate-search-paths (cons $PATH search-paths)
(list output))))
(for-each (write-environment-variable-definition port)
(map (abstract-profile output) variables))))))
;;; profile.scm ends here
|