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1 | ;;; GNU Guix --- Functional package management for GNU |
2 | ;;; Copyright © 2014 Ludovic Courtès <ludo@gnu.org> | |
3 | ;;; | |
4 | ;;; This file is part of GNU Guix. | |
5 | ;;; | |
6 | ;;; GNU Guix is free software; you can redistribute it and/or modify it | |
7 | ;;; under the terms of the GNU General Public License as published by | |
8 | ;;; the Free Software Foundation; either version 3 of the License, or (at | |
9 | ;;; your option) any later version. | |
10 | ;;; | |
11 | ;;; GNU Guix is distributed in the hope that it will be useful, but | |
12 | ;;; WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | ;;; GNU General Public License for more details. | |
15 | ;;; | |
16 | ;;; You should have received a copy of the GNU General Public License | |
17 | ;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. | |
18 | ||
19 | (define-module (build-self) | |
20 | #:use-module (gnu) | |
21 | #:use-module (guix) | |
22 | #:use-module (srfi srfi-1) | |
23 | #:export (build)) | |
24 | ||
25 | ;;; Commentary: | |
26 | ;;; | |
27 | ;;; When loaded, this module returns a monadic procedure of at least one | |
28 | ;;; argument: the source tree to build. It returns a derivation that | |
29 | ;;; builds it. | |
30 | ;;; | |
31 | ;;; This file uses modules provided by the already-installed Guix. Those | |
32 | ;;; modules may be arbitrarily old compared to the version we want to | |
33 | ;;; build. Because of that, it must rely on the smallest set of features | |
34 | ;;; that are likely to be provided by the (guix) and (gnu) modules, and by | |
35 | ;;; Guile itself, forever and ever. | |
36 | ;;; | |
37 | ;;; Code: | |
38 | ||
39 | \f | |
40 | ;; The dependencies. Don't refer explicitly to the variables because they | |
41 | ;; could be renamed or shuffled around in modules over time. Conversely, | |
42 | ;; 'find-best-packages-by-name' is expected to always have the same semantics. | |
43 | ||
44 | (define libgcrypt | |
45 | (first (find-best-packages-by-name "libgcrypt" #f))) | |
46 | ||
47 | (define guile-json | |
48 | (first (find-best-packages-by-name "guile-json" #f))) | |
49 | ||
50 | ||
51 | \f | |
52 | ;; The actual build procedure. | |
53 | ||
54 | (define (top-source-directory) | |
55 | "Return the name of the top-level directory of this source tree." | |
56 | (and=> (assoc-ref (current-source-location) 'filename) | |
57 | (lambda (file) | |
58 | (string-append (dirname file) "/..")))) | |
59 | ||
60 | ;; The procedure below is our return value. | |
61 | (define* (build source #:key verbose? | |
62 | #:allow-other-keys | |
63 | #:rest rest) | |
64 | "Return a derivation that unpacks SOURCE into STORE and compiles Scheme | |
65 | files." | |
66 | (define builder | |
67 | #~(begin | |
68 | (use-modules (guix build pull)) | |
69 | ||
70 | (let ((json (string-append #$guile-json "/share/guile/site/2.0"))) | |
71 | (set! %load-path (cons json %load-path)) | |
72 | (set! %load-compiled-path (cons json %load-compiled-path))) | |
73 | ||
74 | (build-guix #$output #$source | |
75 | ||
76 | ;; XXX: This is not perfect, enabling VERBOSE? means | |
77 | ;; building a different derivation. | |
78 | #:debug-port (if #$verbose? | |
79 | (current-error-port) | |
80 | (%make-void-port "w")) | |
81 | #:gcrypt #$libgcrypt))) | |
82 | ||
83 | (gexp->derivation "guix-latest" builder | |
84 | #:modules '((guix build pull) | |
85 | (guix build utils)) | |
86 | ||
87 | ;; Arrange so that our own (guix build …) modules are | |
88 | ;; used. | |
89 | #:module-path (list (top-source-directory)))) | |
90 | ||
91 | ;; This file is loaded by 'guix pull'; return it the build procedure. | |
92 | build | |
93 | ||
94 | ;; Local Variables: | |
95 | ;; eval: (put 'with-load-path 'scheme-indent-function 1) | |
96 | ;; End: | |
97 | ||
98 | ;;; build-self.scm ends here |