2013-01-05 23:47:50 +00:00
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;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
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2012-06-30 14:37:19 +00:00
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;;;
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2013-01-05 23:47:50 +00:00
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;;; This file is part of GNU Guix.
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2012-06-30 14:37:19 +00:00
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;;;
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2013-01-05 23:47:50 +00:00
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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2012-06-30 14:37:19 +00:00
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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2013-01-05 23:47:50 +00:00
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;;; GNU Guix is distributed in the hope that it will be useful, but
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2012-06-30 14:37:19 +00:00
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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2013-01-05 23:47:50 +00:00
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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2012-06-30 14:37:19 +00:00
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(define-module (distro)
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#:use-module (guix packages)
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#:use-module (guix utils)
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#:use-module (ice-9 ftw)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-39)
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#:export (search-patch
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search-bootstrap-binary
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%patch-directory
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2012-11-25 15:28:52 +00:00
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%bootstrap-binaries-path
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fold-packages
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find-packages-by-name))
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;;; Commentary:
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;;;
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;;; General utilities for the software distribution---i.e., the modules under
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;;; (distro ...).
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;;;
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;;; Code:
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(define _ (cut gettext <> "guix"))
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;; By default, we store patches and bootstrap binaries alongside Guile
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;; modules. This is so that these extra files can be found without
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;; requiring a special setup, such as a specific installation directory
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;; and an extra environment variable. One advantage of this setup is
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;; that everything just works in an auto-compilation setting.
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2012-10-27 20:30:42 +00:00
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(define %patch-path
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(make-parameter
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(map (cut string-append <> "/distro/packages/patches")
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%load-path)))
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2012-10-27 20:30:42 +00:00
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(define %bootstrap-binaries-path
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(make-parameter
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(map (cut string-append <> "/distro/packages/bootstrap")
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%load-path)))
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2012-08-22 15:24:38 +00:00
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(define (search-patch file-name)
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"Search the patch FILE-NAME."
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(search-path (%patch-path) file-name))
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2012-10-17 19:44:25 +00:00
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(define (search-bootstrap-binary file-name system)
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"Search the bootstrap binary FILE-NAME for SYSTEM."
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(search-path (%bootstrap-binaries-path)
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(string-append system "/" file-name)))
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(define %distro-module-directory
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;; Absolute path of the (distro ...) module root.
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(string-append (dirname (search-path %load-path "distro.scm"))
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"/distro/packages"))
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(define (package-files)
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"Return the list of files that implement distro modules."
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(define prefix-len
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distro: Add the `guile', `typesetting', and `databases' package modules.
* distro.scm (package-files): Adjust PREFIX-LEN to use the top-level
directory, not %DISTRO-MODULE-DIRECTORY.
* distro/packages/base.scm (guile-reader, guile-reader/guile-1.8,
guile-reader/guile-2.0, lout, recutils): Move to...
* distro/packages/guile.scm, distro/packages/typesetting.scm,
distro/packages/databases.scm: ... here. New files.
* Makefile.am (MODULES): Add them.
(EXTRA_DIST): Add `.dir-locals.el'.
* .dir-locals.el: New file, with settings formerly in `base.scm'.
2012-09-26 20:17:41 +00:00
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(string-length (dirname (search-path %load-path "distro.scm"))))
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(file-system-fold (const #t) ; enter?
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(lambda (path stat result) ; leaf
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(if (string-suffix? ".scm" path)
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(cons (substring path prefix-len) result)
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result))
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(lambda (path stat result) ; down
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result)
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(lambda (path stat result) ; up
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result)
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(const #f) ; skip
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(lambda (path stat errno result)
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(format (current-error-port)
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(_ "warning: cannot access `~a': ~a~%")
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path (strerror errno))
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result)
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'()
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%distro-module-directory
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stat))
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(define (package-modules)
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"Return the list of modules that provide packages for the distribution."
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(define not-slash
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(char-set-complement (char-set #\/)))
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(filter-map (lambda (path)
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(let ((name (map string->symbol
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(string-tokenize (string-drop-right path 4)
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not-slash))))
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(false-if-exception (resolve-interface name))))
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(package-files)))
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(define (fold-packages proc init)
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"Call (PROC PACKAGE RESULT) for each available package, using INIT as
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the initial value of RESULT."
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(fold (lambda (module result)
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(fold (lambda (var result)
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(if (package? var)
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(proc var result)
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result))
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result
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(module-map (lambda (sym var)
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(false-if-exception (variable-ref var)))
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module)))
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init
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(package-modules)))
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(define* (find-packages-by-name name #:optional version)
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"Return the list of packages with the given NAME. If VERSION is not #f,
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then only return packages whose version is equal to VERSION."
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(define right-package?
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(if version
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(lambda (p)
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(and (string=? (package-name p) name)
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(string=? (package-version p) version)))
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(lambda (p)
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(string=? (package-name p) name))))
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(fold-packages (lambda (package result)
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(if (right-package? package)
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(cons package result)
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result))
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'()))
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