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packages: Add 'search-auxiliary-file'. 

Suggested-by: Ludovic Courtès <ludo@gnu.org> at
<http://lists.gnu.org/archive/html/guix-devel/2016-12/msg01174.html>.

* gnu/packages.scm (%auxiliary-files-path): New variable.
(search-auxiliary-file): New procedure.
This commit is contained in:
Alex Kost 2017-02-17 13:17:03 +03:00
parent 2982889d68
commit 96eaa55ffb
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1 changed files with 18 additions and 6 deletions
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gnu/packages.scm
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@ -2,7 +2,7 @@
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2014 Eric Bavier <bavier@member.fsf.org>
;;; Copyright © 2016 Alex Kost <alezost@gmail.com>
;;; Copyright © 2016, 2017 Alex Kost <alezost@gmail.com>
;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
;;;
;;; This file is part of GNU Guix.
@ -40,8 +40,10 @@
#:use-module (srfi srfi-39)
#:export (search-patch
search-patches
search-auxiliary-file
search-bootstrap-binary
%patch-path
%auxiliary-files-path
%bootstrap-binaries-path
%package-module-path
@ -62,17 +64,27 @@
;;;
;;; Code:
;; By default, we store patches and bootstrap binaries alongside Guile
;; modules. This is so that these extra files can be found without
;; requiring a special setup, such as a specific installation directory
;; and an extra environment variable. One advantage of this setup is
;; that everything just works in an auto-compilation setting.
;; By default, we store patches, auxiliary files and bootstrap binaries
;; alongside Guile modules. This is so that these extra files can be
;; found without requiring a special setup, such as a specific
;; installation directory and an extra environment variable. One
;; advantage of this setup is that everything just works in an
;; auto-compilation setting.
(define %bootstrap-binaries-path
(make-parameter
(map (cut string-append <> "/gnu/packages/bootstrap")
%load-path)))
(define %auxiliary-files-path
(make-parameter
(map (cut string-append <> "/gnu/packages/aux-files")
%load-path)))
(define (search-auxiliary-file file-name)
"Search the auxiliary FILE-NAME. Return #f if not found."
(search-path (%auxiliary-files-path) file-name))
(define (search-patch file-name)
"Search the patch FILE-NAME. Raise an error if not found."
(or (search-path (%patch-path) file-name)