guix/svn-download.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2014, 2015 Ludovic Courtès <ludo@gnu.org>
   3 ;;; Copyright © 2014 Sree Harsha Totakura <sreeharsha@totakura.in>
   4 ;;;
   5 ;;; This file is part of GNU Guix.
   6 ;;;
   7 ;;; GNU Guix is free software; you can redistribute it and/or modify it
   8 ;;; under the terms of the GNU General Public License as published by
   9 ;;; the Free Software Foundation; either version 3 of the License, or (at
  10 ;;; your option) any later version.
  11 ;;;
  12 ;;; GNU Guix is distributed in the hope that it will be useful, but
  13 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 ;;; GNU General Public License for more details.
  16 ;;;
  17 ;;; You should have received a copy of the GNU General Public License
  18 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 (define-module (guix svn-download)
  21   #:use-module (guix records)
  22   #:use-module (guix gexp)
  23   #:use-module (guix store)
  24   #:use-module (guix monads)
  25   #:use-module (guix packages)
  26   #:use-module (ice-9 match)
  27   #:export (svn-reference
  28             svn-reference?
  29             svn-reference-url
  30             svn-reference-revision
  31             svn-fetch))
  32
  33 ;;; Commentary:
  34 ;;;
  35 ;;; An <origin> method that fetches a specific revision from a Subversion
  36 ;;; repository.  The repository URL and REVISION are specified with a
  37 ;;; <svn-reference> object.  REVISION should be specified as a number.
  38 ;;;
  39 ;;; Code:
  40
  41 (define-record-type* <svn-reference>
  42   svn-reference make-svn-reference
  43   svn-reference?
  44   (url      svn-reference-url)                    ; string
  45   (revision svn-reference-revision))              ; number
  46
  47 (define (subversion-package)
  48   "Return the default Subversion package."
  49   (let ((distro (resolve-interface '(gnu packages version-control))))
  50     (module-ref distro 'subversion)))
  51
  52 (define* (svn-fetch ref hash-algo hash
  53                     #:optional name
  54                     #:key (system (%current-system)) (guile (default-guile))
  55                     (svn (subversion-package)))
  56   "Return a fixed-output derivation that fetches REF, a <svn-reference>
  57 object.  The output is expected to have recursive hash HASH of type
  58 HASH-ALGO (a symbol).  Use NAME as the file name, or a generic name if #f."
  59   (define build
  60     #~(begin
  61         (use-modules (guix build svn))
  62         (svn-fetch '#$(svn-reference-url ref)
  63                    '#$(svn-reference-revision ref)
  64                    #$output
  65                    #:svn-command (string-append #+svn "/bin/svn"))))
  66
  67   (mlet %store-monad ((guile (package->derivation guile system)))
  68     (gexp->derivation (or name "svn-checkout") build
  69                       #:system system
  70                       #:hash-algo hash-algo
  71                       #:hash hash
  72                       #:recursive? #t
  73                       #:modules '((guix build svn)
  74                                   (guix build utils))
  75                       #:guile-for-build guile
  76                       #:local-build? #t)))
  77
  78 ;;; svn-download.scm ends here