guix/svn-download.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org>
   3 ;;; Copyright © 2014 Sree Harsha Totakura <sreeharsha@totakura.in>
   4 ;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
   5 ;;;
   6 ;;; This file is part of GNU Guix.
   7 ;;;
   8 ;;; GNU Guix is free software; you can redistribute it and/or modify it
   9 ;;; under the terms of the GNU General Public License as published by
  10 ;;; the Free Software Foundation; either version 3 of the License, or (at
  11 ;;; your option) any later version.
  12 ;;;
  13 ;;; GNU Guix is distributed in the hope that it will be useful, but
  14 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;;; GNU General Public License for more details.
  17 ;;;
  18 ;;; You should have received a copy of the GNU General Public License
  19 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 (define-module (guix svn-download)
  22   #:use-module (guix records)
  23   #:use-module (guix gexp)
  24   #:use-module (guix store)
  25   #:use-module (guix monads)
  26   #:use-module (guix packages)
  27   #:use-module (guix utils)
  28   #:use-module ((guix build svn) #:prefix build:)
  29   #:use-module (ice-9 match)
  30   #:export (svn-reference
  31             svn-reference?
  32             svn-reference-url
  33             svn-reference-revision
  34             svn-fetch
  35             download-svn-to-store))
  36
  37 ;;; Commentary:
  38 ;;;
  39 ;;; An <origin> method that fetches a specific revision from a Subversion
  40 ;;; repository.  The repository URL and REVISION are specified with a
  41 ;;; <svn-reference> object.  REVISION should be specified as a number.
  42 ;;;
  43 ;;; Code:
  44
  45 (define-record-type* <svn-reference>
  46   svn-reference make-svn-reference
  47   svn-reference?
  48   (url       svn-reference-url)                    ; string
  49   (revision  svn-reference-revision)               ; number
  50   (user-name svn-reference-user-name (default #f))
  51   (password  svn-reference-password (default #f)))
  52
  53 (define (subversion-package)
  54   "Return the default Subversion package."
  55   (let ((distro (resolve-interface '(gnu packages version-control))))
  56     (module-ref distro 'subversion)))
  57
  58 (define* (svn-fetch ref hash-algo hash
  59                     #:optional name
  60                     #:key (system (%current-system)) (guile (default-guile))
  61                     (svn (subversion-package)))
  62   "Return a fixed-output derivation that fetches REF, a <svn-reference>
  63 object.  The output is expected to have recursive hash HASH of type
  64 HASH-ALGO (a symbol).  Use NAME as the file name, or a generic name if #f."
  65   (define build
  66     (with-imported-modules '((guix build svn)
  67                              (guix build utils))
  68       #~(begin
  69           (use-modules (guix build svn))
  70           (svn-fetch '#$(svn-reference-url ref)
  71                      '#$(svn-reference-revision ref)
  72                      #$output
  73                      #:svn-command (string-append #+svn "/bin/svn")
  74                      #:user-name #$(svn-reference-user-name ref)
  75                      #:password #$(svn-reference-password ref)))))
  76
  77   (mlet %store-monad ((guile (package->derivation guile system)))
  78     (gexp->derivation (or name "svn-checkout") build
  79                       #:system system
  80                       #:hash-algo hash-algo
  81                       #:hash hash
  82                       #:recursive? #t
  83                       #:guile-for-build guile
  84                       #:local-build? #t)))
  85
  86 (define* (download-svn-to-store store ref
  87                                 #:optional (name (basename (svn-reference-url ref)))
  88                                 #:key (log (current-error-port)))
  89   "Download from REF, a <svn-reference> object to STORE.  Write progress
  90 reports to LOG."
  91   (call-with-temporary-directory
  92    (lambda (temp)
  93      (let ((result
  94             (parameterize ((current-output-port log))
  95               (build:svn-fetch (svn-reference-url ref)
  96                                (svn-reference-revision ref)
  97                                temp
  98                                #:user-name (svn-reference-user-name ref)
  99                                #:password (svn-reference-password ref)))))
 100        (and result
 101             (add-to-store store name #t "sha256" temp))))))
 102
 103 ;;; svn-download.scm ends here