guix/gnu-maintenance.scm

   1 ;;; GNU Guix --- Functional package management for GNU
   2 ;;; Copyright © 2012 Nikita Karetnikov <nikita@karetnikov.org>
   3 ;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
   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 gnu-maintenance)
  21   #:use-module (web uri)
  22   #:use-module (web client)
  23   #:use-module (web response)
  24   #:use-module (ice-9 regex)
  25   #:use-module (srfi srfi-1)
  26   #:use-module (srfi srfi-11)
  27   #:use-module (srfi srfi-26)
  28   #:export (official-gnu-packages))
  29
  30 (define (http-fetch uri)
  31   "Return a string containing the textual data at URI, a string."
  32   (let*-values (((resp data)
  33                 (http-get (string->uri uri)))
  34                ((code)
  35                 (response-code resp)))
  36     (case code
  37       ((200)
  38        data)
  39       (else
  40        (error "download failed:" uri code
  41               (response-reason-phrase resp))))))
  42
  43 (define %package-list-url
  44   (string-append "http://cvs.savannah.gnu.org/"
  45                  "viewvc/*checkout*/gnumaint/"
  46                  "gnupackages.txt?root=womb"))
  47
  48 (define (official-gnu-packages)
  49   "Return a list of GNU packages."
  50   (define %package-line-rx
  51     (make-regexp "^package: (.+)$"))
  52
  53   (let ((lst (string-split (http-fetch %package-list-url) #\nl)))
  54     (filter-map (lambda (line)
  55                   (and=> (regexp-exec %package-line-rx line)
  56                          (cut match:substring <> 1)))
  57                 lst)))