guix-devel/guix/gnu-maintenance.scm

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012 Nikita Karetnikov <nikita@karetnikov.org>
;;; Copyright © 2012 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix gnu-maintenance)
#:use-module (web uri)
#:use-module (web client)
#:use-module (web response)
#:use-module (ice-9 regex)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-26)
#:export (official-gnu-packages))
(define (http-fetch uri)
"Return a string containing the textual data at URI, a string."
(let*-values (((resp data)
(http-get (string->uri uri)))
((code)
(response-code resp)))
(case code
((200)
data)
(else
(error "download failed:" uri code
(response-reason-phrase resp))))))
(define %package-list-url
(string-append "http://cvs.savannah.gnu.org/"
"viewvc/*checkout*/gnumaint/"
"gnupackages.txt?root=womb"))
(define (official-gnu-packages)
"Return a list of GNU packages."
(define %package-line-rx
(make-regexp "^package: (.+)$"))
(let ((lst (string-split (http-fetch %package-list-url) #\nl)))
(filter-map (lambda (line)
(and=> (regexp-exec %package-line-rx line)
(cut match:substring <> 1)))
lst)))