Re: [PATCH] Add (guix gnu-maintenance).

[Nikita Karetnikov <nikita.karetnikov@gmail.com>]

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I've slightly changed it.

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From d07bf47caacc2bc71f5fea85a2963ee81bf29f9c Mon Sep 17 00:00:00 2001
From: Nikita Karetnikov <nikita@karetnikov.org>
Date: Tue, 4 Dec 2012 03:10:39 +0000
Subject: [PATCH] Add (guix gnu-maintenance).

* guix/gnu-maintenance.scm: New file.
* Makefile.am (MODULES): Add it.
---
 Makefile.am              |    1 +
 guix/gnu-maintenance.scm |   56 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+), 0 deletions(-)
 create mode 100644 guix/gnu-maintenance.scm

diff --git a/Makefile.am b/Makefile.am
index 8bb3b55..0585b1e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -27,6 +27,7 @@ MODULES =					\
   guix/utils.scm				\
   guix/derivations.scm				\
   guix/download.scm				\
+  guix/gnu-maintenance.scm			\
   guix/build-system.scm				\
   guix/build-system/gnu.scm			\
   guix/build-system/trivial.scm			\
diff --git a/guix/gnu-maintenance.scm b/guix/gnu-maintenance.scm
new file mode 100644
index 0000000..8ceb4e7
--- /dev/null
+++ b/guix/gnu-maintenance.scm
@@ -0,0 +1,56 @@
+;;; Guix --- Nix package management from Guile.         -*- coding: utf-8 -*-
+;;; Copyright (C) 2012 Nikita Karetnikov <nikita@karetnikov.org>
+;;;
+;;; This file is part of Guix.
+;;;
+;;; 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.
+;;;
+;;; 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 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 (srfi srfi-11)
+  #:use-module (srfi srfi-26)
+  #:use-module (ice-9 regex))
+
+(define (http-fetch str)
+  "Fetch a file from STR, which should be a URI."
+  (let*-values (((resp data)
+                (http-get (string->uri str)))
+               ((code)
+                (response-code resp)))
+    (case code
+      ((200)
+       data)
+      (else
+       (error "download failed:" str code
+              (string-downcase (response-reason-phrase resp)))))))
+
+(define (rx-filter lst rx)
+  "Filter a list using a regexp."
+  (map (cut match:substring <>)
+       ((cut delete #f <>)
+        (map (cut regexp-exec rx <>)
+             lst))))
+
+(define %womb
+  (string-append "http://cvs.savannah.gnu.org/"
+                 "viewvc/*checkout*/gnumaint/"
+                 "gnupackages.txt?root=womb"))
+
+(define-public (gnu-packages-womb)
+  "Return a list of GNU packages."
+  (let ((lst (string-split (http-fetch %womb) #\nl)))
+    (map (cut string-drop <> 9)
+         (rx-filter lst (make-regexp "^package: (.+)$")))))
-- 
1.7.5.4