From 1c69e4ce3f33242ee8d209b8078fc78a73355446 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Mon, 29 Dec 2014 20:52:08 +0100
Subject: [PATCH] list-packages: Expand 'mirror://' URIs for patches.

* build-aux/list-packages.scm (package->sxml)[patches](patch-url): Use
  'maybe-expand-mirrors' to get the real URL.
---
 build-aux/list-packages.scm | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/build-aux/list-packages.scm b/build-aux/list-packages.scm
index 6e0455a7a0..c55e84a76b 100755
--- a/build-aux/list-packages.scm
+++ b/build-aux/list-packages.scm
@@ -27,6 +27,8 @@ (define-module (list-packages)
   #:use-module (guix packages)
   #:use-module (guix licenses)
   #:use-module (guix gnu-maintenance)
+  #:use-module ((guix download) #:select (%mirrors))
+  #:use-module ((guix build download) #:select (maybe-expand-mirrors))
   #:use-module (gnu packages)
   #:use-module (sxml simple)
   #:use-module (sxml fold)
@@ -107,9 +109,12 @@ (define patch-url
          "http://git.savannah.gnu.org/cgit/guix.git/tree/gnu/packages/patches/"
          (basename patch)))
        ((? origin? patch)
-        (match (origin-uri patch)
-          ((? string? uri) uri)
-          ((head . tail) head)))))
+        (uri->string
+         (first (maybe-expand-mirrors (string->uri
+                                       (match (origin-uri patch)
+                                         ((? string? uri) uri)
+                                         ((head . tail) head)))
+                                      %mirrors))))))
 
     (define patch-name
       (match-lambda