From f4131d260d9f884c83d8b0e394137bf62be96436 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Thu, 23 Jan 2020 15:03:34 -0500
Subject: [PATCH] cernlib: add src mirror url

---
 pkgs/development/libraries/physics/cernlib/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/physics/cernlib/default.nix b/pkgs/development/libraries/physics/cernlib/default.nix
index 2a1846e40a64..bd43ae442043 100644
--- a/pkgs/development/libraries/physics/cernlib/default.nix
+++ b/pkgs/development/libraries/physics/cernlib/default.nix
@@ -5,7 +5,10 @@ stdenv.mkDerivation rec {
   pname = "cernlib";
 
   src = fetchurl {
-    url = "https://cernlib.web.cern.ch/cernlib/download/${version}_source/tar/${version}_src.tar.gz";
+    urls = [
+      "https://ftp.riken.jp/cernlib/download/${version}_source/tar/${version}_src.tar.gz"
+      "https://cernlib.web.cern.ch/cernlib/download/${version}_source/tar/${version}_src.tar.gz"
+    ];
     sha256 = "0awla1rl96z82br7slcmg8ks1d2a7slk6dj79ywb871j2ksi3fky";
   };