From f0c328e4a4392f5b5798471dc131605880169bdb Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Sat, 1 May 2021 12:33:44 -0400
Subject: [PATCH] fastnlo_toolkit: add a backup url for src

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

diff --git a/pkgs/development/libraries/physics/fastnlo_toolkit/default.nix b/pkgs/development/libraries/physics/fastnlo_toolkit/default.nix
index e01638e285b..d6cbe7cc4dd 100644
--- a/pkgs/development/libraries/physics/fastnlo_toolkit/default.nix
+++ b/pkgs/development/libraries/physics/fastnlo_toolkit/default.nix
@@ -18,7 +18,10 @@ stdenv.mkDerivation rec {
   version = "2.3.1pre-2411";
 
   src = fetchurl {
-    url = "https://fastnlo.hepforge.org/code/v23/${pname}-${version}.tar.gz";
+    urls = [
+      "https://fastnlo.hepforge.org/code/v23/${pname}-${version}.tar.gz"
+      "https://sid.ethz.ch/debian/fastnlo/${pname}-${version}.tar.gz"
+    ];
     sha256 = "0fm9k732pmi3prbicj2yaq815nmcjll95fagjqzf542ng3swpqnb";
   };