From 88cfc7f87be468afaa5403e5a8a2a3f4eeed81b2 Mon Sep 17 00:00:00 2001
From: Mauricio Collares <mauricio@collares.org>
Date: Wed, 2 Dec 2020 16:44:10 -0300
Subject: [PATCH] ppl: fetch clang patch from alternate location (that doesn't
 require auth)

---
 pkgs/development/libraries/ppl/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/ppl/default.nix b/pkgs/development/libraries/ppl/default.nix
index a51db09db860..f1c93e0fa7c7 100644
--- a/pkgs/development/libraries/ppl/default.nix
+++ b/pkgs/development/libraries/ppl/default.nix
@@ -12,8 +12,8 @@ stdenv.mkDerivation {
   };
 
   patches = [(fetchpatch {
-    name = "ppl.patch";
-    url = "http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=patch;h=c39f6a07b51f89e365b05ba4147aa2aa448febd7";
+    name = "clang5-support.patch";
+    url = "https://git.sagemath.org/sage.git/plain/build/pkgs/ppl/patches/clang5-support.patch?h=9.2";
     sha256 = "1zj90hm25pkgvk4jlkfzh18ak9b98217gbidl3731fdccbw6hr87";
   })];