From c987ed0896fb240d380dfa0143f513349aa31a3e Mon Sep 17 00:00:00 2001
From: Andrew Dunham <andrew@du.nham.ca>
Date: Sun, 23 Sep 2018 02:01:57 -0700
Subject: [PATCH] erlangR18: apply upstream patches to fix nondeterministic
 build failures (#47202)

As per the following bug report, sometimes erts/start_scripts will fail
to compile because of a Makefile ordering issue. Apply the upstream
patches to fix this.
  https://bugs.erlang.org/browse/ERL-241
---
 pkgs/development/interpreters/erlang/R18.nix | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/pkgs/development/interpreters/erlang/R18.nix b/pkgs/development/interpreters/erlang/R18.nix
index ee524feb4c6c..58b7fd71f0be 100644
--- a/pkgs/development/interpreters/erlang/R18.nix
+++ b/pkgs/development/interpreters/erlang/R18.nix
@@ -11,6 +11,16 @@ let
      sha256 = "00fx5wc88ki3z71z5q4xzi9h3whhjw1zblpn09w995ygn07m9qhm";
   };
 
+  makeOrderingPatch = fetchpatch {
+     url = "https://github.com/erlang/otp/commit/2f1a37f1011ff9d129bc35a6efa0ab937a2aa0e9.patch";
+     sha256 = "0xfa6hzxh9d7qllkyidcgh57xrrx11w65y7s1hyg52alm06l6b9n";
+  };
+
+  makeParallelInstallPatch = fetchpatch {
+     url ="https://github.com/erlang/otp/commit/de8fe86f67591dd992bae33f7451523dab36e5bd.patch";
+     sha256 = "1cj9fjhdng6yllajjm3gkk04ag9bwyb3n70hrb5nk6c292v8a45c";
+  };
+
 in mkDerivation rec {
   version = "18.3.4.8";
   sha256 = "16c0h25hh5yvkv436ks5jbd7qmxzb6ndvk64mr404347a20iib0g";
@@ -18,5 +28,7 @@ in mkDerivation rec {
   patches = [
     rmAndPwdPatch
     envAndCpPatch
+    makeOrderingPatch
+    makeParallelInstallPatch
   ];
 }