From b94c892137c70802a4dd3f0f21d3753c889e1185 Mon Sep 17 00:00:00 2001
From: Robin Gloster <mail@glob.in>
Date: Sat, 6 Jan 2018 17:22:14 +0100
Subject: [PATCH] jemalloc: add patch to fix aarch64 build

---
 pkgs/development/libraries/jemalloc/default.nix | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/jemalloc/default.nix b/pkgs/development/libraries/jemalloc/default.nix
index d11ec0a78236..0882431cc15b 100644
--- a/pkgs/development/libraries/jemalloc/default.nix
+++ b/pkgs/development/libraries/jemalloc/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl }:
+{ stdenv, fetchurl, fetchpatch }:
 
 stdenv.mkDerivation rec {
   name = "jemalloc-${version}";
@@ -19,6 +19,13 @@ stdenv.mkDerivation rec {
                    ++ stdenv.lib.optional stdenv.isArm "--disable-thp";
   doCheck = true;
 
+  patches = stdenv.lib.optional stdenv.isAarch64 (fetchpatch {
+    url = "https://patch-diff.githubusercontent.com/raw/jemalloc/jemalloc/pull/1035.patch";
+    sha256 = "02y0q3dp253bipxv4r954nqipbjbj92p6ww9bx5bk3d8pa81wkqq";
+  });
+
+  enableParallelBuilding = true;
+
   meta = with stdenv.lib; {
     homepage = http://jemalloc.net;
     description = "General purpose malloc(3) implementation";