From e1d0c9ae2051f3d121160c1dd68e4696c03fa2e1 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Sat, 14 Jan 2017 17:38:46 +0100
Subject: [PATCH] rustc: disable parallel building because of
 https://github.com/rust-lang/rust/issues/30181

https://github.com/NixOS/nixpkgs/pull/21742
---
 pkgs/development/compilers/rust/rustc.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index 190bb1a69fda..056177fd265f 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -142,7 +142,9 @@ stdenv.mkDerivation {
   doCheck = true;
   dontSetConfigureCross = true;
 
-  enableParallelBuilding = true;
+  # https://github.com/NixOS/nixpkgs/pull/21742#issuecomment-272305764
+  # https://github.com/rust-lang/rust/issues/30181
+  # enableParallelBuilding = false;
 
   meta = with stdenv.lib; {
     homepage = http://www.rust-lang.org/;