From c5f0dbb660fc30adcd2f804f3257b57dac063649 Mon Sep 17 00:00:00 2001
From: Ingolf Wagner <contact@ingolf-wagner.de>
Date: Thu, 24 Jan 2019 18:30:35 +0100
Subject: [PATCH] rustc: mark compileprocess as timeconsuming

---
 pkgs/development/compilers/rust/rustc.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/development/compilers/rust/rustc.nix b/pkgs/development/compilers/rust/rustc.nix
index 3ec08a82d017..1c82e71dd1dc 100644
--- a/pkgs/development/compilers/rust/rustc.nix
+++ b/pkgs/development/compilers/rust/rustc.nix
@@ -166,6 +166,8 @@ stdenv.mkDerivation {
   # https://github.com/rust-lang/rust/issues/30181
   # enableParallelBuilding = false;
 
+  requiredSystemFeatures = [ "big-parallel" ];
+
   meta = with stdenv.lib; {
     homepage = https://www.rust-lang.org/;
     description = "A safe, concurrent, practical language";