From 10fa10731e7e19724bacfd2da71a40aa3afcd15f Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Wed, 9 Jan 2019 17:07:38 +0000
Subject: [PATCH] coqPackages.category-theory: bound build parallelism

---
 pkgs/development/coq-modules/category-theory/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/coq-modules/category-theory/default.nix b/pkgs/development/coq-modules/category-theory/default.nix
index 94ed2945692..59f2295e215 100644
--- a/pkgs/development/coq-modules/category-theory/default.nix
+++ b/pkgs/development/coq-modules/category-theory/default.nix
@@ -33,7 +33,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ coq ] ++ (with coq.ocamlPackages; [ ocaml camlp5 findlib ]);
   propagatedBuildInputs = [ ssreflect equations ];
 
-  enableParallelBuilding = false;
+  buildFlags = [ "JOBS=$(NIX_BUILD_CORES)" ];
 
   installPhase = ''
     make -f Makefile.coq COQLIB=$out/lib/coq/${coq.coq-version}/ install