From 697429c98a570250600868c3efa04442c01a4eb0 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Fri, 11 Oct 2019 22:50:21 +0100
Subject: [PATCH] re2c: enable parallel building, enable tests

Parallel builds speed up building considerably.
Tests don't add much of an overhead.

Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
---
 pkgs/development/tools/parsing/re2c/default.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/development/tools/parsing/re2c/default.nix b/pkgs/development/tools/parsing/re2c/default.nix
index e48cd29b289..dddd407d0da 100644
--- a/pkgs/development/tools/parsing/re2c/default.nix
+++ b/pkgs/development/tools/parsing/re2c/default.nix
@@ -13,6 +13,9 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ autoreconfHook ];
 
+  doCheck = true;
+  enableParallelBuilding = true;
+
   preCheck = ''
     patchShebangs run_tests.sh
   '';