From ba5563b5bc8ef8514a53e73e58ca5b9fd07fdfdf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Sun, 18 Feb 2018 18:41:39 +0100
Subject: [PATCH] hhvm: fix build with gcc7

---
 pkgs/development/compilers/hhvm/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/compilers/hhvm/default.nix b/pkgs/development/compilers/hhvm/default.nix
index a66b2264f073..1cb28118ccbe 100644
--- a/pkgs/development/compilers/hhvm/default.nix
+++ b/pkgs/development/compilers/hhvm/default.nix
@@ -53,6 +53,7 @@ stdenv.mkDerivation rec {
       hphp/runtime/ext/std/*.cpp \
       hphp/runtime/ext_zend_compat/php-src/main/*.cpp \
       hphp/runtime/ext_zend_compat/php-src/main/*.h
+    sed '1i#include <functional>' -i third-party/mcrouter/src/mcrouter/lib/cycles/Cycles.h
     patchShebangs .
   '';