From e5d0593a4289abc33505f061239b32081a710e06 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sat, 1 Apr 2017 10:53:47 +0200
Subject: [PATCH] ocamlPackages.core_extended: fix build on Linux

---
 .../development/ocaml-modules/janestreet/core-extended.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/ocaml-modules/janestreet/core-extended.nix b/pkgs/development/ocaml-modules/janestreet/core-extended.nix
index df7f6903cd2..dc84ea34337 100644
--- a/pkgs/development/ocaml-modules/janestreet/core-extended.nix
+++ b/pkgs/development/ocaml-modules/janestreet/core-extended.nix
@@ -13,6 +13,13 @@ buildOcamlJane rec {
       ppx_assert ppx_bench ppx_driver ppx_expect ppx_inline_test ppx_jane
       re2 textutils ];
 
+  patchPhase = stdenv.lib.optionalString stdenv.isLinux ''
+    patch src/extended_unix_stubs.c <<EOF
+0a1
+> #define _LINUX_QUOTA_VERSION 2
+EOF
+  '';
+
   meta = with stdenv.lib; {
     homepage = https://github.com/janestreet/core_extended;
     description = "Jane Street Capital's standard library overlay";