From 3ede6200428d534b5ec46a9a979e4dfdaa1fadd7 Mon Sep 17 00:00:00 2001
From: Symphorien Gibol <symphorien+git@xlumurb.eu>
Date: Fri, 17 Jul 2020 16:01:33 +0200
Subject: [PATCH] camlp4: fix build with spacetime

---
 pkgs/development/tools/ocaml/camlp4/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/tools/ocaml/camlp4/default.nix b/pkgs/development/tools/ocaml/camlp4/default.nix
index ea1b39650980..73228655cca0 100644
--- a/pkgs/development/tools/ocaml/camlp4/default.nix
+++ b/pkgs/development/tools/ocaml/camlp4/default.nix
@@ -43,6 +43,11 @@ stdenv.mkDerivation rec {
   dontAddPrefix = true;
 
   preConfigure = ''
+    # increase stack space for spacetime variant of the compiler
+    # https://github.com/ocaml/ocaml/issues/7435
+    # but disallowed by darwin sandbox
+    ulimit -s unlimited || true
+
     configureFlagsArray=(
       --bindir=$out/bin
       --libdir=$out/lib/ocaml/${ocaml.version}/site-lib