From 65fb52f21045134690bacf5d9c21086db20ab1d1 Mon Sep 17 00:00:00 2001
From: Matthew Maurer <matthew.r.maurer@gmail.com>
Date: Tue, 20 Sep 2016 15:13:19 -0400
Subject: [PATCH] js-build-tools: Fix darwin build

On darwin, js-build-tools expects an OSX style userland and stat binary.
However, under nix we use the nix version of stat, which speaks linux-style
flags.

This patch removes js-build-tools special casing so that it speaks to stat
in linux style.
---
 .../janestreet/js-build-tools-darwin.patch            | 11 +++++++++++
 .../ocaml-modules/janestreet/js-build-tools.nix       |  2 ++
 2 files changed, 13 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/janestreet/js-build-tools-darwin.patch

diff --git a/pkgs/development/ocaml-modules/janestreet/js-build-tools-darwin.patch b/pkgs/development/ocaml-modules/janestreet/js-build-tools-darwin.patch
new file mode 100644
index 00000000000..8878b4be68b
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/js-build-tools-darwin.patch
@@ -0,0 +1,11 @@
+--- a/ocamlbuild_goodies/jane_street_ocamlbuild_goodies.ml
++++ b/ocamlbuild_goodies/jane_street_ocamlbuild_goodies.ml
+@@ -65,7 +65,7 @@ let track_external_deps = function
+
+     let stat, md5sum =
+       match run_and_read "uname" |> String.trim with
+-      | "Darwin" ->
++      | "FreeBSD" | "NetBSD" ->
+         (S [A "stat"; A "-f"; A "%d:%i:%m"],
+          A "md5")
+       | _ ->
diff --git a/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix b/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
index d6e67b277ca..bf697eda800 100644
--- a/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
+++ b/pkgs/development/ocaml-modules/janestreet/js-build-tools.nix
@@ -19,6 +19,8 @@ buildOcaml rec {
   configurePhase = "./configure --prefix $prefix";
   installPhase = "opam-installer -i --prefix $prefix --libdir `ocamlfind printconf destdir` ${name}.install";
 
+  patches = [ ./js-build-tools-darwin.patch ];
+
   meta = with stdenv.lib; {
     description = "Jane Street Build Tools";
     maintainers = [ maintainers.maurer ];