From cf39dba1d8293c9ba005456fb2e35c3e61c7e8f4 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sun, 26 Feb 2017 14:10:02 +0000
Subject: [PATCH] ocamlPackages.ppx_fail: init at 113.33.00+4.03

---
 .../janestreet/ppx_fail-113_33_00.nix         | 21 +++++++++++++++++++
 pkgs/top-level/ocaml-packages.nix             |  5 ++++-
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 pkgs/development/ocaml-modules/janestreet/ppx_fail-113_33_00.nix

diff --git a/pkgs/development/ocaml-modules/janestreet/ppx_fail-113_33_00.nix b/pkgs/development/ocaml-modules/janestreet/ppx_fail-113_33_00.nix
new file mode 100644
index 000000000000..ba098b9294f6
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/ppx_fail-113_33_00.nix
@@ -0,0 +1,21 @@
+{ stdenv, fetchurl, ocaml, findlib, ocamlbuild, opam, topkg
+, ppx_tools, ppx_here
+}:
+
+stdenv.mkDerivation {
+  name = "ocaml${ocaml.version}-ppx_fail-113.33.00+4.03";
+  src = fetchurl {
+    url = http://ocaml.janestreet.com/ocaml-core/113.33/files/ppx_fail-113.33.00+4.03.tar.gz;
+    sha256 = "1fy1aqsylf6yk527w13rm2b20il9vy026c5ww65pj3ks5zykfvx9";
+  };
+
+  buildInputs = [ ocaml findlib ocamlbuild opam ppx_tools ];
+  propagatedBuildInputs = [ ppx_here ];
+
+  inherit (topkg) installPhase;
+
+  meta = {
+    license = stdenv.lib.licenses.asl20;
+    inherit (ocaml.meta) platforms;
+  };
+}
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 2dff5031f6f7..8cf09dc6ad34 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -605,7 +605,10 @@ let
       then callPackage ../development/ocaml-modules/janestreet/ppx_enumerate-113_33_00.nix {}
       else callPackage ../development/ocaml-modules/janestreet/ppx-enumerate.nix {};
 
-    ppx_fail = callPackage ../development/ocaml-modules/janestreet/ppx-fail.nix {};
+    ppx_fail =
+      if lib.versionOlder "4.03" ocaml.version
+      then callPackage ../development/ocaml-modules/janestreet/ppx_fail-113_33_00.nix {}
+      else callPackage ../development/ocaml-modules/janestreet/ppx-fail.nix {};
 
     ppx_fields_conv =
       if lib.versionOlder "4.03" ocaml.version