From 26b4e2a286efab1bca53a84602a25619c6dffc5f Mon Sep 17 00:00:00 2001
From: Arie Middelkoop <amiddelk@gmail.com>
Date: Mon, 30 Jul 2012 20:12:06 +0200
Subject: [PATCH] compatibility fix of ocaml-extlib for ocaml 4.00.0.

---
 pkgs/development/ocaml-modules/extlib/default.nix    |  1 +
 .../extlib/hashtable-ocaml4-compat.patch             | 12 ++++++++++++
 2 files changed, 13 insertions(+)
 create mode 100644 pkgs/development/ocaml-modules/extlib/hashtable-ocaml4-compat.patch

diff --git a/pkgs/development/ocaml-modules/extlib/default.nix b/pkgs/development/ocaml-modules/extlib/default.nix
index 55e1c8418305..a520f8196d8a 100644
--- a/pkgs/development/ocaml-modules/extlib/default.nix
+++ b/pkgs/development/ocaml-modules/extlib/default.nix
@@ -8,6 +8,7 @@ stdenv.mkDerivation {
     sha256 = "ca6d69adeba4242ce41c02a23746ba1e464c0bbec66e2d16b02c3c6e85dc10aa";
   };
 
+  patches = [ ./hashtable-ocaml4-compat.patch ];
   buildInputs = [ocaml findlib];
 
   createFindlibDestdir = true;
diff --git a/pkgs/development/ocaml-modules/extlib/hashtable-ocaml4-compat.patch b/pkgs/development/ocaml-modules/extlib/hashtable-ocaml4-compat.patch
new file mode 100644
index 000000000000..c587f2b6cd3b
--- /dev/null
+++ b/pkgs/development/ocaml-modules/extlib/hashtable-ocaml4-compat.patch
@@ -0,0 +1,12 @@
+Revision 396 from the official extlib repository.
+
+--- extlib/extHashtbl.ml	(revision 395)
++++ extlib/extHashtbl.ml	(working copy)
+@@ -32,6 +32,7 @@
+ 	}
+ 
+ 	include Hashtbl
++	let create n = Hashtbl.create (* no seed *) n
+ 
+ 	external h_conv : ('a, 'b) t -> ('a, 'b) h_t = "%identity"
+ 	external h_make : ('a, 'b) h_t -> ('a, 'b) t = "%identity"
\ No newline at end of file