diff --git a/pkgs/development/tools/ocaml/opam/0.9.4.nix b/pkgs/development/tools/ocaml/opam/0.9.4.nix
new file mode 100644
index 000000000000..c69d4d836261
--- /dev/null
+++ b/pkgs/development/tools/ocaml/opam/0.9.4.nix
@@ -0,0 +1,59 @@
+{ stdenv, fetchgit, fetchurl, ocaml, unzip, ncurses, curl }:
+
+let
+  srcs = {
+    cudf = fetchurl {
+      url = "https://gforge.inria.fr/frs/download.php/31910/cudf-0.6.3.tar.gz";
+      sha256 = "6e9f1bafe859df85c854679e2904a8172945d2bf2d676c8ae3ecb72fe6de0665";
+    };
+    extlib = fetchurl {
+      url = "http://ocaml-extlib.googlecode.com/files/extlib-1.5.3.tar.gz";
+      sha256 = "c095eef4202a8614ff1474d4c08c50c32d6ca82d1015387785cf03d5913ec021";
+    };
+    ocaml_re = fetchurl {
+      url = "https://github.com/ocaml/ocaml-re/archive/ocaml-re-1.2.0.tar.gz";
+      sha256 = "a34dd9d6136731436a963bbab5c4bbb16e5d4e21b3b851d34887a3dec451999f";
+    };
+    ocamlgraph = fetchurl {
+      url = "http://ocamlgraph.lri.fr/download/ocamlgraph-1.8.1.tar.gz";
+      sha256 = "ba6388ffc2c15139b0f26330ef6dd922f0ff0f364eee99a3202bf1cd93512b43";
+    };
+    dose3 = fetchurl {
+      url = "https://gforge.inria.fr/frs/download.php/31595/dose3-3.1.2.tar.gz";
+      sha256 = "3a07a08345be157c98cb26021d7329c72c2b95c99cfdff79887690656ec9f1a3";
+    };
+    cmdliner = fetchurl {
+      url = "http://erratique.ch/software/cmdliner/releases/cmdliner-0.9.3.tbz";
+      sha256 = "5421559aa12b4debffef947f7e1039c22e9dffd87a4aa68445a687a20764ae81";
+    };
+    opam = fetchurl {
+      url = "https://github.com/OCamlPro/opam/archive/0.9.4.zip";
+      sha256 = "6d86e9a64d1a1217cd81fc65ec5c41d1c1e0ff888237d819a0b17a4d3096c316";
+    };
+  };
+in
+stdenv.mkDerivation rec {
+  name = "opam-0.9.4";
+
+  buildInputs = [unzip curl ncurses ocaml];
+
+  src = srcs.opam;
+
+  postUnpack = ''
+  ln -sv ${srcs.cudf} $sourceRoot/src_ext/${srcs.cudf.name}
+  ln -sv ${srcs.extlib} $sourceRoot/src_ext/${srcs.extlib.name}
+  ln -sv ${srcs.ocaml_re} $sourceRoot/src_ext/${srcs.ocaml_re.name}
+  ln -sv ${srcs.ocamlgraph} $sourceRoot/src_ext/${srcs.ocamlgraph.name}
+  ln -sv ${srcs.dose3} $sourceRoot/src_ext/${srcs.dose3.name}
+  ln -sv ${srcs.cmdliner} $sourceRoot/src_ext/${srcs.cmdliner.name}
+  '';
+
+  makeFlags = ["HOME=$(TMPDIR)"];
+
+  doCheck = false;
+
+  meta = {
+    description = "A package manager for ocaml";
+    platforms = stdenv.lib.platforms.all;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4bb08128798d..00ecacc12451 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2624,6 +2624,8 @@ let
     ocaml_extlib = callPackage ../development/ocaml-modules/extlib { };
 
     pycaml = callPackage ../development/ocaml-modules/pycaml { };
+
+    opam = callPackage ../development/tools/ocaml/opam/0.9.4.nix { };
   };
 
   ocamlPackages = recurseIntoAttrs ocamlPackages_3_12_1;