Add a derivation for deriving (ocaml instance derivation à la Haskell)

pkgs/development/ocaml-modules/ocsigen-deriving/default.nix

@@ -0,0 +1,32 @@
+{stdenv, fetchgit, ocaml, findlib, ocaml_oasis, ocaml_data_notation, ocaml_optcomp}:
+
+stdenv.mkDerivation {
+  name = "ocsigen-deriving";
+  src = fetchgit {
+    url = "git://github.com/ocsigen/deriving";
+    rev = "refs/tags/0.6.2";
+    sha256 = "2b3bf3f4972d0e6eaf075f7353ce482b776726e0cd04947a89b7156384ec0662";
+    };
+  
+  buildInputs = [ocaml findlib ocaml_oasis ocaml_data_notation ocaml_optcomp];
+
+  configurePhase = ''
+  make setup-dev.exe
+  ./setup-dev.exe -configure --prefix $out
+  '';
+
+  createFindlibDestdir = true;
+
+
+  meta =  {
+    homepage = https://github.com/ocsigen/deriving;
+    description = "Extension to OCaml for deriving functions from type declarations";
+    license = "MIT";
+    platforms = ocaml.meta.platforms;
+    maintainers = [
+      stdenv.lib.maintainers.gal_bolle
+    ];
+  };
+
+
+}

pkgs/top-level/all-packages.nix

@@ -3441,6 +3441,8 @@ let
 
     zed = callPackage ../development/ocaml-modules/zed { };
 
+    ocsigen_deriving = callPackage ../development/ocaml-modules/ocsigen-deriving { };
+
   };
 
   ocamlPackages = recurseIntoAttrs ocamlPackages_4_01_0;