Add tyxml (XML library for ocaml)

pkgs/development/ocaml-modules/tyxml/default.nix

@@ -0,0 +1,30 @@
+{stdenv, fetchurl, ocaml, findlib, ocaml_oasis}:
+
+stdenv.mkDerivation {
+  name = "tyxml-3.0.0";
+
+  src = fetchurl {
+    url = http://ocsigen.org/download/tyxml-3.0.0.tar.gz;
+    sha256 = "0cvbmyg4g0lg4f23032cjlxqklisccbjgj47117wm6gva8xi7xa3";
+    };
+
+  buildInputs = [ocaml findlib ocaml_oasis];
+
+  createFindlibDestdir = true;
+
+  configurePhase = ''
+  make setup-dev.exe
+  ./setup-dev.exe -configure --prefix $out
+  '';
+
+  meta = {
+    homepage = http://ocsigen.org/tyxml/;
+    description = "Tyxml is a library that makes it almost impossible for your OCaml programs to generate wrong XML ouput, using static typing.";
+    license = "LGPL";
+    platforms = ocaml.meta.platforms;
+    maintainers = [
+      stdenv.lib.maintainers.gal_bolle
+      ];
+  };
+
+}

pkgs/top-level/all-packages.nix

@@ -3403,6 +3403,8 @@ let
 
     ounit = callPackage ../development/ocaml-modules/ounit { };
 
+    tyxml = callPackage ../development/ocaml-modules/tyxml { };
+
     ulex = callPackage ../development/ocaml-modules/ulex { };
 
     ulex08 = callPackage ../development/ocaml-modules/ulex/0.8 {