ocamlPackages.camomile: fix build for OCaml 4.05

pkgs/development/ocaml-modules/camomile/0.8.2.nix

@@ -1,5 +1,9 @@
 {stdenv, fetchurl, ocaml, findlib, camlp4}:
 
+if stdenv.lib.versionAtLeast ocaml.version "4.05"
+then throw "camomile-0.8.2 is not available for OCaml ${ocaml.version}"
+else
+
 stdenv.mkDerivation rec {
   name = "camomile-${version}";
   version = "0.8.2";

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

@@ -1,4 +1,4 @@
-{stdenv, fetchurl, ocaml, findlib, camlp4}:
+{stdenv, fetchurl, fetchpatch, ocaml, findlib, camlp4}:
 
 stdenv.mkDerivation rec {
   name = "camomile-${version}";
@@ -9,6 +9,11 @@ stdenv.mkDerivation rec {
     sha256 = "003ikpvpaliy5hblhckfmln34zqz0mk3y2m1fqvbjngh3h2np045";
   };
 
+  patches = [ (fetchpatch {
+    url = https://raw.githubusercontent.com/ocaml/opam-repository/master/packages/camomile/camomile.0.8.5/files/4.05-typing-fix.patch;
+    sha256 = "167279lia6qx62mdcyc5rjsi4gf4yi52wn9mhgd9y1v3754z7fwb";
+  })];
+
   buildInputs = [ocaml findlib camlp4];
 
   createFindlibDestdir = true;