diff --git a/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix b/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix
new file mode 100644
index 00000000000..33397e35aa6
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/buildOcamlJane.nix
@@ -0,0 +1,30 @@
+{ buildOcaml, opam, js_build_tools, ocaml_oasis, fetchurl } :
+
+{ name, version ? "113.33.03", buildInputs ? [],
+  hash ? "",
+  minimumSupportedOcamlVersion ? "4.02", ...
+}@args:
+
+buildOcaml (args // {
+  inherit name version minimumSupportedOcamlVersion;
+  src = fetchurl {
+    url = "https://github.com/janestreet/${name}/archive/${version}.tar.gz";
+    sha256 = hash;
+  };
+
+  hasSharedObjects = true;
+
+  buildInputs = [ ocaml_oasis js_build_tools opam ] ++ buildInputs;
+
+  dontAddPrefix = true;
+
+  configurePhase = "./configure --prefix $out";
+
+  buildPhase = "OCAML_TOPLEVEL_PATH=`ocamlfind query findlib`/.. make";
+
+  installPhase = ''
+    opam-installer -i --prefix $prefix --libdir `ocamlfind printconf destdir` --stubsdir `ocamlfind printconf destdir`/${name} ${name}.install
+    if [ -d $out/lib/${name} ]; then if [ "$(ls -A $out/lib/${name})" ]; then mv $out/lib/${name}/* `ocamlfind printconf destdir`/${name}; fi; rmdir $out/lib/${name}; fi
+  '';
+
+})
diff --git a/pkgs/development/ocaml-modules/janestreet/ppx-core.nix b/pkgs/development/ocaml-modules/janestreet/ppx-core.nix
new file mode 100644
index 00000000000..4f5bb87b767
--- /dev/null
+++ b/pkgs/development/ocaml-modules/janestreet/ppx-core.nix
@@ -0,0 +1,14 @@
+{stdenv, buildOcamlJane, ppx_tools}:
+
+buildOcamlJane rec {
+  name = "ppx_core";
+  hash = "0df7vyai488lfkyh8szw2hvn22jsyrkfvq1b91j1s0g0y27nnfax";
+  propagatedBuildInputs =
+    [ ppx_tools ];
+
+  meta = with stdenv.lib; {
+    description = "PPX standard library";
+    maintainers = [ maintainers.maurer ];
+    license = licenses.asl20;
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 63642673465..a12f6c8740f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5504,6 +5504,11 @@ in
 
     # Jane Street
     js_build_tools = callPackage ../development/ocaml-modules/janestreet/js-build-tools.nix {};
+
+    buildOcamlJane = callPackage ../development/ocaml-modules/janestreet/buildOcamlJane.nix {};
+
+    ppx_core = callPackage ../development/ocaml-modules/janestreet/ppx-core.nix {};
+
   };
 
   ocamlPackages = recurseIntoAttrs ocamlPackages_4_01_0;