ppx_deriving: init at v3.3

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

@@ -0,0 +1,28 @@
+{stdenv, buildOcaml, fetchurl,
+ cppo, ppx_tools, result, ounit}:
+
+buildOcaml rec {
+  name = "ppx_deriving";
+  version = "v3.3";
+
+  minimumSupportedOcamlVersion = "4.02";
+
+  src = fetchurl {
+    url = "https://github.com/whitequark/${name}/archive/${version}.tar.gz";
+    sha256 = "1j20c6r2v7h05a4v9m8z5m1yqgwif41yrp63mik14pf3dkrj8x3f";
+  };
+
+  hasSharedObjects = true;
+
+  buildInputs = [ cppo ounit ];
+  propagatedBuildInputs =
+    [ ppx_tools result ];
+
+  installPhase = "OCAMLPATH=$OCAMLPATH:`ocamlfind printconf destdir` make install";
+
+  meta = with stdenv.lib; {
+    description = "deriving is a library simplifying type-driven code generation on OCaml >=4.02.";
+    maintainers = [ maintainers.maurer ];
+    license = licenses.mit;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5436,6 +5436,11 @@ in
       then callPackage ../development/ocaml-modules/ppx_blob {}
       else null;
 
+    ppx_deriving =
+      if lib.versionAtLeast ocaml_version "4.02"
+      then callPackage ../development/ocaml-modules/ppx_deriving {}
+      else null;
+
     ppx_tools =
       if lib.versionAtLeast ocaml_version "4.02"
       then callPackage ../development/ocaml-modules/ppx_tools {}