pkgsStatic.ocaml-ng: migrate more logic to derivations

pkgs/development/tools/ocaml/dune/1.nix

@@ -1,4 +1,4 @@
-{ stdenv, lib, fetchurl, ocaml, findlib }:
+{ stdenv, lib, fetchurl, ocaml, findlib, ncurses }:
 
 if !lib.versionAtLeast ocaml.version "4.02"
 || lib.versionAtLeast ocaml.version "4.12"
@@ -14,6 +14,7 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [ ocaml findlib ];
+  buildInputs = [ ncurses ];
   strictDeps = true;
 
   buildFlags = [ "release" ];

pkgs/top-level/static.nix

@@ -51,8 +51,6 @@ self: super: let
     b.overrideAttrs (o: {
       configurePlatforms = [ ];
       dontAddStaticConfigureFlags = true;
-      buildInputs = (o.buildInputs or [ ]) ++ o.nativeBuildInputs or [ ];
-      propagatedNativeBuildInputs = o.propagatedBuildInputs or [ ];
     });
 
   ocamlStaticAdapter = _: super: