1 files changed, 3 insertions, 2 deletions
diff --git a/pkgs/development/ocaml-modules/ocplib-simplex/default.nix b/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
index 8435d1c5e51..474f69546d1 100644
--- a/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
+++ b/pkgs/development/ocaml-modules/ocplib-simplex/default.nix
@@ -15,8 +15,9 @@ stdenv.mkDerivation {
     sha256 = "09niyidrjzrj8g1qwx4wgsdf5m6cwrnzg7zsgala36jliic4di60";
   };
 
-  nativeBuildInputs = [ autoreconfHook ];
-  buildInputs = [ ocaml findlib ];
+  nativeBuildInputs = [ autoreconfHook ocaml findlib ];
+
+  strictDeps = true;
 
   installFlags = [ "LIBDIR=$(OCAMLFIND_DESTDIR)" ];