1 files changed, 3 insertions, 2 deletions
diff --git a/nixpkgs/pkgs/development/ocaml-modules/functory/default.nix b/nixpkgs/pkgs/development/ocaml-modules/functory/default.nix
index 3c56aaf0a0ad..8a960dedcb5c 100644
--- a/nixpkgs/pkgs/development/ocaml-modules/functory/default.nix
+++ b/nixpkgs/pkgs/development/ocaml-modules/functory/default.nix
@@ -1,7 +1,5 @@
 { lib, stdenv, fetchurl, ocaml, findlib }:
 
-assert lib.versionAtLeast (lib.getVersion ocaml) "3.11";
-
 let param =
   if lib.versionAtLeast ocaml.version "4.02" then {
     version = "0.6";
@@ -12,6 +10,9 @@ let param =
   };
 in
 
+lib.throwIf (lib.versionAtLeast ocaml.version "5.0")
+  "functory is not available for OCaml ${ocaml.version}"
+
 stdenv.mkDerivation {
   pname = "ocaml${ocaml.version}-functory";
   inherit (param) version;