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-rw-r--r--pkgs/development/ocaml-modules/kafka/lwt.nix7
1 files changed, 6 insertions, 1 deletions
diff --git a/pkgs/development/ocaml-modules/kafka/lwt.nix b/pkgs/development/ocaml-modules/kafka/lwt.nix
index a6cef66b276..da931d6e8bf 100644
--- a/pkgs/development/ocaml-modules/kafka/lwt.nix
+++ b/pkgs/development/ocaml-modules/kafka/lwt.nix
@@ -1,13 +1,18 @@
 { buildDunePackage
+, ocaml
+, lib
 , kafka
 , lwt
 , cmdliner
 }:
 
+lib.throwIf (lib.versionAtLeast ocaml.version "5.0")
+  "kafka_lwt is not available for OCaml ${ocaml.version}"
+
 buildDunePackage rec {
   pname = "kafka_lwt";
 
-  inherit (kafka) version useDune2 src;
+  inherit (kafka) version src;
 
   buildInputs = [ cmdliner ];