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-rw-r--r--pkgs/top-level/ocaml-packages.nix2
1 files changed, 2 insertions, 0 deletions
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 4486049ef91..127f228bc9c 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -754,6 +754,8 @@ let
       else bin_prot_p4;
 
     core_bench =
+      if lib.versionOlder "4.03" ocaml.version
+      then janeStreet.core_bench else
       callPackage ../development/ocaml-modules/janestreet/core_bench.nix {};
 
     core_kernel =