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-rw-r--r--pkgs/top-level/ocaml-packages.nix5
1 files changed, 4 insertions, 1 deletions
diff --git a/pkgs/top-level/ocaml-packages.nix b/pkgs/top-level/ocaml-packages.nix
index 3bfb194e20a2..d393233181d2 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -622,7 +622,10 @@ let
 
     ppx_typerep_conv = callPackage ../development/ocaml-modules/janestreet/ppx-typerep-conv.nix {};
 
-    ppx_variants_conv = callPackage ../development/ocaml-modules/janestreet/ppx-variants-conv.nix {};
+    ppx_variants_conv =
+      if lib.versionOlder "4.03" ocaml.version
+      then callPackage ../development/ocaml-modules/janestreet/ppx_variants_conv-113_33_00.nix {}
+      else callPackage ../development/ocaml-modules/janestreet/ppx-variants-conv.nix {};
 
     ppx_expect = callPackage ../development/ocaml-modules/janestreet/ppx-expect.nix {};