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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 e94b3fc5994a..3bfb194e20a2 100644
--- a/pkgs/top-level/ocaml-packages.nix
+++ b/pkgs/top-level/ocaml-packages.nix
@@ -607,7 +607,10 @@ let
 
     ppx_fail = callPackage ../development/ocaml-modules/janestreet/ppx-fail.nix {};
 
-    ppx_fields_conv = callPackage ../development/ocaml-modules/janestreet/ppx-fields-conv.nix {};
+    ppx_fields_conv =
+      if lib.versionOlder "4.03" ocaml.version
+      then callPackage ../development/ocaml-modules/janestreet/ppx_fields_conv-113_33_00.nix {}
+      else callPackage ../development/ocaml-modules/janestreet/ppx-fields-conv.nix {};
 
     ppx_let = callPackage ../development/ocaml-modules/janestreet/ppx-let.nix {};