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-rw-r--r--pkgs/development/ocaml-modules/variantslib/default.nix6
1 files changed, 5 insertions, 1 deletions
diff --git a/pkgs/development/ocaml-modules/variantslib/default.nix b/pkgs/development/ocaml-modules/variantslib/default.nix
index cb25b844606d..425383a64854 100644
--- a/pkgs/development/ocaml-modules/variantslib/default.nix
+++ b/pkgs/development/ocaml-modules/variantslib/default.nix
@@ -1,4 +1,8 @@
-{stdenv, buildOcaml, fetchurl, type_conv}:
+{ stdenv, buildOcaml, ocaml, fetchurl, type_conv }:
+
+if stdenv.lib.versionAtLeast ocaml.version "4.06"
+then throw "variantslib-109.15.03 is not available for OCaml ${ocaml.version}"
+else
 
 buildOcaml rec {
   name = "variantslib";