ocamlPackages.accessor_core: mark as broken with OCaml ≥ 4.12

pkgs/development/ocaml-modules/janestreet/0.14.nix

@@ -1,4 +1,5 @@
 { self
+, lib
 , openssl
 , zstd
 }:
@@ -40,6 +41,7 @@ with self;
     version = "0.14.1";
     hash = "1cdkv34m6czhacivpbb2sasj83fgcid6gnqk30ig9i84z8nh2gw2";
     meta.description = "Accessors for Core types, for use with the Accessor library";
+    meta.broken = lib.versionAtLeast ocaml.version "4.12";
     propagatedBuildInputs = [ accessor_base core_kernel ];
   };
 

pkgs/top-level/ocaml-packages.nix

@@ -1284,7 +1284,7 @@ let
     if lib.versionOlder "4.08" ocaml.version
     then import ../development/ocaml-modules/janestreet/0.14.nix {
       inherit self;
-      inherit (pkgs) openssl zstd;
+      inherit (pkgs) lib openssl zstd;
     }
     else if lib.versionOlder "4.07" ocaml.version
     then import ../development/ocaml-modules/janestreet/0.12.nix {