From c2b86bc5bbde88b94f658a56f69bf92460251616 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Tue, 21 Aug 2018 13:20:43 +0000
Subject: [PATCH] =?UTF-8?q?ocamlPackages.fieldslib=5Fp4:=20disable=20for?=
 =?UTF-8?q?=20OCaml=20=E2=89=A5=204.06?=
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---
 pkgs/development/ocaml-modules/fieldslib/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/ocaml-modules/fieldslib/default.nix b/pkgs/development/ocaml-modules/fieldslib/default.nix
index 6a8db9e6281..36c1342e61f 100644
--- a/pkgs/development/ocaml-modules/fieldslib/default.nix
+++ b/pkgs/development/ocaml-modules/fieldslib/default.nix
@@ -2,6 +2,10 @@
 
 assert stdenv.lib.versionOlder "4.00" (stdenv.lib.getVersion ocaml);
 
+if stdenv.lib.versionAtLeast ocaml.version "4.06"
+then throw "fieldslib-109.20.03 is not available for OCaml ${ocaml.version}"
+else
+
 stdenv.mkDerivation {
   name = "ocaml-fieldslib-109.20.03";