From e63e4c11cc25b2bd8f67eec138eb7f19f87695fe Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Tue, 21 Aug 2018 19:20:23 +0000
Subject: [PATCH] =?UTF-8?q?ocamlPackages.mezzo:=20disable=20for=20OCaml=20?=
 =?UTF-8?q?=E2=89=A5=204.06?=
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---
 pkgs/development/compilers/mezzo/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/compilers/mezzo/default.nix b/pkgs/development/compilers/mezzo/default.nix
index 79dc479fae8..c0b53574713 100644
--- a/pkgs/development/compilers/mezzo/default.nix
+++ b/pkgs/development/compilers/mezzo/default.nix
@@ -1,5 +1,9 @@
 { stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, menhir, yojson, ulex, pprint, fix, functory }:
 
+if stdenv.lib.versionAtLeast ocaml.version "4.06"
+then throw "mezzo is not available for OCaml ${ocaml.version}"
+else
+
 let
   check-ocaml-version = with stdenv.lib; versionAtLeast (getVersion ocaml);
 in