From c9468acdf42611ce5a753a394796b1a0977c600b Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Mon, 10 Jul 2017 20:18:09 +0200
Subject: [PATCH] =?UTF-8?q?ocamlPackages.ocaml-migrate-parsetree:=20requir?=
 =?UTF-8?q?es=20OCaml=20=E2=89=A5=204.02?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../ocaml-modules/ocaml-migrate-parsetree/default.nix         | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
index a056cdeb1b5..46cc922917e 100644
--- a/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
+++ b/pkgs/development/ocaml-modules/ocaml-migrate-parsetree/default.nix
@@ -1,5 +1,9 @@
 { stdenv, fetchFromGitHub, ocaml, findlib, ocamlbuild, jbuilder, result }:
 
+if !stdenv.lib.versionAtLeast ocaml.version "4.02"
+then throw "ocaml-migrate-parsetree is not available for OCaml ${ocaml.version}"
+else
+
 stdenv.mkDerivation rec {
    name = "ocaml${ocaml.version}-ocaml-migrate-parsetree-${version}";
    version = "0.7";