From 9d526675368dd51134151b6cc3fd0e94a5b5c2bc Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Sat, 8 Jul 2017 11:31:11 +0200
Subject: [PATCH] =?UTF-8?q?ocamlPackages.qtest:=20requires=20OCaml=20?=
 =?UTF-8?q?=E2=89=A5=204?=
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---
 pkgs/development/ocaml-modules/qtest/default.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/development/ocaml-modules/qtest/default.nix b/pkgs/development/ocaml-modules/qtest/default.nix
index 6d5f8ecc683..4d3ab0ddb4f 100644
--- a/pkgs/development/ocaml-modules/qtest/default.nix
+++ b/pkgs/development/ocaml-modules/qtest/default.nix
@@ -1,5 +1,9 @@
 { stdenv, fetchzip, ocaml, findlib, ocamlbuild, ounit }:
 
+if !stdenv.lib.versionAtLeast ocaml.version "4"
+then throw "qtest is not available for OCaml ${ocaml.version}"
+else
+
 let version = "2.2"; in
 
 stdenv.mkDerivation {