From 8cdb0c3cbdab5769db25098954fd0806fb6d0939 Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Tue, 21 Aug 2018 19:45:15 +0000
Subject: [PATCH] opam: use OCaml 4.05

---
 pkgs/top-level/all-packages.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 22e6e45af0a..cae82e79cef 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7113,7 +7113,9 @@ with pkgs;
 
   opaline = callPackage ../development/tools/ocaml/opaline { };
 
-  opam = callPackage ../development/tools/ocaml/opam { };
+  opam = callPackage ../development/tools/ocaml/opam {
+    inherit (ocaml-ng.ocamlPackages_4_05) ocaml;
+  };
 
   picat = callPackage ../development/compilers/picat {
     stdenv = overrideCC stdenv gcc49;