From 75120e6bbb38566f108eb4b83a9f77936b015933 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fran=C3=A7ois=20Bobot?= <francois.bobot@cea.fr>
Date: Sat, 9 May 2020 00:50:32 +0200
Subject: [PATCH] Downgrade alt-ergo to 2.2.0

because 2.3.0 can't be configured without opam
---
 nix/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nix/default.nix b/nix/default.nix
index c212c758009..8de62f24877 100644
--- a/nix/default.nix
+++ b/nix/default.nix
@@ -153,7 +153,7 @@ rec {
   wp-qualif = stdenv.mkDerivation {
         name = "frama-c-wp-qualif";
         buildInputs = mk_buildInputs { opamPackages = [
-                    { name = "alt-ergo"; constraint = "=2.3.0"; }
+                    { name = "alt-ergo"; constraint = "=2.2.0"; }
                ]; };
         build_dir = main.build_dir;
         src = main.build_dir + "/dir.tar";
-- 
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