From ed7b5516016876a29a568bc37fff22b121f5769d Mon Sep 17 00:00:00 2001
From: Vincent Laporte <Vincent.Laporte@gmail.com>
Date: Thu, 2 Dec 2021 14:29:39 +0100
Subject: [PATCH] abella: use OCaml 4.12

---
 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 d5de9fcf6c8d..b32ff5491912 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -32362,7 +32362,9 @@ with pkgs;
 
   abc-verifier = callPackage ../applications/science/logic/abc {};
 
-  abella = callPackage ../applications/science/logic/abella { };
+  abella = callPackage ../applications/science/logic/abella {
+    ocamlPackages = ocaml-ng.ocamlPackages_4_12;
+  };
 
   acgtk = callPackage ../applications/science/logic/acgtk {};